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Method for recognizing front boundary or image range of scanning image

A recognition method and boundary recognition technology, applied in image communication, electrical components, etc., can solve difficult problems

Active Publication Date: 2009-08-26
AVISION PRECISION IND (SUZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] For the above errors, the outer diameter error (Δd2) can generally be reduced by replacing the automatic paper feeding roller, but the mechanical tolerance (Δd1) between the touch switch 13 and the optical sensor is more difficult to handle

Method used

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  • Method for recognizing front boundary or image range of scanning image
  • Method for recognizing front boundary or image range of scanning image

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Embodiment Construction

[0031] The method disclosed in the present invention is used in image scanning equipment. The equipment at least includes a sheetfeeding device / mechanism and a scanning device. Therefore, the device can be a sheet-fed scanner, a Flatbed Scanner with ADF, a multi-function peripheral, a copy machine ).

[0032] As in the prior art, the paper feeding device of each device includes at least one automatic paper feeding roller, and the automatic paper feeding roller is used to drive the documents to be scanned placed on the paper tray to move to the scanning module. Since the feeding distance of the document to be scanned is preset, it can be obtained by calculating the number of rotations of the paper feeding roller, but as the use time increases, the automatic paper feeding roller will be worn out or stained. Sometimes, the moving distance of the document to be scanned driven by the automatic paper feeding roller will decrease or increase, resulting in a wrong timing to start sc...

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Abstract

A method for identifying the front boundary or image range of a scanned image, which includes using the automatic paper feeding and scanning functions of the scanning device to obtain an image that has been scanned in advance or scanned in an enlarged range; identifying the image to generate at least one valid range and Image distribution of an invalid range; changing the scanning timing of the next image according to the size of the invalid range of the previous image to reduce the invalid range of the scanned image; repeating the above steps to minimize the invalid range in the scanned image. Therefore, the present invention provides a method for identifying the front boundary or image range of an image with a learning program to solve the problem of excessive front boundary error in the image obtained by automatic paper feeding and scanning.

Description

technical field [0001] The present invention relates to a method for identifying the front boundary of a scanned image, especially for an image scanning device with an automatic paper feeding function. During the process of automatic paper feeding and scanning images, the automatic identification of the fed-in document to be scanned is completed by an automatic learning program. The method of the front boundary position or the image range of the document to be scanned. Background technique [0002] Image scanning devices with paper-feeding functions, such as paper-feed scanners, combinations of automatic paper feeders and flatbed scanners, multi-function office machines, copiers, etc., have similar methods and technical means for automatic paper feeding and scanning images . Such as Figure 1A As shown, taking the scanning device 10 combined with an automatic document feeder and a flatbed scanner as an example, the automatic document feeder includes an automatic document fe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N1/04
Inventor 陈琰成
Owner AVISION PRECISION IND (SUZHOU) CO LTD