i1860 型扫描仪影像处理指南(A61580_i1860

第1页 / 共106页

i1860 型扫描仪影像处理指南(A61580_i1860_ImgProc).pdf-第2页.png

第2页 / 共106页

i1860 型扫描仪影像处理指南(A61580_i1860_ImgProc).pdf-第3页.png

第3页 / 共106页

i1860 型扫描仪影像处理指南(A61580_i1860_ImgProc).pdf-第4页.png

第4页 / 共106页

i1860 型扫描仪影像处理指南(A61580_i1860_ImgProc).pdf-第5页.png

第5页 / 共106页

i1860 型扫描仪影像处理指南(A61580_i1860_ImgProc).pdf-第6页.png

第6页 / 共106页

i1860 型扫描仪影像处理指南(A61580_i1860_ImgProc).pdf-第7页.png

第7页 / 共106页

i1860 型扫描仪影像处理指南(A61580_i1860_ImgProc).pdf-第8页.png

第8页 / 共106页

1 Introduction The Kodak i1860 Scanner is a high-volume production scanner which includes image processing technology that can improve image quality and sometimes make the reproduction better than the original. You can use the ISIS Driver or TWAIN Data source (both are available on the CD that is included with the scanner) or Kodak Capture Software to enable image processing. Other popular scanning applications are also compatible with these scanners, however these applications may not be able to access all of the image processing options. Please refer to your vendor’s documentation for specific information. The Kodak i1860 Scanner provides both color/grayscale and black and white scanning simultaneously with throughput speeds up to 200 ppm. About this manual This manual provides the following: Chapter 1, Introduction includes a brief summary of the Kodak i1860 Scanner. Chapter 2, Best Practices includes information to use when setting up applications, recommendations on how to handle jam recoveries, image addressing information, controlling print streams, electronic color drop-out and much more. Chapter 3, Using the TWAIN Data source includes information on using the dialog boxes presented by the TWAIN Data source and an explanation of the fields on each tab. Chapter 4, Using the ISIS Driver includes information on using the tabs presented by the ISIS driver and an explanation of fields on each tab. Appendix A, TWAIN Image Processing Terminology — the TWAIN Data source for the Kodak i1860 Scanner has been updated to include new terminology for traditional Kodak image processing functions. See this appendix for a comparative chart to map between terms. NOTE: The scanned images used in this guide were selected for the challenges presented to a typical scanner due to the low- contrast characteristics of the images. A-61580 October 2006 1-1

Image outputs The i1860 Scanner is a duplex scanner. This means both the front and the rear side of each document may be captured. For each side captured, the scanner creates a black and white and color/grayscale image. The host application controls which of these images is transferred to the host to be stored as an image file. The Kodak i1860 Scanner can return black and white, grayscale or color images to the host. Below is a description of the valid combinations. • Front black and white: FB.tif. This image file represents the contents of the front side of the document using one-bit per pixel. • Front color: FC.jpg. This image file represents the contents of the front side of the document using 24-bits per pixel. • Back black and white: BB.tif. This image file represents the contents of the rear side of the document using one-bit per pixel. • Back color: BC.jpg. This image file represents the contents of the rear side of the document using 24-bits per pixel. NOTE: Actual file formats are determined by the host application. These image files can be controlled through the application independently. FB.tif FC.jpg BB.tif BC.jpg ( (front black and white) (front color) (back black and white) back color) 1-2 A-61580 October 2006

Another example of a simultaneous output where all four images are returned to the host would create the following four files: • Front grayscale: FG.jpg. This image file represents the contents of the front side of the document using 8-bits per pixel. • Front black and white: FB.tif. This image file represents the contents of the front side of the document using 1-bit per pixel. • Back grayscale: BG.jpg. This image file represents the contents of the rear side of the document using 8-bits per pixel. • Back black and white: BB.tif. This image file represents the contents of the rear side of the document using 1-bit per pixel. NOTE: Actual file formats are determined by the host application. These image files can be controlled through the application independently. FG.jpg FB.tif BG.jpg BB.tif (front grayscale) (front black and white) (back grayscale) (back black and white) A-61580 October 2006 1-3

2 Best Practices This chapter provides you with recommendations for program logic, which will allow you to interact efficiently with the i1860 Scanner. This high-level information is not intended to be used as a coding guide. The following information is provided in this chapter: • Basic image capture • Switching between color/grayscale and black and white • Jam recovery • Image file storage locations • Bar code recognition • Controlling print strings • Electronic Color Dropout (form design, drop-out colors) • Available image header information and its uses • Zone processing (recombining images, especially for viewing) • Programmable keys • Starting image addresses • Patch reading • Batching NOTE: The term host in the sections that follow refers to either the driver or application. Basic image capture Basic image capture is a high-level logic flow for retrieving images from the scanner. Follow this sequence to scan documents: • set up the scanner, • enable scanning, • initiate polling, • feed documents • and disable scanning. A-61580 October 2006 2-1

Scanner setup To set up the scanner: 1. Set up your scanner operating conditions: • simplex/duplex • image order • lamp timeout • transport timeout • transport timeout response • length detection status and response • multi-feed detection status and response • starting document count • printing parameters (printing status, print font, orientation and strings) • programmable keys • batching parameters (batch level, count, start and end-of-batch functions)* • patch parameters (patch types to recognize, transfer patch definition)* • starting image address* • level to follow level rules* • image address formats* *These items are only available when Image Addressing is enabled. For information on programming these conditions, see Chapters 3 or 4 (depending on your driver). For other vendor tool kits, refer to their documentation. 2. Select your Document Type/Color Correction as appropriate for color document scanning. See Chapters 3 or 4 (depending on your driver). For other vendor tool kits, refer to their documentation. 3. Determine if any changes to the Image Processing parameters need to be made for the current application. NOTE: This check needs to occur for up to four separate images from the six available options depending on your application: Front Color, Front Black and white, Front Grayscale, Back Color, Back Black and white, Back Grayscale. Image Processing parameter changes remain in effect until one of the following conditions occur: −The scanner is powered down using the power switch. −New imaging parameters are sent from the host. 4. Prepare documents according to the instructions found in the Kodak i1860 User’s Guide. 2-2 A-61580 October 2006

Enable scanning The host must issue a Scan command to enable scanning before documents can be transported through the scanner. If scanning has not been enabled, the feeder and transport system will not turn on. Initiate polling Initiate host system polling of the scanner to ensure scanned document images are transferred from the image buffer to the host system. Polling should continue until scanning is disabled. For more information see the sections entitled, “Controlling image transfer order” and “Image header information” later in this chapter. Feed documents Feed documents according to the instructions found in the Kodak i1860 Scanner User’s Guide. Disable scanning Scanning is disabled to allow the host to download configuration/setup changes between jobs and to handle certain types of errors. Scanning is also disabled when one of the following conditions occur: • The scanner is first powered on using the power switch. • An End-of-Job indicator is sent by the operator from the operator control panel touchscreen. • A scanner-unique End-of-Job command is issued by the host computer. • An error occurs requiring fault recovery. NOTE: When scanning is disabled, documents cannot be scanned until the host enables scanning. Error handling The scanner recognizes and reports a variety of error conditions. Some errors are reported to either the host or the touchscreen, while others are reported to both the host and the touchscreen. An error is defined as either a current or deferred error. A current error results from a problem in processing the current command. This can include sending an invalid command, trying to read from an empty image buffer, or an end-of-job condition. Since one or more errors may be pending at any time, current errors are reported first. A deferred error results from an error condition within the scanner, such as a document jam. Deferred errors that may have occurred are reported after current errors. NOTE: Low level commands and information will be handled by your device driver. The following information is provided for reference only. When an error occurs, the host will receive a Check Condition Status. This indicates to the host that there may be one current error and potentially one or more deferred errors. The host must follow a Check Condition Status with a Request Sense command. The Sense data will indicate the type of error that has occurred. A-61580 October 2006 2-3

To receive subsequent pending errors, the host must execute a Test Unit Ready command. If a deferred error is pending, the Test Unit Ready command will terminate with a Check Condition Status. The host follows with a Request Sense command. The combination of Request Sense followed by Test Unit Ready must be repeated until a "good" status is returned on the Test Unit Ready command. A "good" status indicates no errors (current or deferred) are pending. IMPORTANT: If at any point the host receives a Check Condition for a command and fails to issue a subsequent Request Sense command, the scanner will clear all (current and deferred) Sense data. Some error conditions disable scanning and cause the document transport to stop. These errors are reported on the touchscreen. This is done to prevent additional images from entering the image buffer while allowing the host to perform fault recovery activities. NOTE: The scanner cannot determine exactly which images were affected by the error and which images were not. If an error occurs that disables the scanner, the host can continue to read images from the image buffer without enabling the scanner. However, when the image buffer has been emptied, an error will be generated indicating fault recovery is required. This differentiates between an end-of-job disable and a disable caused by an error. The operator may continue scanning documents after the host enables the scanner. 2-4 A-61580 October 2006

资料库

i1860 型扫描仪影像处理指南(A61580_i1860_ImgProc).pdf

相关推荐

扫描仪

热门标签

最新资料