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Device and method for motion detection of image

A motion detection and image technology, applied in the field of image processing, can solve the problems of large memory resources, occupation, and low precision, and achieve the effects of ensuring accuracy, reducing chip area and power consumption, and preventing errors

Inactive Publication Date: 2007-12-19
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The embodiment of the present invention provides a device and method for motion detection of images, which solves the problem that the motion detection unit occupies a large amount of memory resources in the prior art, and the motion detection accuracy of monitoring objects with excessive motion is not high.

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  • Device and method for motion detection of image
  • Device and method for motion detection of image

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Embodiment Construction

[0021] Embodiments of the present invention provide a device and method for motion detection on images.

[0022] In the embodiment of the present invention, it is first necessary to determine that the frame interval value of motion detection is N frames, that is, the period of sampling images used for motion detection is N (different from the frame interval used for motion estimation, motion estimation is implemented every other frame). The N value can be adjusted according to the actual situation. For motion detection with slow motion or low precision requirements, the N value can be relatively larger; for motion detection with intense motion or high motion accuracy requirements, the N value can be relatively large. smaller.

[0023] The structural diagram of the device according to the embodiment of the present invention is shown in FIG. 1 , which includes the following modules: a video encoding unit and a motion detection unit.

[0024] Video coding unit: responsible for l...

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Abstract

This invention provides a device and a method for testing movement of image, in which, the device includes: a video coding unit and a movement testing unit. The method includes: a video coding unit carries in current image and reference image and estimates movement of the current image and transmits movement vector of the current image obtained to the movement test unit to carry out inter-frame movement vector accumulation, when the estimated image sum reaches to frame interval value of the preset, the current image is the being tested image and the movement test unit picks up movement information to the being tested image according to th accumulated movement vector and reference image.

Description

technical field [0001] The present invention relates to the field of image processing, in particular to a device and method for motion detection combined with a video encoding unit. Background technique [0002] Motion detection (moving frame measurement) technology is the key technology of intelligent video surveillance system, and it is the basis of intelligent video surveillance system for motion tracking and real-time alarm. The main purpose of motion detection is to extract the moving object from the background image according to the series of background images obtained by the intelligent video surveillance system, and then perform subsequent processing such as contour extraction and motion tracking on the moving object. [0003] With the rapid development of intelligent monitoring technology and the continuous increase of people's demand for intelligent monitoring, the motion detection algorithm has gradually been greatly improved. At present, the motion detection alg...

Claims

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Application Information

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IPC IPC(8): H04N7/26H04N7/36H04N19/513
Inventor 顾骧陈劲勤
Owner HUAWEI TECH CO LTD
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