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Pixel interpolation circuit, pixel interpolation method, and recording medium

A pixel interpolation and pixel value technology, applied in color TV, electrical components, image enhancement, etc., can solve the problems of unable to interpolate G pixels, unable to judge pixel correlation, etc.

Active Publication Date: 2011-03-30
CASIO COMPUTER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, there is a problem that the correlation of pixels around the interpolation target pixel cannot be properly judged, and an appropriate G pixel cannot be interpolated among the interpolation target pixels.

Method used

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  • Pixel interpolation circuit, pixel interpolation method, and recording medium
  • Pixel interpolation circuit, pixel interpolation method, and recording medium
  • Pixel interpolation circuit, pixel interpolation method, and recording medium

Examples

Experimental program
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Embodiment Construction

[0020] Embodiments of the present invention will be described. First, an overall configuration of a digital camera 100 according to the present embodiment will be described with reference to FIG. 1 .

[0021] The imaging lens 62 includes a focusing lens and a zoom lens, and is connected to a lens driving block 63 . This lens driving block 63 includes: respectively drive the focus motor and the zoom motor of the unillustrated focusing lens and the zoom lens along the optical axis direction parallel to the imaging plane; drive and zoom drive.

[0022] The shutter 64 that also serves as an aperture includes a drive circuit (not shown), and the drive circuit operates the shutter that also serves as an aperture in accordance with a control signal sent from the CPU 70 . In addition, the shutter 64 that also serves as a diaphragm functions as a diaphragm and a shutter.

[0023] In the CCD 50 as an imaging element, a Bayer array color filter is provided on a light receiving surface...

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PUM

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Abstract

The invention provides an pixel interpolation method. A correlation along a horizontal direction and a correlation along a vertical direction are calculated with respect to a neighboring region around an interpolation target pixel by using respective pixel values of R pixels, G pixels, and B pixels in Bayer data. The pixel value of the G pixel to be interpolated for the interpolation target pixelis determined based upon pixel values of pixels adjacent to the interpolation target pixel along a direction exhibiting a stronger correlation between the calculated correlations. The interpolation target pixel in the Bayer data is interpolated by using the G pixel of the pixel value determined.

Description

technical field [0001] The present invention relates to a pixel interpolation circuit, a pixel interpolation method, and a recording medium used in an imaging device using a single-plate color imaging method. Background technique [0002] In digital cameras, a single-plate imaging method using an imaging element in which pixels are arranged in a Bayer arrangement has become the mainstream. When acquiring an image signal from Bayer data, which is subject image data captured by an imaging element using a Bayer array, it is necessary to adjust Color information (pixel values) are interpolated. In particular, since the information of the G pixel affects the luminance information, the information of the G pixel affects the resolution of the image signal and the sharpness of the outline. [0003] Here, conventionally, Japanese Patent Laid-Open Publication No. 2000-278703 and JP-A-2000-278703 are known as techniques for interpolating G pixels with respect to interpolation target ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N9/04H04N23/12
CPCG06T3/4015
Inventor 坂本升平
Owner CASIO COMPUTER CO LTD