A target detection and tracking method, device and computer equipment
A target detection and target technology, which is applied in the field of video processing, can solve the problems of low intelligence, large amount of calculation, and reduce the amount of calculation, so as to reduce the probability of target tracking loss, improve accuracy, and reduce the amount of calculation.
Active Publication Date: 2021-11-05
HANGZHOU HIKVISION DIGITAL TECH
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Problems solved by technology
The current video surveillance system is far from meeting the needs of many applications. The main problem is that the degree of intelligence is not high.
However, due to the large amount of calculation of the deep learning method, and each video frame needs to participate in the operation of target detection, the calculation amount of this method is too large, which affects the real-time performance of target detection and tracking.
[0004] In order to reduce the amount of calculation of the above-mentioned target detection and tracking method, the method of frame skipping is often used for target detection, that is, target detection is performed every interval of a certain number of video frames. Due to the loss of target information in a certain number of video frames, target detection and tracking There is an error between the result and the actual target movement, especially when the target displacement changes too much, it is very easy to lose the target
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[0095] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. 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.
[0096] In order to improve the accuracy of target detection and tracking under the premise of reducing the calculation amount and ensuring the real-time performance of target detection and tracking, the embodiments of the present invention provide a target detection and tracking method, device and computer equipment.
[0097] In the following, a target detection and tracking method provided by an embodiment of the present invention is firstly introduced.
[00...
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Embodiments of the present invention provide a target detection and tracking method, device, and computer equipment, wherein the target detection and tracking method includes: extracting a key frame from an acquired video, where the key frame is the first video in a plurality of consecutive video frames frame; use the preset target detection method to detect the target of the key frame, and obtain the position information of the detection frame of the target in the key frame; fuse the current frame with the key frame, and perform optical flow analysis on the fused image to obtain The characteristic displacement information of the current frame relative to the key frame, the current frame is any video frame except the key frame in a plurality of consecutive video frames; according to the position information of the detection frame in the key frame and the characteristic displacement information, determine the current frame The position information of the prediction frame in the middle; based on the position information of the prediction frame, the target is tracked. Through this solution, the accuracy of target detection and tracking can be improved on the premise of reducing the calculation amount and ensuring the real-time performance of target detection and tracking.
Description
technical field [0001] The present invention relates to the technical field of video processing, in particular to a target detection and tracking method, device and computer equipment. Background technique [0002] With the continuous progress of society and the continuous improvement of social security requirements, the application of video surveillance systems is becoming more and more common. The current video surveillance system is far from being able to meet the needs of many applications. The main problem is that the degree of intelligence is not high. For example, in a video surveillance system, traditional target detection and tracking methods are mostly carried out by artificially constructing features for search and matching. This method is complex to implement, and the types of artificially constructed features are limited and relatively fixed. If the background changes greatly or the lighting conditions change greatly, the detection and tracking results will hav...
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IPC IPC(8): G06T7/269G06K9/00
CPCG06T7/269G06T2207/10016G06V20/40G06V20/46G06V2201/07
Inventor虞抒沁谭文明
OwnerHANGZHOU HIKVISION DIGITAL TECH