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Conversion and module from primitive Bayer interpolation to full color

An interpolation, green technology, applied in the field of hardware circuit implementation, can solve the problems of unsuitable engineering application, many judgment operations, prone to color cast, etc., to achieve smooth color changes, speed up processing, and easy to achieve.

Inactive Publication Date: 2006-05-31
CHIPNUTS TECH INC
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, these methods are still not effective, prone to color casts, or too many judgment operations, which are not suitable for engineering applications

Method used

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  • Conversion and module from primitive Bayer interpolation to full color
  • Conversion and module from primitive Bayer interpolation to full color
  • Conversion and module from primitive Bayer interpolation to full color

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] exist figure 1 Among them, is the sensor array in the original bayer format, the order is RGRG... is the sample value type of the first line, GBGB... is the sample value type of the second line, and the following lines are similar.

[0013] exist figure 2 In the example shown, for each pixel, the green component G is first requested. There are two cases: if pixel 5 itself is green, then G is known. Another possibility is if figure 2 As shown, the green component G5 is calculated. Introduce parameters:

[0014] H=|G4-G6|+|2*B5-B3-B7| / 2

[0015] (1)

[0016] V=|G2-G8|+|2*B5-B1-B9| / 2 (2)

[0017] HV=|H-V| (3)

[0018] Combined with the global feature interpolate_case and deadzoom_threshold parameters of the graph, using the above formula can be obtained:

[0019] if(HV>=deadzoom_threshold) { if(H

[0020] Combining the above two methods, the G component of each pixel in the whole image can be obtained.

[0021] exist imag...

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Abstract

The method includes following steps: the global describing parameters for each image, interpolate-case and deadzoom-threshold, are introduced to separately describe whole estimation direction and gradient threshold of current image; aiming at feature of Bayer image, tonal range estimation for each pixel and its neighboring pixel is introduced. The feature of invention is: first acquiring the green component from full image, and then acquiring the remaining color components, red and blue.

Description

Technical field [0001] The present invention relates to a kind of interpolation conversion method and module, can obtain the full-color (RGB) image of each pixel through the original data (usually Bayer (Bayer)) image array obtained from graphic sensor, save system Resources are not only suitable for software programs, but are especially suitable for hardware circuit implementation because they can be processed in parallel. Background technique [0002] To collect color digital images, a sensor array with three channels of RGB must be used. However, in order to reduce costs, the current common original graphic photosensitive arrays are monochromatic sampling photosensitive arrays in which each pixel has only a certain color (one of R / G / B). There is more than one specific array format, but in order to achieve the final full-size high-color application, some method must be used to recover the lost color components. Simply doing the average operation on the pixel neighborhood...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N9/04
Inventor 罗巍李林黄寅陶叶军
Owner CHIPNUTS TECH INC
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