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Video image mosaic device, mosaic method and video surveillance system

A technology of video image and splicing device, which is applied in the direction of closed-circuit television system, image enhancement, image data processing, etc., to achieve the effect of eliminating chromatic aberration

Inactive Publication Date: 2012-10-03
FORYOU GENERAL ELECTRONICS
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Problems solved by technology

[0003] One aspect of the present invention provides a video image splicing method to improve or eliminate the color difference difference after video image splicing

Method used

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  • Video image mosaic device, mosaic method and video surveillance system
  • Video image mosaic device, mosaic method and video surveillance system
  • Video image mosaic device, mosaic method and video surveillance system

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Embodiment Construction

[0018] refer to figure 1 , the first image A and the second image B are images with stitching. In this example, the first image A is used as the reference image, and the second image B is used as the corrected image.

[0019] refer to figure 1 and figure 2 , in this embodiment, the main process of stitching image A and image B is as follows.

[0020] First, overlapping portions in image A and image B are identified, which are the first sub-image A1 of image A and the second sub-image B1 of image B, respectively.

[0021] Next, the average aveY1 of the Y component (brightness component), the average aveU1 of the U component (chrominance component), and the average aveV1 of the V component (density component) of the overlapping area sub-image A1 are calculated. Similarly, the average aveY2 of the Y component (brightness component), the average aveU2 of the U component (chroma component), and the average aveV2 of the V component (density component) of the sub-image B1 are ca...

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Abstract

The invention discloses a video image mosaic device, a mosaic method and a video surveillance system employing the mosaic device. The mosaic method comprises the following steps: acquiring a first image and a second image; identifying overlapping parts of the first image and the second image, namely a first sub-image and a second sub-image; calculating the average value of components of the first sub-image and the average value of components of the second sub-image; calculating the difference between the average value of the components of the first sub-image and the average value of the components of the second sub-image; using the difference to adjust the components of the second image; and achieving mosaic of the first image and the second image. Preferably, a first pixel is removed when the average value of the components of the first sub-image is calculated, and a second pixel is removed when the average value of the components of the second sub-image is calculated. According to the invention, chromatic difference caused after video image mosaic is effectively improved or eliminated.

Description

【Technical field】 [0001] The invention relates to video image processing, in particular to a video image splicing device, a splicing method and a video monitoring system using the splicing device. 【Background technique】 [0002] Image stitching technology has gradually matured. In the process of image stitching, there may be a big difference in color due to the fact that the two images are taken by different cameras at different times. The obvious stitching seam seriously affects the visual effect of the image. Although the stitching seam can be eliminated by image fusion, the fusion only merges the overlapping areas, which can easily lead to a "transition zone" with color differences between the fusion area and the two images, and the color difference of the non-overlapping parts of the images is still relatively large obvious. Therefore, need badly a kind of improved technical scheme to solve above-mentioned deficiency. 【Content of invention】 [0003] One aspect of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/50H04N7/18
Inventor 徐光著
Owner FORYOU GENERAL ELECTRONICS
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