Infrared image enhancement method and system based on gray level saliency weight

An infrared image and image enhancement technology, which is applied in image enhancement, image analysis, image data processing, etc., can solve the problem of not being able to fully enhance the contrast between the target and the background, and achieve the goal of retaining detailed features, improving real-time performance, and improving image enhancement quality Effect

Inactive Publication Date: 2021-11-09
武汉光智科技有限公司
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Problems solved by technology

[0006] In view of this, the present invention proposes an infrared image enhancement method based on gray level saliency weight, which is used to solve the problem that the contrast between the target and the background cannot be fully enhanced in the application scene where the target occupies a small number of pixels in the image. The problem

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  • Infrared image enhancement method and system based on gray level saliency weight
  • Infrared image enhancement method and system based on gray level saliency weight
  • Infrared image enhancement method and system based on gray level saliency weight

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[0061] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in combination with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the implementation manners in the present invention, all other implementation manners obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0062] In the research field of saliency extraction, the saliency map extracted from the image has the saliency of the target area, which can be used to improve the contrast between the target and the background. Therefore, for application scenarios where the target occupies a small number of pixels in the image (for example, the target is far away), the present invention proposes a global mapping infrared image enhancement method based on the salie...

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Abstract

The invention discloses an infrared image enhancement method and a system based on a gray level saliency weight. The method comprises the following steps: obtaining the saliency value of each gray level of an infrared image, and building a saliency set of each gray level; calculating the significance weight of each gray level by using a percentile mode; adjusting the saliency weight of a part of gray levels by adopting a self-adaptive threshold; and realizing image enhancement based on the adjusted gray level saliency weight. According to the global mapping infrared image enhancement method based on the saliency weight, balance of contrast enhancement and background region suppression is achieved, the enhanced image can effectively distinguish target regions occupying a small number of pixels in the image. Meanwhile, detail features of the background region are reserved, the image enhancement quality is effectively improved. The image enhancement can be quickly realized without complex operation.

Description

technical field [0001] The invention belongs to the technical field of infrared image processing, and specifically designs an infrared image enhancement method and system based on gray level saliency weights. Background technique [0002] Most infrared images have problems such as low contrast, blurred visual effects, and strong spatial correlation. It is necessary to enhance the infrared image that has completed non-uniformity correction to improve image quality and target clarity. At present, infrared image enhancement methods can be divided into two categories: spatial domain methods and frequency domain methods according to the operating domain of the algorithm. [0003] According to the way of mapping the gray level during image enhancement, the spatial domain methods can be divided into two categories: global-mapping methods and local-mapping methods. Among the global mapping methods, histogram equalization (HE) is the most widely used method, with many improvements, ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00G06T5/40
CPCG06T5/009G06T5/40G06T2207/10048G06T2207/20012
Inventor 邓俊杰孙莉唐亮
Owner 武汉光智科技有限公司
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