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Method for enhancing details and compressing dynamic range of infrared image

A dynamic range compression and infrared image technology, applied in the field of infrared imaging, can solve the problem of inconspicuous enhancement of fine targets

Inactive Publication Date: 2011-01-19
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
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  • Application Information

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Problems solved by technology

This algorithm has the problem that it is easy to produce halo and the fine target enhancement in the bright and dark background is not obvious, such as figure 2 As shown in the position 1 and 2 of the

Method used

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  • Method for enhancing details and compressing dynamic range of infrared image
  • Method for enhancing details and compressing dynamic range of infrared image
  • Method for enhancing details and compressing dynamic range of infrared image

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Embodiment Construction

[0036] The preferred embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0037] In this embodiment, the application of detail enhancement and high dynamic range compression processing algorithms in the present invention is illustrated through a high dynamic (14 bit) range infrared image acquired by an uncooled infrared focal plane prototype with a resolution of 320×240. image 3 A frame of high dynamic range infrared image output by the prototype contains rich detail information, but the contrast of the detail part is low, and the edge detail information of the image is blurred. The grayscale range of the image is about 2700 levels, and the grayscale of the 156th column of the image is as follows Figure 5 , this column of images contains typical detail information and scene changes, compared with image 3 It can be easily seen that a is the high-brightness detail target in the sky background, the thin lines at...

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Abstract

The invention relates to a method for enhancing details and compressing a dynamic range of an infrared image. The method comprises the following steps: 1, an original infrared image with high dynamic range is resolved into a base graph and a detailed graph through a Gauss constrained filter; 2, performing dynamic saturation extraction and non-linear dynamic range compression on the base graph and the detailed graph; and 3, synthesizing the base graph and the detailed graph and outputting. The method can be used in various infrared focal plane detector imaging systems, is easy for hardware implementation, can be widely applied in the fields of infrared warning systems, infrared night version systems, space infrared imaging study, industrial and civil infrared imaging systems and the like, and provides quick and effective infrared image detail enhancement technical means.

Description

technical field [0001] The invention relates to an infrared image detail enhancement and dynamic range compression processing method based on Gaussian constraint filtering, which belongs to the field of infrared imaging. This method can be used in various infrared focal plane detector imaging systems, and is easy to implement in hardware. It can be widely used in infrared warning systems, infrared night vision systems, space infrared imaging research, industrial and civil infrared imaging systems, etc. Image detail enhancement technology means. Background technique [0002] Infrared Focal Plane Array (IRFPA, Infrared Focal Plane Array) is the infrared detector with the most advanced technical performance, and is the core component of many practical infrared imaging systems, and is widely used in military and civilian fields. Infrared thermal imaging technology uses the temperature difference between the target and the surrounding background to extract relevant information s...

Claims

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Application Information

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IPC IPC(8): G06T5/00G06T7/00
Inventor 金伟其刘秀刘斌刘崇亮范永杰
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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