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Color information reconstruction method for producing image with low resolution

A technology of image resolution and color information, applied in the field of color information reconstruction, can solve problems such as failure to meet user image quality requirements, full-color image quality degradation, etc., to achieve increased practicability and application range, good image quality, and processing fast effect

Inactive Publication Date: 2009-07-15
ALTEK CORP
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  • Claims
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AI Technical Summary

Problems solved by technology

This method first reduces the resolution at the beginning, so it can save most of the calculation time to meet the user's requirements for speed, but it also leads to the degradation of the final full-color image quality and cannot meet the user's image quality requirements.

Method used

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  • Color information reconstruction method for producing image with low resolution
  • Color information reconstruction method for producing image with low resolution
  • Color information reconstruction method for producing image with low resolution

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Embodiment Construction

[0023] Taking a Bayer pattern with a resolution of 4 million (ie 4M) pixels and finally a full-color image with a target resolution of 2 million (ie 2M) pixels as an example, a color information reconstruction method that reduces the image resolution is as follows image 3 As shown in the process 300, first input a full-resolution original image that does not have all color information, such as two million green pixels, one million red pixels, and one million blue pixels (G: 2M, R: 1M and B: 1M), in the CFAI calculation of step 310, only the green color information with the full resolution of 4M is reconstructed first, and in step 312, the resolution of the green color image is reduced from the full resolution of 4M to the target resolution 2M, in step 314, CFAI calculation and resolution scaling are performed at the same time to reconstruct the red and blue color information with the target resolution of 2M, and then in step 320, the resolutions are all green, red, and blue with ...

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Abstract

The invention provides a method for reconstructing color information of an image with reduced image resolution. The method includes: reconstructing first information with full resolution from a full-resolution original image that does not have all color information, then reducing its resolution to a target resolution, and directly reconstructing the original image with a target resolution The second and third information, and subsequent image processing is performed from the first to third information, so as to reconstruct a full-color image with the target resolution. Through the present invention, the time required for image calculation is greatly reduced, and the quality of the final output full-color image will not be degraded, which solves the problems in the prior art that the output image quality is good but the processing speed is slow or the processing speed is fast but the output image quality is degraded problem, to achieve the purpose of fast processing speed and good image quality. In addition, the present invention can also be applied in various color spaces, increasing its practicability and application range.

Description

Technical field [0001] The invention relates to a color image processing method, in particular to a color information reconstruction method in which the resolution is reduced from a full-resolution original image that does not have all color information. Background technique [0002] Color images can be obtained by a sensor with a specific pixel arrangement pattern corresponding to each color value, such as a Bayer pattern (Bayer pattern). Each pixel position in the original image plane obtained by this sensor only senses a single color to generate a The color value is calculated by using Color Filter Array Interpolation (CFAI) to calculate the missing color value for each pixel to generate a full-resolution red, green, and blue full-color image. In this process, in order to save the storage space for storing the full-color image, a step of scaling down is added to the image processing, so that the resolution of the full-color image is reduced to a target resolution. [0003] In ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N1/56
Inventor 廖明俊郭俊廷张尹彬
Owner ALTEK CORP
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