User manual CANON CANOSCAN N656U

for Macintosh Canon Plug-in Module CS-U 3.8 for CanoScan N650U/N656U/N1220U Color Image Scanner User's Guide How to Make Best Use of the Manuals When you open the box Printed Manual CanoScan N650U/N656U/N1220U Getting Started Describes operating procedure from set up and software installation to scanning and confirmation of operation. Please read before using the scanner for the first time. After reading this guide and scanner is set up and ready for use... Electronic Manual Canon Plug-in Module CS-U User's Guide Detailed information on how to use Canon Plug-in Module CS-U. T G his uid e Electronic Manual CanoScan Toolbox CS User's Guide Detailed information on how to use CanoScan Toolbox CS. After you have read this book and mastered the use of Canon Plug-in Module CS-U and CanoScan Toolbox CS... Electronic Manuals Manual for Each Application Software Tells you how to use ArcSoft PhotoStudio 2000, ArcSoft PhotoBase and Caere Omni Page SE. When using the accompanying application software. 2 How to Use this Guide This guide explains the operating procedures for Canon Plug-in Module CS-U (hereafter referred to as Plug-in Module CS-U), the Macintosh driver (plug-in software) used with Canon image scanners. A plug-in is not an independent software program; it must be used within a plug-in compliant application, such as CanoScan Toolbox CS or ArcSoft PhotoStudio 2000, to expand the capabilities of that program. Adding scanning capabilities to your computer is as easy as putting in a plug. Simply copy the Plug-in Module CS-U files to your computer. Please read this guide to perform the installation procedures and scan. Store this manual in a handy location for future reference. Where to Look Quick Start Instructions p. 10 p. 13 The Quick Start Instructions provide a brief summary of commands and procedures that will assist in using Plug-in Module CS-U immediately. Scanning Preparations (Required Reading) All users should read this section. This section describes the procedures and settings required before scanning, including positioning the original and selecting the output device, resolution, magnification and scanning mode. Scanning (Required Reading) Adjusting Scanned Images Appendices p. 29 p. 35 All users should read this section to learn the procedures for scanning and saving images. Read this section for details about how to adjust image brightness, color balance and other attributes. You can read this section as required. Read this section for troubleshooting tips, glossary terms and the index. About the Conventions Used in this Guide The following conventions are used in this guide to draw your attention to important information. Caution: This symbol is used to highlight procedural precautions and limitations. Always read these topics to avoid errors. Hint: This symbol is used to present helpful hints and supplemental information. Reading these topics is recommended to enhance your enjoyment of Plug-in Module CS-U. 3 Table of Contents How to Make Best Use of the Manuals .................................................................. 2 How to Use this Guide ........................................................................................... 3 Table of Contents ................................................................................................... 4 Installing Plug-in Module CS-U ............................................................................... 6 Control Panel Features ........................................................................................... 7 Scanning Procedures .............................................................................................. 8 Plug-in Module CS-U Special Features .................................................................... 9 Quick Start Instructions ............................................................................ 10 STEP 1 Scanning Preparations ................................................................. 13 Displaying the Plug-in Module CS-U Control Panel .............................................. 14 Positioning Originals ............................................................................................ 16 Previewing ........................................................................................................... 17 Selecting the Output Device ................................................................................. 18 Setting the Resolution and Magnification ............................................................ 19 Setting the Scan Mode ........................................................................................ 21 Verifying the Image before Scanning ....................................................................23 Rotating the Image .............................................................................................. 24 Setting Preferences .............................................................................................. 25 Output Device ................................................................................................. 25 Aspect Ratio ................................................................................................... 25 Unit ................................................................................................................ 26 Preview Window ............................................................................................. 26 Calibration ...................................................................................................... 27 Reset Default Settings ..................................................................................... 27 Close Plug-in After Scan ................................................................................. 27 STEP 2 Scanning ....................................................................................... 29 Setting the Scan Area .......................................................................................... 30 Zooming .............................................................................................................. 31 Scanning .............................................................................................................. 33 Saving Scanned Images ........................................................................................ 34 4 STEP 3 Adjusting Scanned Images .......................................................... 35 Tone Adjustment .................................................................................................. 36 Histogram Settings ............................................................................................... 37 Tone Curve Settings ............................................................................................. 40 Brightness and Contrast Settings .........................................................................43 Adjusting the Color Balance ................................................................................. 45 Gamma Value Settings ......................................................................................... 46 Adjusting the Threshold Value ............................................................................. 48 Auto Tone Correction ........................................................................................... 49 Unsharp Mask ...................................................................................................... 50 Descreen .............................................................................................................. 51 Saving/Recalling Settings ...................................................................................... 52 Scanning Techniques ............................................................................................ 54 Appendices ................................................................................................ 55 Troubleshooting ................................................................................................... 56 Error Messages .................................................................................................... 58 Glossary ............................................................................................................... 59 Index .................................................................................................................... 64 Canon Customer Support Help Desk ...................................................................66 5 Installing Plug-in Module CS-U Please install Plug-in Module CS-U with the other application programs according to the instructions in the "1. Installing the Software" section of "Chapter 3, Using the Macintosh Platform," of the Getting Started guide supplied with the scanner. Operating Environment Hardware · Power Macintosh or iMac with built-in USB ports (performance on Macintosh compatibles is not guaranteed) Main Memory · 32 MB or more (64 MB or more recommended) Application Software · CanoScan Toolbox CS · ArcSoft PhotoStudio 2000 · Other plug-in compatible application programs Display · 256 colors or more (32,000 colors or more recommended; black & white or 4-tone monochrome monitors are not supported) System Software · Mac OS 8.5 or higher (First-generation, Bondi blue iMacs may require a system upgrade and an update to the system and firmware.*) * For information about upgrades and updating for iMacs, refer to the Troubleshooting menu on the CanoScan Setup Utility CD-ROM. Look for the "Scanner won't work on an iMac" item in the topic entitled "Problems with the Scanner." Caution · The ColorSyncTM Profiles file is installed along with Plug-in Module CS-U. ColorSyncTM Ver. 2.0 or higher is required to use these profiles with the automatic color matching system (p. 49). · The following display profile files are available: CANON gamma 1.5 monitor, CANON gamma 1.8 monitor and CANON gamma 2.1 monitor. If you wish to adjust the color balance of the display, double-click [ColorSyncTM] in your Macintosh's Control Panels folder and select one of these display profiles. 6 Control Panel Features When you need more information about a control panel button or menu, refer to the illustration below and go to the referenced page number for more details. · The illustration may differ slightly from the version of Plug-in Module CS-U provided in your package. § p. 49 § p. 36-48 § p. 51 § p. 50 § pp. 25-28 § p. 52 RGB values § p. 14 Close Box § p. 14 Scan Mode § p. 21 Output Device § p. 18 Resolution § pp. 19-20 Magnification § pp. 19-20 Image Size § pp. 19-20 Required/ Free memory § p. 21 Zoom In Button § p. 31 Zoom Out Button § p. 32 Tone Adjustment Button § pp. 36-48 Auto Tone Adjustment Button § p. 36 Preview Window § pp. 14, 26 Scan Button § p. 33 Preview Button § p. 17 Rotation Button § p. 24 Browser Button § p. 23 Hint In this guide, menu items are marked in the following manner: Select [Load] from the [Setting File] menu. 7 Scanning Procedures Follow these procedures to use Plug-in Module CS-U. Is Plug-in Module CS-U installed? Refer to the scanner's Getting Started guide to install it. Is the scanner attached? Refer to the scanner's Getting Started guide to attach it. STEP 1 Prepare for Scanning § p. 13 p. 16 p. 17 · Select the Output Device p. 18 · Set the Resolution and Magnification p. 19 · Set the Scan Mode p. 21 · Position the Original · Preview Verify the Image before Scanning (Browser Window) § p. 23 STEP · Histogram · Tone Curve 3 p. 37 p. 40 p. 43 p. 45 p. 46 p. 48 p. 49 p. 50 p. 51 Adjust and Edit Scanned Images § p. 35 Are the Brightness and Color Satisfactory? STEP Scan § p. 29 2 p. 30 p. 31 p. 33 p. 34 · Brightness and Contrast · Color Balance · Gamma Value Threshold Value · · Auto Tone (ColorSync ) · Unsharp Mask · Descreen TM · Set the Scan Area · Zoom · Scan · Save Scanned Images If the current brightness and color pose no problem, there is no need to adjust these settings. 8 Plug-in Module CS-U Special Features · See the Results of Adjustments Immediately (Dynamic Preview) Once in preview mode, the results of adjustments to scan mode settings and colors are promptly reflected in the preview image. Highly detailed adjustments can be performed easily because you can see the results of your changes as they are executed. · ColorSyncTM (Ver 2.0 +) Compatible for Auto Tone Correction Compatible with the Mac OS 8.5 ColorSyncTM (Ver 2.0 +) color management software. This function automatically matches the color profiles of various devices, such as scanners, color displays and color printers, for optimal color reproduction. · Browser Function Permits Confirmation of the Real Image Before Scanning The Browser function lets you check the image to be scanned in detail before commencing the scan. This function presents a much higher quality image than the preview function. · Histogram Function Realizes Beautiful Contrast Simple operation allows you to achieve beautiful contrast with half-tone gradations. · Gamma Curve Adjusts Image Brightness The Gamma Curve feature provides four methods you can use to refine in detail the level of image brightness until you are satisfied with the results. · Works within Image Processing Software for Easy Image Editing Plug-in Module CS-U can be used to extend the functions of plug-in compatible image processing application programs. 9 Quick Start Instructions Folow the procedures below to start scanning immediately. If you require more information at any stage, read the pages referenced at each step. 1 Install Plug-in Module CS-U This step is not required if you have already installed Plug-in Module CS-U following the instructions in the Getting Started guide. 1. Place the CanoScan Setup Utility CD-ROM into the computer's CD-ROM drive. The CanoScan Setup Utility will start automatically. (If it doesn't, double click the [CD-ROM] icon, followed by the [setup] icon.) 2. Click [Install the Software] to install Plug-in Module CS-U and the other application programs. 2 3 Start Plug-in Module CS-U p. 14 1. Start ArcSoft PhotoStudio 2000 or other plug-in compatible application. 2. Open the [File] menu, select [Acquire] and [CanonPI CS-U 3.8.0...]. Position materials for scanning and preview them. p. 16 1. Position an item on the document glass (platen). 2. Click the Preview button. · The entire scanable area of the document glass will be previewed and displayed in the preview window. 10 4 Set the Scan Mode, Output Device, Resolution and Magnification pp. 18-22 · Scanning mode determines how the image is scanned (p. 21). · Output device setting optimizes the images for particular uses (p. 18). · Resolution determines the amount of detail in the scanned image (p. 19). · Magnification determines the amount of enlargement or reduction of the output image display (p. 19). 5 Verify Image Quality with the Browser Function before Scanning p. 23 1. Click on the [Browser] button. · The selection frame will appear. Selection Frame The selection frame moves with the mouse pointer. 2. Move the selection frame to specify the area of the image you want verified and click the mouse button. · Plug-in Module CS-U will read the image and display the browser image. 3. After you have examined the browser image, click the mouse anywhere. ª 6 Specify the Area of the Image to be Scanned p. 30 Select the area to be scanned by clicking and dragging the mouse pointer over the image. · You may find it convenient to use the zoom feature to select small areas or to select specific scan areas with precision (p. 31). 11 7 Scan the Image p. 33 Click on the [Scan] button. · Plug-in Module CS-U will scan the image. ª · When the scan is complete, the Plug-in Module CS-U control panel will close and the scanned image will appear in the ArcSoft PhotoStudio 2000 or other plug-in compatible application window as an "Untitled" file. 8 Save the Scanned Image p. 34 Save the image with ArcSoft PhotoStudio 2000 or other plug-in compatible application, specifying a folder and file name. 12 STEP 1 Scanning Preparations Step 1 presents the essential preparations for scanning. The following procedures are explained on the indicated pages. s Displaying the Plug-in Module CS-U Control Panel p. 14 p. 16 p. 17 p. 18 p. 19 p. 21 p. 23 p. 24 p. 25 w s Positioning Originals w s Previewing w s Selecting the Output Device s Setting the Resolution and Magnification s Setting the Scan Mode w s Verifying the Image Before Scanning s Rotating the Image s Setting Preferences 13 STEP 1 Displaying the Plug-in Module CS-U Control Panel The Plug-in Module CS-U control panel is used to perform scans. Plug-in Module CS-U can be opened from CanoScan Toolbox CS or ArcSoft PhotoStudio 2000 and other plug-in compatible application programs. To quit Plug-in Module CS-U, click on the close box at the top left of the control panel. Adjusts the settings for the scanning job such as the scan mode, output device, resolution and magnification. Close Box Quits Plug-in Module CS-U. Menu Bar Click on any menu item to display more options in a pull-down menu. RGB Values Displays the R, G,and B values at the current cursor position (pre-adjusted value/post-adjusted value) Buttons Click the appropriate button to zoom, rotate or browse the image or correct colors, adjust the histogram or start the preview or scan. The image size and disk size that were specified in the preview window are automatically displayed here. Preview Window Displays the image in preview mode. 14 STEP 1 Operating Procedures The following provides an example of scanning from within ArcSoft PhotoStudio 2000. Verify that the scanner is attached to your computer and that the power is on. Read the Getting Started guide for instructions on how to connect the scanner. Start ArcSoft PhotoStudio 2000. Select Plug-in Module CS-U from within ArcSoft PhotoStudio 2000. Open the [File] menu, select [Acquire] and [CanonPI CS-U 3.8.0...]. The Plug-in Module CS-U control panel will display. Caution · Plug-in Module CS-U is not a stand-alone application program. It must be started from a plug-in compatible application program, such as CanoScan Toolbox CS or ArcSoft PhotoStudio 2000. · The size of the Plug-in Module CS-U control panel will vary according to the resolution of the computer display. · The size of the control panel can be adjusted with the [Preview Window...] option in the [Preferences] menu (p. 26). 15 STEP 1 Positioning Originals Place the original you intend to scan on the scanner's document glass (platen). Procedures Place the original on the scanner's document glass. Open the cover and set the original face down on the scanner's document glass with the top edge at the front of the scanner. Align the original's corner with the alignment mark. Bottom Edge of the Document Top Edge of the Document Alignment Mark Close the cover carefully so the original does not shift out of position. Caution · Be careful not to dirty the document glass when placing items on it. · If an original has distinct horizontal or vertical lines, you should try to position it on the document glass as squarely as possible to have the lines appear straight. · The maximum scanable size is the area of the entire document glass. · Straighten out curls or folds in originals before placing them on the document glass. 16 STEP 1 Previewing The preview scan is a trial scan performed before the final scan that encompasses the entire scanable area of the document glass. The preview image is shown in the preview window. Use this image to specify a scan area and adjust the scan settings for the image. Operating Procedures Click on the [Preview] button. · The image will be scanned and appear in the preview window. ª Hint · To change the size of the preview window, use the [Window Size] settings in the Preview Window Settings dialog (p. 26). Caution · The Dynamic Preview function enables changes to settings, such as the scan mode and brightness, to be immediately reflected in the preview image. · Nevertheless, the preview image provides only an approximation of the scan and the final results may differ to some degree from it. · If the color balance of the preview image is markedly different from the original or color appears in portions of the image that should be white, calibrate the scanner by selecting [Preferences] and [Calibration] (p. 27). Calibrating the scanner sets the correct white balance. 17 STEP 1 Selecting the Output Device Use the following procedures to select the output device (printer, etc.) for the scanned image. Select the device that corresponds best to your output device and use of the image. Operating Procedures Click the arrow on the [Output Device] section of the control panel and select a device from the pop-up menu. Caution · You can set the device categories in the pop-up menu in advance. You can also add new devices to the pop-up menu. See Setting Preferences (p. 25). 18 STEP 1 Setting the Resolution and Magnification The magnification of an image can be changed before scanning to accommodate reproductions that are larger or smaller than the original. The settings can be changed in increments of 1%. 12"/30cm Scanning at 200% 6"/15cm 4"/10cm Scanning with horizontal/ vertical 2x magnification 8"/20cm Scanning at 50% Scanning with horizontal/ vertical 0.5x magnification 3"/7.5cm 2"/5cm Changing the magnification setting causes the resolution display on the control panel to change correspondingly. This resolution setting is referred to as the "scanning resolution." Output Device Resolution= 720 dpi, Magnification= 100% ª Magnification Scanning Resolution Magnification changed to 50% The scanning resolution changes accordingly. ª Hint Magnification and Resolution Why does the image size change with the magnification? Let us answer this with an example using a "BJ (720 dpi)" output device. If you were to scan an image with this device setting and set the magnification factor to 50%, the scanning resolution will automatically change to 360 dpi. At this setting, the image will be scanned at a resolution of 360 dpi and the output device will convert this to 720 dpi, shrinking the size of the output in the process because it will only have half the data with which to fill the space. Image size = 5"x5" (12.7 x 12.7cm) Magnification 50% Image size = 2.5"x2.5" (6.35 x 6.35cm) Scanned at 360 dpi Output device corrects to 720 dpi 19 STEP 1 To Set the Magnification Factor Set the desired magnification factor on the control panel. Slider Drag the slider bar in either direction or use the arrow keys to change the resolution. Click the up or down arrow to increase or decrease the setting. Click here to return the magnification factor to 100%. Click inside these boxes to enter values directly. Hint The Relationship Between Data Volume and Scanning Resolution The higher the magnification and scanning resolution settings, the greater the file size of scanned images. There are certain inconveniences associated with large data volumes, such as longer processing times and the risk of running out of memory resources. You are advised against setting the resolution higher than necessary. For example, if you scan an A4 (21.0 x 29.7 cm (8.3 x 11.7 in.)) size image in the color mode, the amount of data varies according to the resolution. 408MB 102MB A4 color image 25.5MB 1.6MB 75dpi 6.3MB 150dpi 300dpi 600dpi 1200dpi * These numbers are approximate and may differ from actual scan results. 20 STEP 1 Setting the Scan Mode When an image is scanned, it is read as a collection of "dots." The scan mode that is selected determines how each of these dots is represented in the output. The following four scan modes are available. Black and White Expresses images in two colors only: black or white. A dot is expressed as either black or white according to its brightness level and the value set as the threshold value, which can be freely set. Select this mode to output to a monochrome printer. Grayscale Expresses images in 256 shades of gray. Select this mode to scan black and white photographs or create monochrome images from color images. Color (Documents) By scanning more slowly than the Color (Photos) mode, this mode reproduces fine text or lines in greater detail. Select this mode to scan color documents with fine print or graphics. Scanning in this mode takes approximately twice as long as in the Color (Photos) mode. Color (Photos) Expresses each color channel (RGB) in 256 shades (8 bit). Select this mode to scan standard color photographs. Hint Scanning the same image in the four different scan modes produces different file sizes. By size, black and white mode requires the least disk space, followed in order by the grayscale and the color modes. Before scanning, check the data volume indicated on the control panel. The numerator indicates the amount of disk space required for the scanned image while the denominator indicates the amount of disk space available. When the required space exceeds the available space, the scan button is unavailable. 21 STEP 1 Operating Procedures Click the arrow beside Scan Mode. Selecting the box opens the pop-up menu. Select a scan mode from the pop-up menu. 22 STEP 1 Verifying the Image before Scanning Before initiating the final scan, it is advisable to check the intended results with the Browser function. The image in the browser window is more accurate than the one in the preview window, allowing you to verify the results more precisely before scanning. To Verify the Image Set the magnification and scan mode to the appropriate settings. Click on the [Browser] button. · The selection frame will appear in the preview window to enable a portion of the image to be selected. · The size and shape of the selection frame cannot be changed because it is automatically determined by the scanning resolution. Selection Frame ª Move the pointer in the selection frame inside the preview window. · The mouse cursor will change to a "+" sign shape. Move the Selection Frame to the desired position with the mouse cursor. · Moving the mouse will move the Selection Frame. Click the mouse button when the selection frame is in the correct position. · The image will be scanned and the browser image displayed in the middle of the monitor. Once you have examined the browser image, click the mouse button again to close the browser window. · The browser window will close. · It does not matter where the mouse cursor is positioned to close the browser window. 23 STEP 1 Rotating the Image You can rotate the image in the preview window clockwise to the right or counterclockwise to the left in increments of 90 or 180 degrees. To rotate the image, click the appropriate button. Caution · If you rotate the image in the preview area, the scanned image will also rotate. Operating Procedures Use these buttons to rotate the image: To rotate the image counterclockwise 90 degrees To rotate the image clockwise 180 degrees To rotate the image clockwise 90 degrees 24 STEP 1 Setting Preferences The Preference settings determine how Plug-in Module CS-U operates for the following options: output device (printer, files), scan area setting method, size display units, preview window size, and close plug-in after scan. You can change these options at any time or restore the factory default settings. To change any of these options, use the Preferences menu. Output Device Adds new output devices or file formats to the pop-up menu in the control panel. Devices are displayed by name. Resolution and other settings can be changed for the devices or the devices can be removed. Adds a new device. Allows you to change the name and resolution setting. Allows you to remove a device from the list. Hint · The preset devices cannot be edited or deleted. Aspect Ratio To set the size of the area to be scanned, drag the mouse to size the selection frame in the preview window. The area inside the borders of the selection frame will be scanned. When the [Independent] setting is selected, the selection frame can be freely resized and reshaped by dragging it. When the [Constrained] setting is selected, choose a paper size in the [Mode] option. The selection frame will have a fixed aspect ratio (height to width ratio) when it is resized in the preview window. 25 STEP 1 Unit Specifies the units that define the size of the scanned image. Unit Settings Dialog The units displayed in this section of the control panel will change. Preview Window You can size the preview window and set its resolution. Enter a large value for a large preview window size. You can also use this feature to set the auto preview and preview cache options. Preview Window Settings Dialog Allows you to enter values and change settings for the preview window options. The maximum values are determined by the type of monitor you are using. Click the appropriate radio button for the function you want to switch on (Automatically perform a preview, Save preview image and None). Only one button can be selected. Caution · Changing the preview window size will cause the image previously displayed in the preview window to disappear. Hint · If the "Save preview image" option is selected, the last preview image will appear in the preview window when Plug-in Module CS-U is launched again after quitting once. This reduces the steps required to rescan the same image repeatedly. 26 STEP 1 Calibration Adjusts the white balance to the correct value so that all the colors are scanned correctly. Calibration takes approximately 1 minute. If the color balance of a scanned image is off-balance, select this option to calibrate the scanner input. Reset Default Settings Returns the preference settings and all other settings to the factory default settings. The tables list the major default settings. Scan Mode Magnification Unit Basic Resolution Control Panel Position Image Unsharp Mask Descreen Color (Photos) 100% Pixels 72 dpi Center Standard Off Off Close Plug-in After Scan This setting determines whether or not Plug-in Module CS-U closes automatically after completion of the scanning job. After you install Plug-in Module CS-U, this setting is set to on (Plug-in Module CS-U closes at completion of scanning). To turn this feature off, open the [Preferences] menu and select [Close Plug-in After Scan]. This feature is switched off when you don't see it marked with a check mark. To switch the feature on, click it again to show the check mark. 27 STEP 1 Operating Procedures Open the [Preferences] menu in the control panel. Select the desired option from the pull-down menu. · Selecting any one of the Output Device, Aspect Ratio, Unit or Preview Window options displays the respective dialog. Choose the desired value in the dialog and select [OK] to change the setting. · A confirmation dialog will display if Reset Default Settings is selected. The settings will be reset if [OK] is selected in that dialog. 28 STEP 2 Scanning Step 2 presents the procedures for conducting the final scan, saving the scanned image in a file and editing image files. Follow the procedures below to perform the final scan. s Setting the Scan Area s Zooming p. 30 p. 31 p. 33 p. 34 w s Scanning w s Saving Scanned Images 29 STEP 2 Setting the Scan Area Using the image in the preview window, you can define the actual area to be scanned. Operating Procedures Position the pointer in the preview window. The [+] symbol marks the current position of the pointer. Click and drag the mouse in the direction you want to define on the image as a frame. The selected area is enclosed in a dotted frame. The area enclosed in this dotted frame is the area that will actually be scanned. Selection Frame · You may drag the frame in any direction. · Clicking the mouse button outside the selection frame causes the selected area to be deselected. · Moving the mouse cursor within the selection frame changes it to an omni-directional arrow [ ]. Dragging the cursor in this state will cause the selection frame to move without changing its shape. · Placing the mouse cursor over the dotted line of the selection frame causes the cursor to change into one of four shapes [ ] [ ] [ ] [ ]. Dragging the selection frame with the mouse cursor changes its shape. · Double-clicking the mouse button anywhere in the preview window selects the entire image. Hint · To specify small areas with precision, it is convenient to expand the preview display with the Zoom In button. See Zooming (P. 31). 30 STEP 2 Zooming You can specify a selected area of the image for enlargement with the zoom features. You can use the zoom function to select an area with high precision, or to select small areas for scanning. Procedures to Zoom In Select the area you want to enlarge with the zoom function. See Setting the Scan Area (p. 30). Selection Frame 31 STEP 2 Click on the Zoom In button. The selected area will be displayed in expanded form. If you want to enlarge the image again, reduce the size of the area selected with the frame and click the Zoom In button again. ª Click the Zoom Out button to restore the view prior to zooming. Hint · The image cannot be zoomed unless an area is selected. · The selection can be zoomed up to six times consecutively. If the selected area is too small, the Zoom In button will be disabled and the selection cannot be zoomed. 32 STEP 2 Scanning Once you have set the magnification and scan mode, you may proceed with the scan. Once the scan is complete, Plug-in Module CS-U automatically closes and returns to the application software, such as CanoScan Toolbox CS or ArcSoft PhotoStudio 2000, if the [Close Plug-in After Scan] setting is on. The following provides an example of scanning from within ArcSoft PhotoStudio 2000. To Initiate the Scan Specify the Scan Area. See Setting the Scan Area (p. 30). Click on the [Scan] button. ª · The scan will start. · If a check mark is present in the [Close Plug-in After Scan] option in the [Preferences] menu, Plug-in Module CS-U will automatically quit when the scan finishes. Hint · The scan button cannot be clicked if the scan area is set too small (less than 64x64 pixels) or not specified. · The scan cannot be performed if the required memory is larger than the free memory. 33 STEP 2 Saving Scanned Images Follow this procedure to save a scanned image with the parent software application. The example below shows how to save a scanned image with ArcSoft PhotoStudio 2000. See the ArcSoft PhotoStudio 2000 User's Guide. Operating Procedures After an image is scanned, the image is displayed as "Untitled." When you save the image you can give the file a name and select the folder where it is to be stored. Open the [File] menu and select [Save]. The Save dialog will open. Select the folder you want to use for the file. To select a folder, click the arrow and select the name of the folder in which you want to save the file. Enter a name for the file and click the [Save] button. Enter a file name here. 34 STEP 3 Adjusting Scanned Images Scanned images may be corrected for brightness and color tone or edited in a variety of ways. The potential adjustments vary with the scan mode utilized in the preview. Adjustments to the scanned image may be made after the image is previewed. Grayscale, Color (Photos) and Color (Documents): s Tone Adjustment s Histogram Settings s Tone Curve Settings s Brightness and Contrast Settings s Adjusting the Color Balance s Gamma Value Settings p. 36 p. 37 p. 40 p. 43 p. 45 p. 46 Black & White: s Adjusting the Threshold Value p. 48 Color (Photos) and Color (Documents): s Auto Tone Correction s Unsharp Mask s Descreen s Saving/Recalling Settings s Scanning Techniques p. 49 p. 50 p. 51 p. 52 p. 54 35 STEP 3 Tone Adjustment Use Tone Adjustment to enhance the brightness or color of the image in the preview area. Open the [Image] menu and select [Tone Adjustment], or click the [Tone Adjustment] button, to open the Tone Adjustment dialog so you can enhance the preview image. You can also click the [Auto Tone Adjustment] button so the histogram highlights and shadows are adjusted for you automatically to the optimum settings. Caution · Adjustments cannot be made when the ColorSync option is selected (p. 49). Image Menu Displays the RGB values at the current cursor position. Pre-adjusted value/ post-adjusted value Auto Tone Adjustment Button Tone Adjustment Button Tone Adjustment Dialog The Tone Adjustment dialog contains tabs for the following features: histogram, tone curve, brightness/contrast, color balance, and gamma. If black and white has been selected as the scan mode, the threshold feature also becomes available on the histogram tab. The settings selected in the Tone Adjustment dialog are also reflected in the next preview image. To scan a new item, ensure that you click the [All Reset] button to restore all of the settings to their default values. Click the appropriate tab. Here is the Tone Adjustment dialog with all the tabs you will see when color or grayscale has been selected as the scan mode. Here is the Tone Adjustment dialog you will see when black and white is selected as the scan mode. Only one tab is available. 36 STEP 3 Histogram Settings The data comprising an image contains a variety of brightness settings ranging from shadows to highlights. These settings are represented in Plug-in Module CS-U by values ranging between 0 and 255. The difference in these values determines the image's contrast. To show how much of the image data falls into each brightness setting, Plug-in Module CS-U contains a histogram feature that shows this data distribution clearly. With the histogram you can adjust the level of shadows and highlights to achieve beautiful tones with the best possible contrast. Hint · You can enhance images with the histogram options only when the image has been previewed in the color or grayscale scan modes. · You cannot enhance the image with the histogram when ColorSyncTM is selected. How to Interpret Histograms You can select the entire image or specify an area for which a histogram will be generated. The height of the peaks of the histogram is directly related to the volume of data with the corresponding value. Portion with Highlights Distribution of data with a bias toward highlights. Distribution of data with a bias toward shadows. Distribution of data widely distributed between shadows and highlights. Portion with Shadows Entire Image 37 STEP 3 How to Adjust Histograms To change the contrast in an image, the distribution of data between shadows and highlights can be adjusted by dragging the shadow and highlight marks at the bottom of the histogram. All of the data lying to the outside (left) of the shadow mark is changed to a zero value and all of the data lying to the outside (right) of the highlight mark is changed to a 255 value. The examples below show adjustments to improve the contrast. Use the [Auto] setting to adjust the histogram for most jobs (p. 39). The graphs below show images adjusted with the Auto setting. IMAGE Image with a bias 1 toward highlights IMAGE Image with a bias 2 toward shadow IMAGE 3 Image with well distributed data Move the shadow mark toward the highlight end. Move the highlight mark toward the shadow end. Move both the shadow and highlight marks inward. To Adjust a Histogram Specify the area of the image (the entire area to be scanned) for which a histogram will be generated. See Setting the Scan Area (p. 30). The histogram will not display correctly if an extremely small area is selected. To select small areas, first expand the display with the Zoom In button. See Zooming (p. 31). Click the histogram tab in the Tone Adjustment dialog to display the histogram options. Click the [Auto] button. Although you can freely move the shadow mark and highlight mark to another position, the image can be adjusted easily for optimum effect with the Auto button. 38 STEP 3 The histogram settings can be adjusted for all channels (Master) or for individual channels (R, G, B). The selectors are displayed to the left of the histogram graph (Master, R, G, B). The Master selection is unavailable if Grayscale has been selected as the scan mode. Shadow Mark All of the data to the left of this mark is set to the shadow (0) value. Drag the mark to the right or left. Displays the current level at the shadow mark. Click the up or down arrows in the spinbox to increase or decrease the setting or enter a number directly into the entry box (0~254). To restore the histogram settings, click this [Reset] button. To restore all settings to their defaults, click the [All Reset] button. Black Eyedropper Button Click the Black Eyedropper and click the position in the preview image you want to set to black (0). Auto Button Automatically sets the highlight and shadow settings for optimum effects. Clicking directly on this bar causes the shadow or highlight mark, whichever is closest, to advance to that position. Highlight Mark All of the data to the right of this mark is set to the highlight (255) value. Drag the mark to the right or left. Displays the current level at the highlight mark. Click the up or down arrows in the spinbox to increase or decrease the setting or enter a number directly into the entry box (1~255). The Tone Adjustment settings can be saved in a file and reloaded for later use. White Eyedropper Button Click the White Eyedropper and click the position in the preview image you want to set to white (255). Click on the [OK] button. The preview image will change according to the values specified with the histogram. Hint · The histogram dialog can also be displayed by selecting [Tone Adjustment] from the [Image] menu. 39 STEP 3 Tone Curve Settings You can edit the tone curve directly by changing the shape of the line on the graph. When you change the setting by manipulating the curve, you can perform fine adjustments in the brightness of only the shadows, only the highlights, or both the shadows and highlights. Hint · You cannot use this feature with the black and white or color scan modes when ColorSync is selected. Manipulating the Graph