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Background subtraction method based on color constant parameters

A technology of background subtraction and color invariance, applied in the field of computer vision, can solve the problems of increasing video surveillance costs, large computer memory, time-consuming, etc., to achieve real-time video surveillance, occupying less computing memory, and less time-consuming effects

Active Publication Date: 2012-09-12
ZHEJIANG UNIV
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Problems solved by technology

[0003] In the current background subtraction technology, the misjudgment of the foreground object as the background environment often occurs. An important reason for this error is that the background subtraction method used cannot be effective when the foreground object and the background environment have similar colors. Distinguishing background and foreground objects, thus causing misjudgment of foreground objects as background or background as foreground objects
The current mainstream background subtraction methods generally use more complex algorithms. Therefore, the operation of background subtraction is often time-consuming and consumes a large amount of computer memory. This limitation increases the difficulty of embedded implementation of video surveillance and increases the The cost of video surveillance

Method used

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  • Background subtraction method based on color constant parameters

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Embodiment Construction

[0023] The purpose and effects of the present invention will become more apparent by describing the present invention in detail below in conjunction with the accompanying drawings.

[0024] like figure 1 As shown, the background subtraction method of the present invention based on color invariant parameters comprises the following steps:

[0025] Step 1: Use an ordinary video surveillance camera to collect the background RGB image of the monitoring environment and the RGB image of the foreground moving target.

[0026] The video surveillance camera adopted in the present invention is a moderately priced common camera. The camera uses PAL system to record video, and the resolution of each frame image is 352*288.

[0027] Step 2: Physically model the formation process of the image obtained in step 1) according to the Kubelka-Munk theory, and define characteristic parameters with color invariance properties in the model space.

[0028] Using the method described in G. Wyszecki...

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Abstract

The invention discloses a background subtraction method based on color constant parameters. By defining the color constant parameters directing at RGB (red green blue) images as main basis for distinguishing background pixels from foreground moving targets, the method solves the problem that foreground targets have holes due to color similarity in background subtraction technology. Besides, the method is efficient in running, small in occupied computation memory, short in consumed time, suitable for embedded application and capable of realizing real-time video monitoring.

Description

technical field [0001] The invention relates to the technical field of computer vision, in particular to a background subtraction method based on color invariant parameters. technical background [0002] Background subtraction is a basic problem in the field of computer vision, and it is the first problem to be solved in the image processing part of all computer vision applications. Video surveillance is an important application of computer vision, which is widely used in security, industrial control, automatic management and other fields. The quality of background subtraction technology directly determines the effectiveness of video surveillance. [0003] In the current background subtraction technology, the misjudgment of the foreground object as the background environment often occurs. An important reason for this error is that the background subtraction method used cannot be effective when the foreground object and the background environment have similar colors. Theref...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/20G06T7/40H04N7/18H04N9/64
Inventor 周泓陈益如冯蓉程添
Owner ZHEJIANG UNIV
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