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Compression method of color image based on primary color extraction, segmentation and compression

A technology of color image and compression method, which is applied in the direction of image communication, electrical components, etc., can solve the problems of demanding data transmission bandwidth and reducing data volume, and solve the problem of narrow data transmission bandwidth, reducing data volume, and reducing data volume Effect

Inactive Publication Date: 2010-06-23
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0012] The present invention provides a color image compression method based on primary color extraction, segmentation and compression, which mainly solves the problem that the prior art cannot meet the requirements of reducing data volume, maintaining image quality and undistorted color at the same time, and the method can be widely used in data transmission bandwidth demanding occasions

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  • Compression method of color image based on primary color extraction, segmentation and compression
  • Compression method of color image based on primary color extraction, segmentation and compression
  • Compression method of color image based on primary color extraction, segmentation and compression

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Embodiment 1

[0041] Such as figure 2 As shown, the data format resolution of the original BAYER image is 2592×1944, and the image is composed of three primary colors of R, G, and B in a fixed order, with a ratio of 1:2:1. out, it is divided into three sub-images of R primary color sub-image (648×486), G primary color sub-image (1296×972), and B primary color sub-image (648×486). The amount of image data does not change, such as image 3 shown; this is split into three small images.

[0042] After extraction, the pixels are arranged according to their relative positions in the original image. For example, the coordinates of the G pixel with coordinates (0, 2) in the original image are (0, 1) in the G sub-image, and the coordinates in the original image are (1 , 0), (1, 2) the coordinates of the two R pixels in the R submap are (0, 0), (0, 1). This arrangement method preserves the relative positional relationship of pixels in the original image, that is, the correlation between pixels is ...

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Abstract

The invention relates to a compression method of a color image, in particular to a compression method of a color image based on primary color extraction, segmentation and compression. The invention effectively reduces the data quantity of the image, ensures transmitted image quality, and mainly solves the problems that the prior art cannot synchronously reduce the data quantity, maintain the image quality and keep color undistorted. The method can be widely applied to the occasions with harsh requirements on bandwidth for data transmission.

Description

technical field [0001] The invention relates to a color image compression method, in particular to a color image compression method based on primary color extraction, segmentation and compression, which can be applied to occasions with strict data transmission bandwidth requirements, and solves the contradiction between large amount of color image data and narrow data transmission bandwidth. Background technique [0002] There are more and more applications of color optical cameras on spacecraft, the image resolution is getting higher and higher, and the amount of image data is also increasing. The current data downlink bandwidth is becoming more and more difficult to meet the requirements of image transmission, especially in In the field of deep space exploration, such as Mars and Mercury exploration, there is an urgent need for a color image compression method with small data volume and low image distortion. [0003] Currently, there are two main ways to compress color ima...

Claims

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Application Information

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IPC IPC(8): H04N1/56H04N1/64H04N1/41
Inventor 曹剑中王华伟董森张海峰唐垚周祚峰王浩
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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