Target Tracking Method and Device
A target tracking and target technology, applied in image analysis, image enhancement, instruments, etc., can solve problems such as errors, reducing target tracking efficiency, and affecting target tracking accuracy
Active Publication Date: 2021-08-27
HUAWEI TECH CO LTD
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Problems solved by technology
In the prior art, the position of the camera that identifies the target is used as the position of the target. However, due to the large field of view of the camera, there is a large gap between the actual position of the target and the position of the camera. Therefore, the position of the camera is used as the position of the target. large error
Subsequent scheduling of cameras for target tracking needs to be based on the position of the target, so taking the position of the camera as the position of the target will affect the accuracy of target tracking and reduce the efficiency of target tracking
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[0054] Some concepts appearing in this application are explained below.
[0055] A feature can be an image or some place that is different from its surroundings in the visual field, and usually describes an area so that it can be highly distinguishable. Feature is the starting point of image analysis algorithm, and one of its most important characteristics is "repeatability". Generally speaking, the features extracted from different images of the same scene should be the same.
[0056] Feature extraction is a concept in computer vision and image processing. It refers to the use of computers to extract image information and determine whether each image point belongs to an image feature. The result of feature extraction is to divide the points on the image into different subsets, which often belong to isolated points, continuous curves or continuous areas.
[0057] Scale-invariant feature transform algorithm (Scale-invariant feature transform, SIFT) is a feature extraction alg...
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A target tracking method, the method comprising: acquiring a target feature and a first image feature of the position of the target feature in a real-time image captured by a camera, the target feature being an image feature extracted for a target in the real-time image; finding the first image feature from a database Geographical coordinates of an image feature; through calculation, find the geographical coordinates that tend to be consistent with the distances between the geographic coordinates of the multiple first image features, and tend to be consistent with the distances between the geographic coordinates of the multiple first image features The geographic coordinates of the target feature are used as the geographic coordinates of the target feature; according to the geographic coordinates of the target feature, the camera is dispatched to track the target. This method obtains the geographical coordinates of the features near the target in the real-time image through feature matching, so that the more accurate coordinates of the target can be calculated, and the accurate positioning of the target can be realized, so that the target tracking based on target positioning is more efficient and accurate.
Description
technical field [0001] It relates to the technical field of electronic communication, specifically to the technical field of monitoring. Background technique [0002] In recent years, with the development of smart city and safe city business, monitoring technology has become an indispensable product and technology. In the safe city solution, the monitoring system is the basic equipment in video criminal investigation, security early warning, and traffic command. The current target tracking technology is based on multiple cameras in the monitoring system responsible for managing the area. The first step of target tracking is to determine the position of the target, and then effectively dispatch the camera to track the target according to the position of the target. In the prior art, the position of the camera that identifies the target is used as the position of the target. However, due to the large field of view of the camera, there is a large gap between the actual positi...
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IPC IPC(8): H04N7/18G06T7/246
CPCG06T2207/10016G06T7/246H04N7/181
Inventor 王永亮应关祥薛传颂
Owner HUAWEI TECH CO LTD