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Method and apparatus for demosaicing a color filter array image

A color filter array and color filter technology, applied in the field of image processing, can solve the problem that data cannot determine three colors, etc.

Inactive Publication Date: 2018-05-29
MARVELL WORLD TRADE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, because the various pixels of the image sensor are filtered to record only one of the three colors, the data from each pixel cannot fully determine the three colors by itself

Method used

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  • Method and apparatus for demosaicing a color filter array image
  • Method and apparatus for demosaicing a color filter array image
  • Method and apparatus for demosaicing a color filter array image

Examples

Experimental program
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Embodiment Construction

[0017] I. System architecture

[0018] figure 1 A system 100 including a demosaicing module 106 (hereinafter “module 106 ”) for demosaicing a source image 112 and generating a full-color image 114 is schematically illustrated. System 100 is included in any digital image sensing device, such as a digital camera, video camera, scanner, and / or the like.

[0019] System 100 includes image sensor 104 over which color filter array (CFA) 102 is superimposed. Image sensor 104 includes an array of pixel sensors, and CFA 102 includes an array of color filters such that each filter of CFA 102 is superimposed over a corresponding pixel sensor of image sensor 104 .

[0020] figure 2 Illustrated figure 1 An example of CFA 102 in system 100 of . CFA 102 includes an example mosaic pattern having red, blue, and green color transmissive filters arranged in a repeating pattern. For example, CFA 102 has alternating red and green filters for even rows and alternating green and blue filter...

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PUM

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Abstract

Embodiments include a method and apparatus for demosaicing a color filter array image. The method includes receiving a source image comprising a plurality of pixels, wherein each pixel of the plurality of pixels of the source image comprises a corresponding pixel value associated with a corresponding color of a plurality of colors, and wherein a first pixel of the plurality of pixels of the source image comprises a corresponding pixel value associated with a first pixel value associated with a first color of the plurality of colors; and, for a first pixel of the plurality of pixels of the source image, estimating (i) a second pixel value associated with a second color of the plurality of colors and (iii) A third pixel value associated with a third color of the plurality of colors.

Description

[0001] Cross References to Related Applications [0002] This disclosure claims priority to US Provisional Patent Application No. 61 / 913,652, filed December 9, 2013, which is hereby incorporated by reference in its entirety. technical field [0003] Embodiments of the present disclosure relate to image processing, and in particular to methods and apparatus for demosaicing images generated via color filter arrays. Background technique [0004] Color image sensors (eg, color film, digital cameras using CCD or CMOS sensors, etc.) typically sense light intensities in a limited number of distinct spectral components. The various types of color image sensors differ in how they separate and measure distinct spectral components. For example, digital cameras or other artificial color image sensor arrangements often use a spatial color filter array (CFA), such as a Bayer (Bayer) color filter array, which is positioned over the image sensor to Different spectral components of light ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N9/04
CPCG06T3/4015H04N23/843H04N25/134
Inventor H·D·李
Owner MARVELL WORLD TRADE LTD