Image Processing for Scanner 1500 and Scanner 2500 User’s Guide A-63055
ISIS is a registered trademark of Pixel Translations, a division of Input Software, Inc. Windows and Windows NT are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries.
Contents Introduction ..........................................................................................1 Features...........................................................................................2 Memory Requirements ....................................................................3 ISIS Driver .............................................................................................5 Installation........................................................................................
Length Control.........................................................................18 Long Paper..............................................................................19 Detect Page Size ....................................................................20 Read Deskew Data .................................................................21 Detect Double Feed ................................................................21 Slow Feeding ...........................................................
TWAIN Data Source............................................................................38 Installation......................................................................................38 Kodak Twain Driver Dialog Box .....................................................39 Buttons in the Kodak Twain Driver Dialog Box .......................41 Side .........................................................................................42 Method ......................................................
Image Emphasis .....................................................................56 Scanner Status........................................................................57 Mirror Image............................................................................59 Reverse Image........................................................................59 Automatic Separation (Halftone Mode)...................................60 Remove Shadow.....................................................................
Introduction Kodak’s low volume production scanners include image processing technology that can improve image quality and sometimes make the reproduction better than the original. Kodak Digital Science™ Scanner 1500 Kodak Digital Science™ Scanner 2500 You can use the ISIS driver or TWAIN Data Source (both are available on the CD that is included with the scanner) or Kodak Digital Science Low Volume Capture Software to enable image processing.
Scanner 1500 Scanner 2500 Feature Area Barcode Binary Mode / Automatic Threshold Brightness Compression Contrast Detect Double Feed Detect Page Size / Detect Paper Size Detecting Patch Codes Dither / Halftone Dots per inch / Resolution (DPI) Fit to Page Gamma Halftone Mode / Automatic Separation Image Emphasis Imprinter (Document Printer) Lamp (dropout lamp color) Length Control Long Paper Manual Feed Method Mirror Image Mode / Image Type Noise Reduction Page Page Size / Paper Size Read Deskew Data Region
Memory Requirements The Scanner 1500 and the Scanner 2500 both have 8 MB of memory already installed. This may be sufficient for your scanning needs. Additional memory may be required, depending on the selected resolution and paper size. You may add up to 64 MB more memory on SIMM modules for a total of 72 MB. (Memory is available in 8, 16, or 32 MB modules. Obtain memory at a local retailer.) Up to two SIMM modules can be installed for the required extended memory.
Duplex Scanning (8-bit) Resolution A3 A4 A5 A6 B4 B5 B6 Ledger Legal Letter 100 dpi 200 dpi 300 dpi 400 dpi 500 dpi 600 dpi 0 8 32 56 – – 0 0 16 24 40 64 0 0 8 8 16 32 0 0 0 0 8 16 0 8 24 40 64 – 0 0 8 16 32 48 0 0 0 8 16 24 0 8 32 56 – – 0 8 16 32 56 – 0 0 16 24 40 64 Duplex Scanning (4-bit) Resolution A3 A4 A5 A6 B4 B5 B6 Ledger Legal Letter 100 dpi 200 dpi 300 dpi 400 dpi 500 dpi 600 dpi 0 0 16 24 40 64 0 0 8 8 16 32 0 0 0 0 8 16 0 0 0 0 0 8 0 0 8 16 32 48 0 0 0 8
ISIS Driver Installation The ISIS driver is included with the scanner. You can install the driver from the CD. After installation of the driver is complete, install your application software on the host PC. After your application software is loaded and launched, left-click on File and choose Select Scanner. The Scanner list allows you to select the scanner you want to use. The highlighted scanner is the scanner currently in use.
Scanner Settings Dialog Box This section describes the features and buttons in the Scanner Settings dialog box. The Scanner Settings dialog box shown below appears when either the Scanner 1500 or the Scanner 2500 is selected in the Scanner list. Version information for the driver and scanner appear on the left side of the Scanner Settings dialog box. Buttons in the Scanner Following are descriptions of the buttons in the Scanner Settings dialog box.
Choose a grayscale or binary (black and white) scanning format in the Mode drop-down list box. Select the format that is best suited to your application. Grayscale provides better image quality but requires more scanning time and memory. Mode Grayscale Binary NOTES: Additional memory may be required for grayscale scanning, depending on the selected resolution and paper size. Refer to the chapter entitled Memory Requirements for more information about memory.
Dithering is a technique for reproducing halftone images, such as a photo, in binary mode. Dither Two pixel levels are used to represent the entire grayscale, thereby reducing the levels of gray required displaying an image. Using a dithering pattern requires less memory than using a grayscale mode. Choose a dithering method in the Dither drop-down list box: None, Bayer Dither 64 (64 steps), Bayer Dither 16 (16 steps), 45 degree Halftone, 0 degree Halftone, Error Diffusion, and User Download.
Dots per inch (Resolution) Dots per inch (dpi) indicates the scanning resolution, which largely determines the quality of the scanned image. The greater the resolution, the better the reproduction. However, scanning at a higher resolution also increases scanning time and file size. This function sets the resolution of the main scan and sub-scan areas. The industry standard is 200 dpi (about 8 pixels/mm).
Brightness This function allows you to adjust the image brightness, making it lighter or darker. There are two Brightness modes, Automatic and Manual, and three preset modes, Darken, Norm, and Lighten. Select the Manual radio button in the Brightness group box. You can adjust the brightness setting by dragging the Brightness sliding control bar. Select a value from 1-255. The default is 128. The smaller the number, the darker the image.
Contrast The Contrast option sets the image contrast by adjusting the difference between black and white, thereby making an image sharper or softer. In a low-contrast setting, the difference between black and white is small, so the image is softer. In a high-contrast setting, the difference between black and white is large, so the image is clearer. Select a contrast value from 1-255. The default is 128. Contrast 51 Contrast 128 Contrast 205 Select the Manual radio button in the Contrast group box.
Region Selection You can specify single-sided (simplex) or double-sided (duplex) scanning in the Region Selection group box. NOTE: Both sides of the document are scanned at a same time in duplex scanning. The front side of the image/page is output first, then the back side of the image/page. • Front Main Scan—sets scanning settings for the front side. • Back Main Scan—sets scanning settings for the back side.
Specifying an Area To capture a portion of an image, click on the Area button to access the Set Scanning Area dialog box. Area settings are determined by the X and Y positions and the width and length coordinates. Original Scanned image Set the scanning area in the Set Scanning Area dialog box on the basis of the size specified in the Page Size drop-down list box. You can also use the mouse to define the scanning area in the window. A-63055 December 1999 • Units—select mm, inches, or pixels.
Kodak Scanner Special Features Dialog Box A-63055 December 1999 This section describes the features and buttons in the Kodak Scanner Special Features dialog box. This dialog box is accessed by clicking on the More button in the Scanner Settings dialog box. The Kodak Scanner Special Features dialog box shown below appears when the Scanner 1500 is selected in the Scanner list.
The Kodak Scanner Special Features dialog box shown below appears when the Scanner 2500 is selected in the Scanner list.
Following are descriptions of the buttons in the Kodak Scanner Special Buttons in the Kodak Scanner Special Features dialog box. Features Dialog Box Barcode Click on the Barcode button to access the Barcode Parameters dialog box. This dialog box allows you to choose barcode and patch code options. Refer to the section entitled “Barcode.” Imprinter Click on the Imprinter button to access the Imprinter Parameters dialog box. This dialog box allows you to choose document printer options.
Image Emphasis Image Emphasis allows you to adjust the softness or sharpness of the scanned image. Choose one of the following image emphasis levels: High, Medium, Low, None, and Smooth. The default is Medium. Original Noise Reduction Smooth High Unwanted black speckles or splotches in a scanned document are referred to as noise. Noise Reduction improves image clarity by removing black spots, dust, or voids in white areas. Choose a noise reduction level in the Noise Reduction drop-down list box.
The Gamma option allows you to define the gamma curve setting for normal scanning and computer screen viewing. Choose one of the five gamma curves in the Gamma drop-down list box. There are standard and CRT levels in a gamma curve. If you intend to view the scanned images on a computer screen, select “CRT.” Gamma When “User Download” is selected, you must specify a gamma pattern (*.PXG file).
Long Paper When Long Paper is enabled, a lengthy type of document, such as an oil drill chart or a cardiogram, can be captured. NOTE: This feature is available only on the Scanner 2500. The scanned image is divided and filed in the size selected in the Page Size drop-down list box. The scannable length capability differs by the size of available memory. Refer to the table on the next page for details.
The length that can be scanned is determined by the memory size.
Read Deskew Data Enable Read Deskew Data to detect the skewing of a document and notify the application when a skewed document occurs. NOTE: Read Deskew Data is not available when Long Paper is enabled. Detect Double Feed When Detect Double Feed is enabled, multiple feed documents (two or more documents scanned simultaneously) will be detected. Sensitivity—when you enable Detect Double Feed, Sensitivity is also enabled.
Mirror Image Select Mirror Image to flip scanned images to create mirror images. Original Reverse Image Select Reverse Image to reverse the color of the scanned image so that black areas are white and white areas are black. Original Remove Shadow Mirror Reverse Enable Remove Shadow to remove any black lines which may appear at the top and bottom of a scanned image. When this feature is enabled, about 3 mm of the top and the bottom of the scanned image become white.
White Level From Paper When White Level From Paper is on, the first 3 mm of each document is analyzed and the background brightness level is adjusted so the background of the scanned document becomes white. White Level From Paper is “Off” when Dither or Grayscale is enabled. • Auto—when Dither and Binary are set to “None,” white level is set from a preset white color definition. • On—white level is set from the first 3 mm of a scanned document.
Binary Mode Automatic Threshold Selecting Automatic Threshold automatically sets Brightness, Contrast, White Level From Paper, Gamma, Noise Reduction, and Image Emphasis in accordance with the scanning resolution. Automatic Threshold is valid only when a binary mode is specified in Mode. Select the mode best suited for the application: Halftone Mode Automatic Separation • Mode 1—for dark documents. • Mode 2—for normal documents. • Mode 3—for light documents.
Manual Feed Modes The Manual Feed Modes group box allows you to configure the feeder in different ways, from a manual feed mode so you can scan pages one by one, to a mode where you only have to place paper in the feeder to begin scanning. Choose a manual feed mode: • Off—Manual Feed is off. • On—you can insert documents one by one. Insertion of a document starts scanning. • Auto Start—when documents are placed in the feed tray, scanning starts automatically.
Scanner Information The Counter and Status buttons in the Scanner Information group box allow you to check the scan count and roller status. Click on the Counter button to access the Counter dialog box to view the current scan count or to set up the counter. Scanner Counter—when this button is selected, the number of sheets scanned appears only on the scanner’s LCD display. User Counter—when this button is selected, the number of sheets scanned appears only in the Counter dialog box.
Click on the Status button to access the Scanner Status dialog box to view roller cleaning and replacement guidelines. Refer to the scanner’s User’s Guide for detailed information about cleaning and replacing the rollers. When you have cleaned or replaced the rollers, click on the Clear button to reset the roller status.
Barcode The scanner can read barcodes. The barcode data is analyzed and the information is sent in ASCII code to an application that supports barcode reading (e.g., Kodak Digital Science Capture Software). IMPORTANT: Your application must support barcode reading. The following barcode types can be detected: Codabar (NW-7) ITF (Interleaved 2 of 5) Code39 NOTES: Scanner speed decreases when you detect barcodes. Barcode is not available when Long Paper and Detect Paper Size are enabled.
4. Check the Enable Barcode box. 5. Select the barcode region in the Barcode Settings For drop-down list box. Ten regions can be specified: five front barcodes (Front #1-Front #5) and five back barcodes (Back #1-Back #5). 6. Select a measurement in the Units drop-down list box in pixels, mm, or inches. 7. Select the barcode in the Barcode Type drop-down list box. 8. Choose the direction of the barcode (Forward Search or Reverse Search) in Barcode Search Direction.
9. Set the barcode area: • X-Position to Begin Search—must be 10 mm (0.39 inches) to the left of the first barcode data to be read. • Y-Position to Begin Search—the length from the top of the document to the upper edge of the barcode. • Width of area on page to search—set this value 20 mm (0.79 inches) greater than the actual width of the barcode. • Length of area on page to search—set this value equal to the entire barcode search length. If the search area is large (e.g., an 8.
Detecting Patch Codes Patch codes can be used to index documents via the industry standard patch codes ll, lll, and T. The patch code data is analyzed and the information is sent to an application that supports patch code reading (e.g., Kodak Digital Science Capture Software). IMPORTANT: Your application must support patch code reading. Select a patch code by the same method used to select a barcode. NOTE: Scanner speed decreases when you detect patch codes. 1.
The Barcode Parameters dialog box lists the Front Side and Back Side settings. 4. Choose the direction of scanning (Horizontal Orientation or Vertical Orientation) in Patchcode Orientation. Type II Type III Type T Vertical Orientation Document Printer (Imprinter) Printable Characters A-63055 December 1999 The Imprinter button in the Scanner Special Features dialog box allows you to access the Imprinter Parameters dialog box in which you can set up parameters for the optional document printer.
Printing a Counter, Date, Time, or Fixed String Use the following strings to print any combination of a counter, a date, a time, or a fixed string. Counter #:9999999 The first pound character (#) encountered in the string is replaced with the value specified in the Counter dialog box. Every successive pound character (#) is printed in sequential order. Extra spaces are padded with zeroes (0) when %0# is specified.
Printing Start Position Printing is done vertically from the top of the paper. The character top (“A” in the diagram below) points to the right edge of the document. 10 mm A Start position Character top Printing area 10 mm Paper The printing start position is specified in the Printing Offset text box in the Imprinter Parameters dialog box. The horizontal printing position (the distance from the right or left margin) is set mechanically on the document printer in the scanner.
Setting up for Document Printing 1. Click on the More button to access the Scanner Special Features dialog box. 2. Click on the Imprinter button to access the Imprinter Parameters dialog box. 3. Check the Enable Imprinter box. 4. Type the character sequence in the Imprinter String text box. A time and date can also be specified. 5. Type the printing start position in the Printing Offset text box.
Counter Click on the Counter button in the Imprinter Parameters dialog box to access the Counter dialog box to view the current scan count or to set up the counter. Scanner Counter—when this button is selected, the number of sheets scanned appears only on the scanner’s LCD display. User Counter—when this button is selected, the number of sheets scanned appears only in the Counter dialog box. The Current Number and the Step Number boxes are enabled.
Compression Scanned image data can be compressed to decrease file sizes. When Compression is specified, files transmitted from the scanner decrease in size, thus allowing more images to be stored on the host PC. Select a compression type in the Compression box in the Scanned Document Name dialog box. Compression cannot be used for some applications or image file formats. For example, you cannot use Compression for the bitmap format (*.bmp) used by Windows.
TWAIN Data Source Installation The TWAIN Data Source is included with the scanner. You can install the driver from the CD. After installation of the driver is complete, install your application software on the host PC. After your application software is loaded and launched, left-click on File and choose Select Source. The Scanner list allows you to select the scanner you want to use. The highlighted scanner is the scanner currently in use. NOTE: If your PC is running Windows NT 4.
Kodak Twain Driver Dialog Box A-63055 December 1999 This section describes the features and buttons in the Kodak Twain Driver dialog box. The Kodak Twain Driver dialog box shown below appears when the Scanner 1500 is selected in the Scanner list.
The Kodak Twain Driver dialog box shown below appears when the Scanner 2500 is selected in the Scanner list.
Buttons in the Kodak Twain Driver Dialog Box Following are descriptions of the buttons in the Kodak Twain Driver dialog box. Scan Click on the Scan button to accept all selections and begin scanning. PreScan Click on the PreScan button to scan a document so you can check the selected scanning settings. Free Size Click on the Free Size button to access the Free Paper Size dialog box in which you can create and save a custom page size. Refer to the section entitled “Creating a Custom Paper Size.
You can specify single-sided or double-sided scanning in the Side group box by selecting the Simplex or Duplex radio button. Side NOTES: Both sides of the document are scanned at a same time in duplex scanning. The front side of the image/page is output first, then the back side of the image/page. Side is always available for the Scanner 2500. Side is not available for the Scanner 1500 unless ADF is selected in the Method group box.
Image Type Choose a grayscale or binary (black and white) scanning format in the Image Type drop-down list box. Select the format that is best suited to your application. Grayscale provides better image quality but requires more scanning time and memory. Grayscale Binary NOTE: Additional memory may be required for grayscale scanning, depending on the selected resolution and paper size. Refer to the chapter entitled Memory Requirements for more information about memory.
Paper Size This function determines the scanning area by a pre-determined size. The default paper size is set when a scanner is first selected. You can choose a paper size in the Paper Size drop-down list box. NOTE: Changing the paper size affects the Area, Region, Halftone (Dither), and Barcode settings. Specify the paper size before you select these functions.
Creating a New Paper Size 1. Type the paper name, width, and length into the appropriate text boxes in the Free Paper Name/Size group box in the Free Page Size dialog box. 2. Click on the Add button. The new paper size is registered and the name appears in the Added Paper Size List box. Deleting a Paper Size 1. Click on the paper size you want to delete in the Added Paper Size list in the Free Paper Size dialog box. 2. Click on the Delete button. The paper size is removed from the Added Paper Size List box.
Halftone (Dither) Dithering is a technique for reproducing halftone images, such as a photo, in binary mode. Two pixel levels are used to represent the entire grayscale, thereby reducing the levels of gray required displaying an image. Using a dithering pattern requires less memory than using a grayscale mode.
Brightness The Brightness option allows you to adjust the image brightness, making it lighter or darker. Adjust the brightness setting by dragging the Brightness sliding bar in the Front Side Settings or Back Side Settings group box. Select a value from 1-255. The default is 128. The smaller the number, the darker the image. Or you can type a value (1-255) in the Brightness text box. Scan the document to check the brightness.
Contrast The Contrast option sets the image contrast by adjusting the difference between black and white, thereby making an image sharper or softer. In a low-contrast setting, the difference between black and white is small, so the image is softer. In a high-contrast setting, the difference between black and white is large, so the image is clearer. Select a contrast value from 1-255. The default is 128.
Sub Area You can define a brightness level and dither setting for a specific area of an image that is different from the brightness level and dither setting of the whole image. This way, a picture can be dithered while the rest of the page remains undithered, or a faint stamp can be enhanced by setting a lower brightness than the rest of the page. You can define three regions per side. Each region can have its own brightness level, but all regions must use the same dither setting.
Specifying an Area To capture a portion of an image, click on the Sub Area button in the Front Side Settings group box or in the Back Side Settings group box to access the Sub Area dialog box. NOTE: The Sub Area dialog box shown above appears for the Scanner 1500. The Sub Area dialog box shown below appears for the Scanner 2500. Area settings are determined by the X and Y positions and the width and length coordinates.
More Settings Dialog Box This section describes the features and buttons in the More Settings dialog box. This dialog box is accessed by clicking on the More button in the Kodak Twain Driver dialog box. The More Settings dialog box shown below appears when the Scanner 1500 is selected in the Scanner list.
The More Settings dialog box shown below appears when the Scanner 2500 is selected in the Scanner list.
Buttons in the More Settings Dialog Box Following are descriptions of the buttons in the More Settings dialog box. Imprinter Click on the Imprinter button to access the Imprinter Parameters dialog box. This dialog box allows you to choose document printer options. Refer to the section entitled “Document Printer (Imprinter).” OK Click on the OK button to accept all of the selections.
White Level When White Level is on, the first 3 mm of each document is analyzed and the background brightness level is adjusted so the background of the scanned document becomes white. White Level is set to “From White Stick” when Halftone (Dither) or Grayscale is enabled. • From White Stick—white level is set according to the white level calibration strip in the scanner (not the scanned document). • From Paper—white level is set from the first 3 mm of a scanned document.
The Gamma option allows you to define the gamma curve setting for normal scanning and computer screen viewing. Choose one of the five gamma curves in the Gamma drop-down list box. There are standard and CRT levels in a gamma curve. If you intend to view the scanned images on a computer screen, select “For CRT.” Otherwise, choose “Normal.” Gamma A gamma setting can be specified only when a Halftone (Dither) pattern, an Error Diffusion pattern for Binary mode, or a Grayscale mode is selected.
Select Red in the Lamp box to allow the scanner to perform red dropout color. The green lamp is the normal setting. When red dropout is specified, most red characters, lines, or illustrations will not be captured when a document is scanned. Lamp NOTE: This feature is available only on the Scanner 2500. Image Emphasis Image Emphasis allows you to adjust the softness or sharpness of the scanned image.
Scanner Status The Counter and Warning buttons in the Scanner Status group box allow you to check the scan count and roller status. Click on the Counter button to access the Counter dialog box to view the current scan count or to set up the counter. Scan Counter—when this button is selected, the number of sheets scanned appears only on the scanner’s LCD display. User Counter—when this button is selected, the number of sheets scanned appears only in the User Counter box.
Click on the Warning button to access the Warning Status dialog box to view roller cleaning and replacement guidelines. Refer to the scanner’s User’s Guide for detailed information about cleaning and replacing the rollers. When you have cleaned or replaced the rollers, click on the Clear button to reset the status.
Mirror Image Select Mirror Image to flip scanned images to create mirror images Original Reverse Image Select Reverse Image to reverse the color of the scanned image so that black areas are white and white areas are black.
Automatic Separation (Halftone Mode) When Automatic Separation is enabled, the scanner automatically recognizes and separates text and photo. This function automatically sets tonal gradation type. The text is scanned in binary mode and the photo image areas are scanned in dither mode specified in Halftone (Dither). Automatic Separation is valid only when a binary mode is specified in Image Type.
Fit to Page Selecting Fit to Page allows you to specify whether documents are scanned at actual size or reduced (Fit to Page) size. Normally, the scanner scans at 100% of the actual page size. Some of the data on the edges of the page may be lost. When Fit to Page is enabled, the scanner shrinks the image to fit the scanned page. Slow Feeding Slow Feeding allows you to change the feeder speed in order to scan a thin, folded, creased, or curled document in the automatic document feeder.
Stop at Skew When Stop at Skew is enabled, the scanner stops scanning when a skewed document is detected. NOTE: This feature is available only on the Scanner 1500. Manual Feed Manual Feed allows you to configure the feeder in different ways, from a manual feed mode so you can scan pages one by one, to a mode where you only have to place paper in the feeder to begin scanning.
Document Printer (Imprinter) The Imprinter button in the Scanner Special Features dialog box allows you to access the Imprinter Parameters dialog box in which you can set up parameters for the optional document printer. The document printer can print character strings on a document. There are two printing methods: Printable Characters A-63055 December 1999 • Pre—prints on the front of the document before scanning. The printing becomes part of the scanned image.
Printing a Counter, Date, Time, or Fixed String Use the following strings to print any combination of a counter, a date, a time, or a fixed string. Counter #:9999999 The first pound character (#) encountered in the string is replaced with the value specified in the Counter dialog box. A double pound character (##) is printed as #. Extra spaces are padded with zeroes (0) when %0# is specified.
Printing Start Position Printing is done vertically from the top of the paper. The character top (“A” in the diagram below) points to the right edge of the document. 10 mm A Start position Character top Printing area 10 mm Paper The printing start position is specified in the Printing Offset text box in the Imprinter Parameters dialog box. The horizontal printing position (the distance from the right or left margin) is set mechanically on the document printer in the scanner.
Setting up for Document Printing 1. Click on the More button to access the More dialog box. 2. Click on the Imprinter button to access the Imprinter Parameters dialog box. 3. Check the Enable Imprinter box. 4. Type the character sequence in the Imprinter String text box. A time and date can also be specified. 5. Type the printing start position in the Printing Offset text box.
Counter Click on the Counter button in the Imprinter Parameters dialog box to access the Counter dialog box to view the current scan count or to set up the counter. Scan Counter—when this button is selected, the number of sheets scanned appears only on the scanner’s LCD display. User Counter—when this button is selected, the number of sheets scanned appears only in the User Counter box. The value in this box is the number of sheets scanned multiplied by the step value that appears in the step box.
EASTMAN KODAK COMPANY Document Imaging Rochester, New York 14650 Kodak, Digital Science, and the ds monogram symbol, are trademarks of Eastman Kodak Company. Printed on recycled paper.
