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A device to restrain pseudo color and its method to restrain pseudo color

A device for suppressing false color, applied in color signal processing circuits, electrical components, luminance and chrominance signal processing circuits, etc., can solve problems such as image false color, and achieve the effect of improving image quality and suppressing false color.

Active Publication Date: 2007-05-16
北京中星天视科技有限公司
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the problem of false colors appearing in the image after CFA interpolation in the existing image processing system, and propose a post-processing device and its false color that can suppress image false colors after CFA interpolation is completed. suppression method

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  • A device to restrain pseudo color and its method to restrain pseudo color
  • A device to restrain pseudo color and its method to restrain pseudo color
  • A device to restrain pseudo color and its method to restrain pseudo color

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Embodiment Construction

[0041] The basic idea of ​​the present invention is to use the Y component of each pixel of the image to perform edge detection, and to suppress the false color of the U and V components of each pixel of the image according to the edge value obtained by edge detection, so as to reduce the false color phenomenon in the image .

[0042] The present invention will be described in detail below with reference to the drawings and embodiments.

[0043] The false color suppression method of the present invention is carried out in the YUV color space, if the image to be processed is not in the YUV color space, it is necessary to convert the color space first.

[0044] Fig. 1 is a schematic diagram of the false color suppression device of the present invention. As shown in Figure 1, the edge detection module uses the Y component of each pixel in the image to perform edge detection to obtain the edge value Edge, and the edge detection module outputs the Y_out value, which is the same as...

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Abstract

The pseudo-color inhibiting method comprises: taking edge detection according to brightness component of pixel A to obtain its edge value (Edge) and its absolute value (abs_edge); if abs_edge > edge_max, letting abs_edge = edge_max; or else, abs_edge = edge_min; wherein, edge_min and edge_max for the minimal and maximal value of Edge; then, according to abs_edge, edge_max and edge_min, calculating pseudo-color inhibiting factors as B_gain and C_gain for color components B and C; multiplying the color components with relative inhibiting factors to output both original component A and the new components.

Description

technical field [0001] The invention relates to a digital image processing device and a processing method thereof, in particular to a digital image false color suppression device and a false color suppression method thereof. Background technique [0002] In the digital image processing system, in order to save the logic quantity of chip design and improve the processing speed of digital images, a simple CFA interpolation (Color Filtered Array interpolation) is usually used when performing CFA interpolation (Color Filtered Array interpolation) Interpolation color filter array interpolation) algorithm, for example, use the value of 2 points or 4 points around the pixel point for CFA interpolation, the result of this processing is that the interpolated image will have false colors, that is, the image after processing will appear wrong color. Especially in places where the image is dense, that is, where the edge value is large, the phenomenon of false color is very serious, whi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N1/58H04N1/56H04N9/77H04N9/64
Inventor 沈操王浩
Owner 北京中星天视科技有限公司
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