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Mosaic detection method, mosaic detection device and electronic equipment

A detection method and mosaic technology, applied in the field of image processing, can solve the problems of expansion point selection, affecting efficiency, false negatives and false positives, and achieve the effect of increasing accuracy and improving efficiency.

Inactive Publication Date: 2019-10-22
北京市博汇科技股份有限公司
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Problems solved by technology

The advantage of this algorithm is that it does not need to preprocess the image. The disadvantage is that the selection of expansion points, traversal search will affect the efficiency, and selective search will easily lead to false negatives and false positives.
Existing mosaic detection methods have low efficiency and poor accuracy

Method used

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  • Mosaic detection method, mosaic detection device and electronic equipment
  • Mosaic detection method, mosaic detection device and electronic equipment
  • Mosaic detection method, mosaic detection device and electronic equipment

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Embodiment Construction

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. the embodiment. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0027] At present, mosaic detection methods are mainly divided into two types: detection algorithms based on edge detection and detection algorithms based on region analysis. Both algorithms are based on the rectangular properties of mosaics, that is, mosaics appear in the form of rectangles. The algorithm based on edge detection defines the mosaic template according to the rectangu...

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Abstract

The invention provides a mosaic detection method, a mosaic detection device and electronic equipment. The method comprises the following steps: acquiring a grayscale image of a video image frame, anddividing the grayscale image into a plurality of macro blocks; calculating macro block boundary change degrees of four sides of each macro block; dividing each macro block into a two-side macro blockor a three-side macro block according to the boundary change degree of the macro block; counting the number of the divided two-side macro blocks and the number of the divided three-side macro blocks;and if the number of the three-side macro blocks is greater than a preset first number threshold and the number of the two-side macro blocks is greater than a preset second number threshold, determining the video image frame as a mosaic frame. The mosaic detection efficiency is improved, and the accuracy is improved.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a mosaic detection method, device and electronic equipment. Background technique [0002] In related technologies, mosaic detection methods are mainly divided into two types: detection algorithms based on edge detection and detection algorithms based on region analysis. Both algorithms are based on the rectangular properties of mosaics, that is, mosaics appear in the form of rectangles. The algorithm based on edge detection defines the mosaic template according to the rectangular characteristics of the mosaic. The edge of the image is calculated by the edge detection operator, and the area conforming to the mosaic template is selected from the edge and marked as a mosaic block. The disadvantage of this algorithm lies in the template matching strategy, which can easily lead to false negatives and false positives. The detection algorithm based on area analysis usually a...

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Application Information

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IPC IPC(8): G06T7/00G06T7/13G06T7/136G06T7/49
CPCG06T7/0002G06T2207/10016G06T7/13G06T7/136G06T7/49
Inventor 杨镇郡姜卫平张家斌李国华
Owner 北京市博汇科技股份有限公司
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