Method and device for detecting changes between images

Abstract

The invention discloses a method and device for detecting changes between images, and relates to the technical field of image processing. The purpose is to detect changes between images easily affected by sensor noise and affect detection results when the monitoring area does not change under low illumination conditions. accuracy. The method includes: performing a morphological filtering operation on target images in the image set to obtain filtered images; using a compressed logarithmic ratio operator and a mean ratio operator to process the target images in the image set respectively to obtain the target image of each target image difference map, and perform equal-weight fusion operations on the difference maps of multiple target images to obtain a fusion difference map; compress the fusion difference image through a preset processing function to obtain a normalized fusion difference map, and normalize the fusion difference map The median filtering operation is performed to obtain the final difference map; the final difference map is clustered by a preset clustering algorithm, and the variation between images is determined according to the clustering result. The invention is suitable for detecting changes between images.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a method and device for detecting changes between images. Background technique [0002] With the development of social economy and computer vision, video surveillance has been widely used due to its intuitive, accurate and real-time characteristics. During the monitoring process, it is often determined based on the changes between images whether people or objects pass through the monitored area. Among them, the commonly used method for detecting changes between images is the two-temporal image change detection method. This method is a method that compares images taken at two different times in a certain scene without knowing the prior knowledge of the target. Differential regions are detected from the scene to determine changes between images. [0003] At present, the existing detection of changes between images is often based on the existence of a certain change betwe...

AI Technical Summary

Problems solved by technology

[0004] In view of the above problems, the present invention provides a method and device for detecting changes between images, the main purpose of which is to solve the problem of low accuracy of detection results of changes between images in the process of detecting changes between images

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