A detection method and detection device for a small movement of a target object

Abstract

The invention discloses a detection method and a detection device for a small-range movement of a target object, which are used to detect whether the target object has a small-range movement through the coordinate points of the target object, thereby improving the sensitivity of movement detection. The method includes: caching the coordinate points of the target object in the cache according to the order of frames, and when a first preset value of coordinate points is stored in the cache according to a preset rule, determining the coordinate points surrounded by the first preset value of coordinate points The area is the initial detection area; each time before caching the coordinate point of the target object in the current frame, judge whether the coordinate point of the target object in the current frame is within the range of the initial detection area; if so, determine if the coordinate point of the target object in the current frame is replaced The center point of the updated detection area formed after storing the longest coordinate point in the cache, and judging whether the distance between the center point and the center point of the initial detection area is less than or equal to the second preset value; if so, determine The target object moves slightly.

Description

technical field [0001] The invention relates to the technical field of image detection, in particular to a detection method and a detection device for a small movement of a target object. Background technique [0002] In intelligent video surveillance, it is often necessary to detect whether the target object moves, for example, whether a person in the picture disappears or moves. In the prior art, the detection method for whether an object is moving mainly detects whether there is an object moving in the video frame by comparing whether the images of the previous frame and the next frame change in the sequence of video frames. [0003] However, by comparing the image between the previous frame and the next frame to detect whether the entire image has changed, it is impossible to detect a specific target object, and it is impossible to identify the movement range of the target object. Contents of the invention [0004] The invention provides a detection method and a detec...

AI Technical Summary

Problems solved by technology

[0003] However, the image between the previous frame and the next frame is compared to detect whether the entire image has changed, and it is impossible to detect a specific target object and cannot identify the movement range of the target object.

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