Method for realizing color interpolation of value correction of exceptional points

Abstract

A method for realizing color interpolation of the value correction of exceptional points is disclosed. The method includes the following steps: the certain point in the BAYER matrix is set as the center to establish a 5×5 interpolation matrix, in which each point is represented by one known color and two unknown colors and the known color of the center is R or B; the known color of the center point is corrected based on the known color value of the known points in the matrix with the same color as that of the center point; the color change trends along both row and column directions in which the center point is located are judged to select the row direction or column direction in which the center as the reference direction of the interpolation calculation; and the two color values of the center point are interpolated.

Description

FIELD OF THE INVENTION[0001]The present invention relates to a method for color interpolation, and more specially to a method that is designed to realize value correction of exceptional points along with color interpolation for a Bayer color matrix obtained during the process of digital image processing.BACKGROUND OF THE INVENTION[0002]During the process of digital image processing, color interpolation must be carried out for the image obtained by a BAYER color matrix, so as to recover the image colors. Most existing methods realize interpolation for the pixel points with spatial correlation or color correlation. However, with such methods, if any exceptional point occurs in the BAYER matrix, the exceptionality will diffuse to the interpolation for the surrounding points, and thereby strongly influences the result of color interpolation; in addition, utilizing a specific method solely often results in image blur on the boundaries or pseudo colors in fine structures, which has advers...

AI Technical Summary

Benefits of technology

[0003]The object of the present invention is to provide a method for color interpolation that can realize value correction of exceptional points in an image and thereby improves image quality.

[0016]Compared to the prior art, the present invention has the following advantages: the present invention can eliminate exceptional points in an image, prevent diffusion of exceptional color values in the interpolation process, and thereby refine image details and colors; in addition, it can enhance image boundaries and make the image on the boundaries clearer, and therefore prevent pseudo colors.

Problems solved by technology

However, with such methods, if any exceptional point occurs in the BAYER matrix, the exceptionality will diffuse to the interpolation for the surrounding points, and thereby strongly influences the result of color interpolation; in addition, utilizing a specific method solely often results in image blur on the boundaries or pseudo colors in fine structures, which has adverse effect to the result of color interpolation.

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