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Scanner shade compensating method and relevant device

A technology for scanners and masks, which is applied in the direction of instruments, character and pattern recognition, computer parts, etc., can solve the problem of one-dimensional unevenness of the mask, and achieve the effect of improving the uniformity of brightness

Inactive Publication Date: 2005-10-19
AVISION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Therefore, the main purpose of the present invention is to provide a method for correcting the unevenness of the light in different areas of the front, rear, left, and right of the mask, so as to solve the problem that the known technology can only correct the unevenness of the mask in one dimension.

Method used

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  • Scanner shade compensating method and relevant device
  • Scanner shade compensating method and relevant device
  • Scanner shade compensating method and relevant device

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Embodiment Construction

[0036] Please refer to image 3 . image 3 It is a schematic diagram of the scanner 30 in the present invention. The main body of the scanner 30 is covered by a casing 32, on which there is a light-transmitting platform 34; a slide rail 38 is provided inside the casing 32, and the scanning module 40 is slidably mounted on the slide rail 38, Documents can be scanned by sliding in the front-back direction (ie, the direction of the arrow A1). The processing circuit 46 in the scanner 30 is used to control the operation of the scanner 30 , and the storage circuit 48 is used to store information necessary for the operation of the scanner 30 . When the scanner 30 is to scan transparent documents 37 such as transparencies, slides, positives, negatives, etc., the mask 36 and the auxiliary frame 35 can be matched. The photomask 36 is used to emit light; the document 37 is placed on the opening 33 of the light-transmitting scanning area on the auxiliary frame 35 . When the photomask ...

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Abstract

The present invention provides an image correcting method and relevant device for file scanning. The scanner includes a casing, a shade, a slide rail and a scanning module. The casing has a transparent platform for fiole to be placed on; the shade is on the transparent platform to emit light; the scanning module is set on the slide rail in sliding mode to receive lkight emitted from the shade and transmitting the file and to produce corresponding detection signal. The compensating method is that when the scanning module slides on the slide rail to scan file, the detection signal the scanning module produces is amplified to attenuated based on the relative position of the scanning module to the slide rail.

Description

technical field [0001] The invention provides a method for correcting images produced by scanning documents and a related device, in particular to a method for compensating for non-uniform light emission of a photomask when scanning a transparent document with a photomask and a related device. Background technique [0002] The rapid development of digital electronic image system processing in recent years has been able to transmit and display digital information in a high-speed and low-cost manner, which has also greatly increased the demand for converting image information into digital electronic form via optical scanners. For example, a transmissive scanner in an optical scanner is used to scan transparent documents, such as transparencies, slides, etc. A transmissive scanner projects light through a transparent document to be scanned so that the image on the transparent document can be converted to data in digital electronic form by the scanner. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/03
Inventor 林海瑞林信宏
Owner AVISION