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Method for reconstruction of pixel color values

a color value and color field technology, applied in the field of object-based color reconstruction, can solve the problems of blurred edges, artificial colors, noise enhancement, etc., and achieve the effect of limiting noise propagation and strong edge information

Inactive Publication Date: 2009-10-22
TANBAKUCHI ANTHONY AMIR
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AI Technical Summary

Benefits of technology

[0011]In particular, the method executes the following steps. A particular pixel not sensed in said first color has its first color value estimated through determining local gradients (82) among various first color values assessed, and in accordance with such gradients such estimating is executed through interpolating (84, 86) along relatively stronger edge informations. For a particular pixel not sensed in a particular further color that further color's value is estimated in a direction along with relatively smaller differences evaluated in the first color (94, 96). Advantageously, the method has the ability for limiting noise propagation.

Problems solved by technology

However, in earlier realizations, the resulting reconstructed array often had artificially colored, noise-enhanced, or blurred edges.

Method used

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  • Method for reconstruction of pixel color values
  • Method for reconstruction of pixel color values

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Embodiment Construction

[0023]FIG. 1 illustrates a Bayer matrix of image points for use with the present invention. Alternatively, other arrangements could be used, such as through using subtractive colors, such as cyan, magenta, and yellow, or through various other published embodiments. As shown, the matrix has Green pixels arranged according to a chessboard organization. The remaining pixels have been used for Red pixels in odd rows and Blue pixels in even rows.

[0024]Now, the intended end result of the reconstruction embodiment is three complete images of Red, Green, and Blue pixel values, respectively, where the original recording did yield less than three values for each respective pixel, according to the pixel pattern for the respective single color. It is known from advance that at each pixel location, two values must be estimated. In practice, the application most favored is to a Bayer pattern wherein the green pixels form a chessboard pattern, while the non-green fields have alternating red and bl...

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Abstract

A method of color reconstruction includes a first process for a first pixel and a second process for the first pixel. The first process includes extracting a first kernel from a multi-color matrix, generating first variance weights from the first kernel, and generating a first color based on the first variance weights and adjacent pixel values of the first color. The second process includes extracting a second kernel from the multi-color matrix, generating second variance offsets from the second kernel, and generating a second color based on the second variance offsets and an adjacent pixel of the second color.

Description

[0001]The priority benefits of the Oct. 10, 2002 filing dates of U.S. provisional applications Ser. Nos. 60 / 417,142 and 60 / 417,152 are hereby claimed.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to a method and apparatus for object-based color reconstruction in a multi-color based sensor arrangement through maintaining coherence within objects and along edges, and a computer program and computer program product for controlling such method, and an image sensing facility comprising such apparatus. In particular, the invention relates to a method for executing object-based color reconstruction in a multi-color matrix-based sensor arrangement that estimates color value through determining local gradients among various luminance component values assessed.[0004]2. Description of Related Art[0005]Multi-color matrix-based sensor arrangements that include color sensors that have one first luminance component sensed at a relatively higher spati...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G06K9/00
CPCH04N9/045H04N5/367H04N25/68H04N23/843H04N25/134
Inventor TANBAKUCHI, ANTHONY AMIR
Owner TANBAKUCHI ANTHONY AMIR
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