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Intelligent monitoring and alarming method based on movement object detection

A moving target, intelligent monitoring technology, used in alarms, burglar alarms, image data processing and other directions, can solve the problems of inability to eliminate ghost images in a short time, large amount of calculation, etc., to meet the needs of multi-channel real-time monitoring, computing Simple, ghost-avoiding effects

Inactive Publication Date: 2008-07-16
UNIV OF ELECTRONICS SCI & TECH OF CHINA ZHONGSHAN INST
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Problems solved by technology

[0014] The traditional statistical model-based background method needs to establish a statistical model for each pixel point, which requires a large amount of calculation, and the moving target detection through this model cannot eliminate the "ghost" caused by the moving target in a short time

Method used

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  • Intelligent monitoring and alarming method based on movement object detection
  • Intelligent monitoring and alarming method based on movement object detection
  • Intelligent monitoring and alarming method based on movement object detection

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Embodiment Construction

[0033] The intelligent alarm method of the present invention comprises the following steps:

[0034] Step 1. Extract the grayscale information of the video signal

[0035] In the decoding module, we set the color space of the video output to YUV format, and store the Y signal as a matrix for processing in subsequent steps;

[0036] Step 2. Initialize the background matrix

[0037] The initial value of the background flag is "0". When a new frame image is entered, the background flag is first detected. If the flag is "0", the moving target is detected by the frame difference method. The specific steps are:

[0038] First, the gray value of each pixel of the frame image is subtracted from the corresponding pixel gray value of the background frame. If the result is greater than a certain threshold, it is recorded as "1" to represent the foreground point; if it is less than the threshold, It is recorded as "0" to represent the background point, thus generating a binary matrix; ...

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Abstract

An intelligent monitoring and alarm method based on moving object detection has the following steps: step 1, picking up the grey scale information of a video signal; step 2, initializing a background matrix; step 3, carrying out background-based object detection; step 4, updating the background. The invention detects an initial sequence through a frame difference method and establishes the initial background according to the detection result; after the initial background is established, a background method is used to detect a moving object; the background model adopts a mean-based difference comparison method instead of a probability threshold value comparison method; the background updating is carried out in two parts, namely a foreground point part and a background point part. The method capable of automatically updating the background can detect the moving object in time with effectiveness and timeliness, thereby avoiding a 'ghost shadow' to a great extent. Furthermore, the invention can meet the requirements of multi-path real-time monitoring with simple operation and high speed.

Description

【Technical field】 [0001] The invention belongs to the field of intelligent monitoring and is used for detection and alarm of moving objects when the camera is still. 【Background technique】 [0002] Video surveillance system is widely used in production management, security and other occasions because of its intuition, convenience and detailed information content. [0003] In order to realize intelligent monitoring, the detection technology of moving target occupies a very important position in the system. In recent decades, people have done a lot of in-depth research on moving target detection technology in image sequences. For compressed video, target detection can be carried out through the motion vector of macroblock / block, or through traditional pixel-based method for target detection. The research proves that the former has faster operation speed and the latter has better detection effect. At present, the detection technology of moving objects is quite mature. The fo...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/20G06K9/38G08B13/196
Inventor 马争雷刚勇
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA ZHONGSHAN INST
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