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Target detecting and tracking method and device

A technology for tracking targets and targets. It is used in character and pattern recognition, instruments, computer parts, etc., and can solve problems such as tracking failure and detectors failing to detect targets.

Active Publication Date: 2014-03-26
HUAWEI TECH CO LTD
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Problems solved by technology

[0005] However, when the tracked target rotates, the detector based on 2bitBP features may fail to detect the target, so the detection-based tracking may fail

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  • Target detecting and tracking method and device
  • Target detecting and tracking method and device

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Embodiment Construction

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0039] In the detection-based tracking scheme, in order to update the detector during tracking, the detector needs to be retrained (or learned), including offline training or online training of the classifier in the detector. In the target detection process, the classifier can be used to mark the image slices of each frame of the video sequence as the target or the background. A target usually has a certain position in each frame of image, and the position of ...

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Abstract

The invention provides a target detecting and tracking method and device. The method comprises the following steps: for image tiles of training samples in a video sequence, extracting rotation invariant binary characteristics and utilizing the rotation invariant binary characteristics to train a classifier, wherein the training samples comprise positive samples from image tiles of targets and negative samples from image tiles of backgrounds, and the classifier is used for classifying the image tiles in the video sequence into the targets and the backgrounds; for image tiles of the current frames in the video sequence, extracting rotation invariant binary characteristics and utilizing the classifier to detect targets according to the rotation invariant binary characteristics of the image tiles of the current frame so as to acquire the detection frames of the targets in the current frame, wherein the rotation invariant binary characteristics are kept unchanged when the image tiles are in rotation. According to the technical scheme, the classifier based on the rotation invariant binary characteristics is adopted for target detection during the target tracking process, so that the targets can be effectively detected even in rotation.

Description

Technical field [0001] The present invention relates to the technical field of video monitoring, in particular to a method and device for detecting and tracking a target. Background technique [0002] In video surveillance technology, it is usually necessary to detect and track the moving target in the video image sequence to obtain the moving target's motion parameters (for example, the target's centroid position, speed, acceleration, etc.) and motion trajectory for further processing And analysis to complete higher-level tasks. For example, when the camera is shooting a moving target, it can adjust the rotation and focus of the camera according to the detected and tracked target motion parameters and motion trajectory. [0003] The detection of moving targets is usually regarded as a classifier problem, that is, through the detection of each frame of video image, the image patch in each frame of video image is classified into the target (that is, the foreground) and the backgroun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/62
Inventor 刘佳周青杨杰
Owner HUAWEI TECH CO LTD
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