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Motion object detection method and device

A moving target and detection method technology, applied in the field of target detection, can solve the problems of low detection accuracy and slow processing speed, and achieve the effect of accurate and accurate display of output results

Inactive Publication Date: 2015-01-07
CHINA SECURITY & FIRE TECH GRP +1
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Problems solved by technology

[0006] The invention provides a moving target detection method and device to solve the technical problems of low detection accuracy and slow processing speed of the moving target detection method in the prior art

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  • Motion object detection method and device

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Embodiment Construction

[0071] The moving target detection method and device provided by the present invention will be described in more detail below with reference to the accompanying drawings and embodiments.

[0072] As mentioned in the background art, traditional target detection algorithms can be roughly divided into two categories: pixel-based target detection algorithms and compression-domain target detection algorithms. The former makes full use of the RGB information of each pixel of the image and usually has higher However, the processing speed will be slower due to the need to traverse each pixel multiple times; the latter is just the opposite, because it does not need to process and analyze each pixel, and saves the time for video decoding, so The processing speed is extremely fast. On the other hand, because only unreliable motion vector information can be used, it is not enough to fully deduce the real situation of the scene, so that the accuracy of moving target detection is completely ...

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Abstract

The invention provides a motion object detection method and device. The method comprises the steps that in a compressed domain of video streaming, motion vector prediction is performed on pixel blocks of an intra-frame code in a current frame of image, so that motion vectors of the pixel blocks of the intra-frame code are obtained, wherein each frame of image in the video steaming is divided into a set number of pixel blocks according to setting rules in advance, and the sizes of all frames of images are equal; according to the frequency that motion vectors corresponding to pixel blocks located at the same position are non-vanishing vectors in the current frame of image and the continuous M frames of images before the current frame of image, all non-vanishing vectors in the current frame of image are determined; according to all the determined non-vanishing vectors, a motion area in the current frame of image is determined; the motion area is mapped into a pixel domain, in the motion area, preset targets are detected based on the pixel domain target detection algorithm, and the detected preset targets are indicated and then output. According to the motion object detection method and device, the accuracy of target detection can be improved, and the speed of target detection can be increased.

Description

technical field [0001] The present invention relates to the technical field of target detection, and in particular, to a moving target detection method and device. Background technique [0002] Moving object detection has always been the focus of research by technicians in the field of computer vision. Generally, starting from the shape, color, texture and other characteristics of the target, by establishing a mathematical model, pre-defined targets that need to be detected in the video stream are pre-defined, so as to perform motion detection on these pre-defined targets. In practical computer vision applications, moving target detection is also the basis for upper-level analysis tasks such as target tracking, action recognition, and human-computer interaction. Its accuracy and real-time performance play a crucial role in computer vision applications. [0003] The moving target detection methods commonly used in the prior art can be roughly divided into two categories: one...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/20
Inventor 田永鸿刘弘也王耀威黄铁军
Owner CHINA SECURITY & FIRE TECH GRP
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