Criminal investigation video preprocessing method based on traveling direction detection

A travel direction and preprocessing technology, applied in image data processing, instrumentation, computing, etc., can solve problems such as unseen video preprocessing methods, and achieve the effect of improving browsing efficiency

Active Publication Date: 2012-12-05
WUHAN DAQIAN INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is no such video preprocessing method

Method used

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  • Criminal investigation video preprocessing method based on traveling direction detection
  • Criminal investigation video preprocessing method based on traveling direction detection
  • Criminal investigation video preprocessing method based on traveling direction detection

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Embodiment Construction

[0037] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0038] Such as figure 1 As shown, the forensic video preprocessing method based on direction of travel detection includes the following steps:

[0039] Step S101: Import the original video, specify the region of interest in the video frame of the original video, and set the attention line in the region of interest, such as figure 2 As shown, the specific steps are:

[0040] Step S201: Obtain a frame of video image.

[0041] Step S202: Use the mouse to draw a straight line in the region of interest on the video screen, and record the mouse track coordinates.

[0042] Step S203: Create a black-and-white image equal in size to the video frame in step S202, and set all pixel values ​​of the black-and-white image to 0, that is, turn the black-and-white image completely black, and draw the mouse track line recorded in step S202 to in the all-bla...

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Abstract

The invention discloses a criminal investigation video preprocessing method based on traveling direction detection. The method comprises the following steps of: setting an attention line in an interested area according to a video picture, performing moving target traveling direction detection on the video content by combining the set attention line, and extracting a key frame number; and merging the extracted video frames into a novel video. By the preprocessing method, the traveling direction detection can be combined with attention line cross target detection, so that a video frame number with a target in an attention range in a criminal investigation video is obtained, uninterested video frames in the video are filtered, the extracted key frames are reintegrated into a novel video for browsing, the video frames required to be watched are reduced, and the information required to be attended is not lost, so that the browsing efficiency of the criminal investigation video is improved.

Description

technical field [0001] The present invention relates to a video processing method in multimedia, in particular to a method for preprocessing criminal investigation video based on traveling direction detection, which is used for criminal investigation video processing. Background technique [0002] In order to improve the comprehensive prevention and control capabilities of social security, a large number of established video surveillance systems have been widely used in public security criminal investigation business. Afterwards, the fourth major technical support for investigating and solving crimes. The essence of video investigation is to find clues and discover suspects through surveillance video. [0003] However, a large number of video surveillance systems have also brought a large amount of surveillance video recordings. In the current video investigation work, criminal investigators are all "staring" at the player while watching and recording, even in surveillance ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/20
Inventor 严国建
Owner WUHAN DAQIAN INFORMATION TECH
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