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Image real-time correction output method for broad-width scanner

A real-time correction and output method technology, applied in the direction of image communication, electrical components, etc., can solve problems that have not yet been effectively optimized simultaneously

Inactive Publication Date: 2014-10-22
NINGBO MOSHI OPTOELECTRONICS TECH
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Problems solved by technology

[0003] Although the above two aspects are the key to solving the problem of wide-format scanners obtaining high quality while transmitting large-capacity image data quickly, however, there is currently no method that can effectively optimize these two aspects at the same time

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  • Image real-time correction output method for broad-width scanner

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Embodiment

[0043] Such as figure 1As shown, the present invention is mainly applied to wide-format scanners, and its hardware is mainly provided with an FPGA main control chip with an algorithm module (i.e. hardware multiplier) and a random access memory (i.e. RAM), and the output terminals are all connected to A plurality of analog-to-digital converters connected to the input end of the FPGA main control chip, a CCD transmission module connected to the output end of the FPGA main control chip, a flash memory, a DDR memory and a USB module that are bidirectionally connected to the FPGA main control chip, and The USB module is bidirectionally connected to a PC host, and a linear CCD image sensor whose output end is connected to an input end of an analog-to-digital converter and is also connected to a CCD transmission module.

[0044] Based on the above hardware structure, such as figure 2 Shown, the realization process of the present invention is as follows:

[0045] (1) After the syst...

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Abstract

The invention discloses an image real-time correction output method for a broad-width scanner. The method includes the following steps: (1) a PC host sends a scanning instruction to an FPGA main control chip; (2) the FPGA main control chip controls N linear CCD image sensors to light on at the same time and controls a CCD transmission module to control the N linear CCD sensors to acquire images synchronously and at the same time, an algorithm module in the FPGA main control chip calculates two correction parameters Alpha and Beta respectively; (3) the linear CCD sensors acquire image data and transmit the image data to analog-to-digital converters and the analog-to-digital converters convert analog signals into digital signals and transmit the digital signals to the algorithm module in the FPGA main control chip to carry out processing; (4) the algorithm module calculates gray level values corrected by all photosensitive units; (5) the FPGA main control chip transmits the gray level values corrected by the photosensitive units to the PC host for processing so as to display images. The image real-time correction output method for the broad-width scanner is reasonable in design, high in processing speed and high in imaging precision.

Description

technical field [0001] The invention relates to an image output method, in particular to an image real-time correction output method of a wide-width scanner. Background technique [0002] In recent years, due to the needs of high-resolution and ultra-wide-format inspection sites, wide-format scanners using multiple CCD (Charge Coupled Device) imaging solutions have been widely used. How to obtain high-quality scanned images while ensuring fast transmission of large-capacity image data has always been one of the most difficult problems that wide-format scanners need to solve. To solve the above problems, we need to start from the following two aspects at the same time: (1) shorten the gray scale correction time of the scanned image. Therefore, it is very necessary to correct the grayscale of the scanned image. (2) When the time-consuming image correction is no longer the bottleneck of the entire system, it is necessary to increase the speed of intermediate transmission of i...

Claims

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Application Information

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IPC IPC(8): H04N1/60H04N1/028
Inventor 陈仕隆张峰杨雷赵泽东吕坤
Owner NINGBO MOSHI OPTOELECTRONICS TECH
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