Detection method for determining alteration of shooting background and image processing device

A background and image technology, applied in the field of image processing, can solve problems such as the difficulty of effectively reducing the probability of misjudgment of whether the shooting background has been changed, and achieve the effects of reducing energy consumption, reducing the number of repeated operations, and improving accuracy

Active Publication Date: 2009-12-09
VIMICRO ELECTRONICS CORP
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Problems solved by technology

[0010] Embodiments of the present invention provide a detection method and an image processing device for determining that the shooting background has changed, so as to solve the technical problem in the prior art that it is difficult to effectively reduce the probability of misjudgment of whether the shooting background has been changed

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  • Detection method for determining alteration of shooting background and image processing device
  • Detection method for determining alteration of shooting background and image processing device
  • Detection method for determining alteration of shooting background and image processing device

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Embodiment Construction

[0074] In the prior art, the technical method of directly comparing the background reference frame with the current frame is used to detect whether the background captured by the image acquisition device has changed. Since the technical method is simple, the detection result is more likely to be wrong.

[0075] In the embodiment of the present invention, in order to detect whether the captured background has been changed, not only the background reference frame is compared with the current frame, but the background identification area in the background reference image is determined, based on the background identification area and the background Refer to the image to determine if the background has changed.

[0076] The technical solutions of the embodiments of the present invention will be described in detail below in combination with specific embodiments and accompanying drawings.

[0077] see figure 1 , figure 1 It is a flowchart of a detection method for determining a cha...

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Abstract

The invention provides a detection method for determining alteration of shooting background and an image processing device; wherein the method comprises the following steps: determining a background identification area in a background reference image; identifying an imaging area of a feature in source background in the background reference image by the background identification area; using the current frame image to obtain a contrast image of the background reference image; contrasting an image in the background identification area in the background reference image with the image in corresponding area in the contrast image to obtain a contrast result; according to the contrast result, detecting whether the shooting background in the current frame image conforms to the source background, if yes, determining the shooting background unaltered; otherwise, determining the shooting background altered. The technical proposal provided by the embodiment of the invention can effectively reduce the false detection probability on whether the shooting background is alters or not.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a detection method and an image processing device for determining the change of the shooting background. Background technique [0002] In practical applications, in order to facilitate processing of images captured by an image acquisition device such as a camera, the captured images are usually divided into two parts, a foreground image and a background image. Wherein, the background image mainly reflects the viewfinder background, and the viewfinder background may include static objects such as stationary walls, decorative objects placed at fixed positions, and other real objects. The foreground image mainly reflects dynamic objects, such as people walking in front of the camera, driving vehicles, and so on. [0003] To facilitate image processing, a background image model is usually established based on captured background images. However, if the viewfinder backgroun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00H04N5/14
Inventor 邓亚峰
Owner VIMICRO ELECTRONICS CORP
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