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Method and system for detecting image foregrounds

A foreground and image technology, applied in the field of image processing, can solve the problem of difficult to obtain foreground objects of the interactive projection system, and achieve the effect of easy acquisition

Active Publication Date: 2015-02-18
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide a detection method and detection system for the foreground of an image, so as to solve the problem in the prior art that it is difficult to obtain the foreground object of the interactive projection system under complex and changeable lighting conditions

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  • Method and system for detecting image foregrounds
  • Method and system for detecting image foregrounds
  • Method and system for detecting image foregrounds

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Embodiment 1

[0023] Such as figure 1 Shown is a flowchart of an image foreground detection method provided by an embodiment of the present invention, and the method includes the following steps:

[0024] In step S101, the image to be detected and the projected image are obtained, and a first color value and a second color value are obtained, the first color value is the color value of all pixels in the image to be detected, and the second color value is The color values ​​of all pixels in the projection image, the image to be detected includes a foreground image and the projection image as a background.

[0025] In the embodiment of the present invention, the image to be detected and the projected image are first obtained, and the color value of each pixel in the image to be detected and the color value of each pixel in the projected image are obtained by calculation, wherein the image to be detected includes a foreground image and a projected image as a background. The step of obtaining...

Embodiment 2

[0045] Such as image 3 Shown is the structural diagram of the image foreground detection system provided by the embodiment of the present invention. For the convenience of description, only the parts related to the embodiment of the present invention are shown, including:

[0046] A color value acquiring unit 301, configured to acquire the image to be detected and the projected image, and acquire a first color value and a second color value, the first color value is the color value of all pixels in the image to be detected, and the second color value The color values ​​are the color values ​​of all pixels in the projection image, and the image to be detected includes a foreground image and the projection image as a background.

[0047] In the embodiment of the present invention, the color value acquiring unit 301 firstly acquires the image to be detected and the projection image, and obtains the color value of each pixel in the image to be detected and the color value of each...

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Abstract

The invention is applicable to the field of image processing, and provides a method and a system for detecting image foregrounds. The method comprises the following steps of acquiring an image to be detected and a projection image; acquiring a first color value and a second color value; acquiring point reflection significance values of pixel points at the same positions in two images according to the first color value and the second color value; removing textures and backgrounds of the image to be detected by using a mean shift segmentation algorithm; dividing the image to be detected into a plurality of different areas; acquiring area reflection significance values of the areas according to the point reflection significance values; comparing the point reflection significance values of the pixel points and the area reflection significance values of the areas of the pixel points; and confirming the foreground in the image to be detected according to a comparison result. By the method and the system for detecting the image foregrounds, an interactive projection system can easily acquire a foreground image under the condition that illumination is complex and changeable.

Description

technical field [0001] The invention belongs to the field of image processing, in particular to an image foreground detection method and detection system. Background technique [0002] In recent years, image segmentation technology based on saliency detection has been a research hotspot in the field of computer vision and image processing. In the interactive system between the projector and the camera, the ambient light and the projected image are constantly changing. How to accurately extract foreground objects is the key to the touch detection of the interactive system. [0003] Due to the complexity of the background picture of the interactive projection system and the diversity of the application environment, the image segmentation of the foreground area is a key difficulty in the touch detection interaction. Due to the influence of the light from the projector, objects in the foreground area may appear in different colors, and it is difficult to accurately extract the ...

Claims

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Application Information

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IPC IPC(8): G06T7/00
CPCG06T2207/10024
Inventor 程俊何明王鹏
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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