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Infrared image and visible-light image fusion method based on saliency region segmentation

A technology of region segmentation and image fusion, applied in the field of image fusion, it can solve the problem that the effect of region segmentation is not obvious, and achieve the effect of being more targeted, improving quality, and increasing information content.

Inactive Publication Date: 2013-10-23
PEKING UNIV SHENZHEN GRADUATE SCHOOL
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  • Application Information

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Problems solved by technology

However, for scenes lacking targets, the region segmentation effect of this method is not obvious

Method used

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  • Infrared image and visible-light image fusion method based on saliency region segmentation
  • Infrared image and visible-light image fusion method based on saliency region segmentation
  • Infrared image and visible-light image fusion method based on saliency region segmentation

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Embodiment Construction

[0027] Below through embodiment and accompanying drawing, the present invention is described in detail.

[0028] figure 1 It is a flow chart of the infrared and visible light image fusion method based on salient region segmentation in this embodiment, and its specific implementation steps are as follows:

[0029] 1. Separate the infrared and visible light images into regions.

[0030] Here, a saliency detection-based method is used for region division. A salient area in an image usually has a higher contrast in color or brightness than its surrounding area. Therefore, by calculating the contrast between an area and the surrounding area, the salient area of ​​the area can be determined.

[0031] The contrast of each area in the image can be obtained by calculating the difference between the gray level of each pixel in the image and the gray level of the pixels in the surrounding area, such as formula (1):

[0032] c ( i ...

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Abstract

The invention relates to an infrared image and visible-light image fusion method based on salient region segmentation. The method comprises the steps that (1) region segmentation is conducted on an infrared image and a visible-light image through a saliency detection method; (2) joint region expression is conducted on the images after region segmentation; (3) multi-scale and multi-direction contourlet decomposition is respectively conducted on the infrared image and the visible-light image; (4) a low-pass sub-band fusion coefficient and a band-pass sub-band direction fusion coefficient are determined according to a fusion rule corresponding to different region selections of the images after joint region expression; (5) coefficient reconstruction is carried out to acquire a fusion image of the infrared image and the visible-light image. According to the method, thermal radiation characteristics of an infrared image and scene detail characteristics of the visible-light image can be reserved in a fusion result, and accordingly the amount of information contained in the fusion image is increased and the quality of the fusion image is improved.

Description

technical field [0001] The invention relates to an infrared and visible light image fusion method based on salient region segmentation, and belongs to the technical field of image fusion. Background technique [0002] Image fusion is the information fusion of images as the research object. Its purpose is to fuse images of the same target or scene from different sensors, or images obtained by the same sensor with different imaging methods, into one image. The information of the original image can be comprehensively reflected in the fused image, and the target or scene can be comprehensively described, making it more suitable for human visual perception or computer processing. Image fusion can help the imaging system expand the scope of time and space, reduce the uncertainty of the system, improve the reliability of the system, and enhance the robustness of the imaging system. [0003] According to the stage of fusion in the processing process, according to the degree of abst...

Claims

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Application Information

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IPC IPC(8): G06T5/50
Inventor 刘宏李泽辉丁润伟
Owner PEKING UNIV SHENZHEN GRADUATE SCHOOL
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