Image processing method and device
An image processing device and image processing technology, which are applied in image data processing, image communication, image enhancement, etc., can solve the problems of high computing cost and inability to find characters, and achieve the effect of reducing computing cost.
Inactive Publication Date: 2013-03-06
PRIMAX ELECTRONICS LTD
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Problems solved by technology
In addition to using edge detection to extract the text, the existing text detection technology also uses chroma detection and dot detection to exclude non-text graphic parts. However, the calculation cost of the existing edge detection technology is too high. High, and the technology of chroma detection and dot detection cannot find the text on the color graphics or the text close to the graphics
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[0058] Please refer to figure 1 , which is a block diagram of the image processing device 100 in a preferred embodiment of the present invention. The image processing device 100 includes a conversion module 101 , a pre-processing module 102 , a first edge detection module 103 , a second edge detection module 104 and a synthesis module 105 . First, the conversion module 101 performs color space conversion on the original image IMG_OG to obtain a converted image IMG_CV having brightness information of the original image IMG_OG. For example, the color space conversion can be conversion from RGB color space to YCC color space. Then, the pre-processing module 102 performs a pre-processing program on the converted image IMG_CV to enhance text features or reduce non-text features to obtain an input image IMG, wherein the pre-processing module 102 can be an operator (operator ) or a digital filter to perform convolution or filtering on the converted image IMG_CV. Please refer to f...
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The invention provides an image processing method and an image processing device, which are used for extracting an image with a character characteristic in an input image. The image processing method comprises the following steps of: performing a plurality of edge detection programs on the input image so as to respectively generate a plurality of edge images and acquiring a first character characteristic image according to the plurality of edge images, wherein the plurality of edge detection programs comprise the following steps of: performing a first edge detection program on the input image according to a first upper threshold value and a first lower threshold value so as to acquire a first edge image, and performing a second edge detection program on the input image according to a second upper threshold value and a second lower threshold value so as to acquire a second edge image. The invention has the advantage that: the image with the character characteristic can be rapidly and effectively extracted from the input image.
Description
technical field [0001] The present invention relates to an image processing method and related devices, in particular to an image processing method and device capable of extracting an image with character features from an input image. Background technique [0002] Generally speaking, after the scanner intercepts the image data, if it can detect the text part in the image data, the text part will be printed with pure black ink and the non-text graphic part will be printed differently. Setting can not only improve the printing quality and efficiency, but also greatly improve the readability of the image data. In addition to using edge detection to extract the text, the existing text detection technology also uses chroma detection and dot detection to exclude non-text graphic parts. However, the calculation cost of the existing edge detection technology is too high. High, and the technology of chroma detection and dot detection cannot find the text on the color graphics or the...
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IPC IPC(8): G06T5/00G06T7/00H04N1/58G06T7/12G06T7/181
Inventor 廖武杰郑丁元田百育简慧然陈再兴
Owner PRIMAX ELECTRONICS LTD