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A video image sharpening method and image processing equipment

A video image and sharpening technology, applied in the field of image processing, can solve the problems of enhancing the edge and details of the video image, amplifying the noise of the video image, affecting the quality of the video image, etc., so as to achieve the effect of good sharpening and avoid noise.

Active Publication Date: 2019-04-30
ARKMICRO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a video image sharpening method, a computer-readable storage medium and an image processing device, aiming to solve the problem that the weak edges in the image are not obvious in the video image sharpening method of the prior art, and the enhancement of the video image At the same time as the edges and details, the noise of the video image will also be over-amplified, which will affect the quality of the video image

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  • A video image sharpening method and image processing equipment
  • A video image sharpening method and image processing equipment
  • A video image sharpening method and image processing equipment

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Embodiment 1

[0023] see figure 1 , the video image sharpening method provided by Embodiment 1 of the present invention includes the following steps: It should be noted that if there are substantially the same results, the video image sharpening method of the present invention does not use figure 1 The flow sequence shown is limited.

[0024] S101. Line-buffer the input pixel information to obtain pixels in an N*N area, where N is an integer greater than 1.

[0025] The pixel information may be a pixel luminance signal or a pixel chrominance signal.

[0026] In Embodiment 1 of the present invention, N usually takes 3, 5 or 7, and of course it can also be other integers. Comprehensive effects, hardware consumption, etc., N is preferably 5.

[0027] Assuming that N is 5, in the pixels in the 5*5 area, use D11, D12, D13, D14, D15 to represent the first row of pixels, D21, D22, D23, D24, D25 to represent the second row of pixels, D31 , D32, D33, D34, D35 represent the third row of pixels, D...

Embodiment 2

[0056] Embodiment 2 of the present invention provides a computer-readable storage medium, the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the video image sharpening method provided in Embodiment 1 of the present invention is implemented. A step of.

Embodiment 3

[0058] Figure 4 A specific structural block diagram of an image processing device provided in Embodiment 3 of the present invention is shown. An image processing device 100 includes: one or more processors 101, memory 102, and one or more computer programs, wherein the processor 101 and the memory 102 are connected by a bus, the one or more computer programs are stored in the memory 102, and configured to be executed by the one or more processors 101, and the processor 101 executes the The steps of the video image sharpening method provided in Embodiment 1 of the present invention are implemented when the computer program is described.

[0059] The image processing device provided in Embodiment 3 of the present invention may be a video camera or the like.

[0060] In the present invention, since the pixel is sharpened in two stages, the sharpening effect is better; and since the accumulated value representing the boundary information of the central pixel point is taken as an...

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Abstract

The invention is applicable to the field of image processing, and provides a video image sharpening method and image processing equipment. The method comprises the following steps: carrying out line caching on input pixel point information to obtain pixel points in an N * N region; Multiplying each pixel point by a corresponding coefficient, and performing accumulating to obtain an accumulated value; Respectively calculating the sharpness of the central pixel point in a plurality of directions; taking Absolute values of the accumulated values to obtain different gain coefficients at differentboundaries, multiplying the gain coefficients by gain adjustment values to obtain newly-added benefit coefficients, multiplying the accumulated values by the newly-added benefit coefficients, and adding the multiplied values to original central pixel points to obtain first-level sharpening values; Comparing the sharpness of the central pixel point in a plurality of directions, and multiplying themaximum value by the second-level sharpening gain to serve as a second-level sharpening value; And adding a primary sharpening value and a secondary sharpening value to the original central pixel point to obtain a sharpening result of the central pixel point. The sharpening effect is good, the weak boundary can be sharpened strongly, the sharpening gain can be minimized for noise, and the noise ofthe image is prevented from being excessively amplified.

Description

technical field [0001] The invention belongs to the field of image processing, in particular to a video image sharpening method and image processing equipment. Background technique [0002] The image information collected by the video camera will contain noise information due to factors such as the physical limitations of the image sensor itself, the working environment, and the temperature of the image sensor. During the transmission and processing of video images, smoothing and filtering are often performed on video images. Although noise can be suppressed, the contours and details of video images will inevitably be blurred, resulting in unclear contours and details of video images. Through image sharpening, the outline of the image can be compensated, and the edges, details and grayscale jumps of the image can be enhanced to make the image clearer. [0003] The video image sharpening methods in the prior art mainly preserve the edge information by superimposing the fuzzy...

Claims

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Application Information

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IPC IPC(8): H04N5/208H04N5/357
CPCH04N5/208H04N25/60
Inventor 严卫健刘俊秀邹咪袁扬智石岭
Owner ARKMICRO TECH
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