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Detection method, content detection method and content detection device of image highlight area

A highlight area and content detection technology, applied in the field of image processing, can solve problems such as limitations, and achieve the effect of reducing the impact of specular reflection

Inactive Publication Date: 2013-06-12
RICOH KK
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Taking images without flash limits the applicability of the method

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  • Detection method, content detection method and content detection device of image highlight area
  • Detection method, content detection method and content detection device of image highlight area
  • Detection method, content detection method and content detection device of image highlight area

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Embodiment Construction

[0042] In order to enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0043] For ease of understanding, figure 1 A schematic diagram of a projector-camera system to which the present invention can be applied according to an embodiment of the present invention is given. In the following, the application scenario is a projector-camera system, and the image content to be detected is text strokes as an example for illustration. However, it should be emphasized that the above situation is only an example, and the present invention can be applied to any situation where a highlight area may appear in an image, and the present invention can be applied to other image contents such as human faces and scenery.

[0044] Before making a detailed statement, in order to help better understand the present invention, the idea of ​​t...

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Abstract

Provided are a content detection method and a content detection device of an image highlight area, and a detection method and a detection device of the image highlight area. The content detection method of the image highlight area comprises confirming a highlight impact factor of each pixel in the highlight area, wherein the highlight impact factor indicates intensity of influence of the highlight area to pixel content; and detecting content in the image highlight area based on the highlight impact factor of the pixel in the image highlight area. The detection method of the image highlight area comprises obtaining a diffuse reflection image from an original image; obtaining intensity difference between each pixel in the original image and each pixel of the diffuse reflection image; confirming an intensity difference threshold value in a self-adaption mode; and detecting the image highlight area according to the intensity difference threshold value and the intensity difference of each pixel.

Description

technical field [0001] The present invention generally relates to image processing, and more specifically relates to a detection method of an image highlight area, a content detection method and a content detection device. Background technique [0002] Images captured in certain situations often have highlighted or reflective areas, such as those captured by cameras or projector-camera systems. [0003] For example, in speeches or conferences, a projector-camera system is generally used, where projectors or large-screen display devices are often used to display relevant material content, and in situations such as teleconferences, cameras are used to shoot the projection area and display all The captured image is transmitted to the participants of the remote meeting. At this time, the surface on the projection area is often highlighted, causing the content in the highlighted area of ​​the captured image to be invisible or unclear. Therefore, the participants of the remote mee...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00
Inventor 宫卫涛王炜刘东利尹悦燕赵颖
Owner RICOH KK
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