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Infrared image dynamic compression and detail enhancement method, storage medium and device

A dynamic compression and infrared image technology, applied in the field of image processing, can solve the problems of performance dependence on layered filters and fixed parameter values ​​that cannot be well applied to infrared images, so as to suppress gradient reversal, improve practicability, and reduce background noise effect

Pending Publication Date: 2022-05-13
YUNNAN NORTH OPTICAL & ELECTRON INSTR
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Problems solved by technology

However, the performance of one class of methods depends on layered filters, and the generally applicable fixed parameter values ​​cannot be well applied to infrared images in different scenarios.

Method used

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  • Infrared image dynamic compression and detail enhancement method, storage medium and device
  • Infrared image dynamic compression and detail enhancement method, storage medium and device
  • Infrared image dynamic compression and detail enhancement method, storage medium and device

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Embodiment approach

[0083] In the above embodiment, an implementation manner of the step "perform image enhancement on the detail layer according to the gain coefficient representing the overall image clarity" is as follows:

[0084] The adaptive parameter ε and local variance calculated during the image layering process Mapped to the gain coefficient representing the overall sharpness of the image, as a mask for suppressing image noise, the mapping relationship is as follows:

[0085]

[0086] In the formula, g(i, j) represents the detail gain coefficient corresponding to the pixel point (i, j), and α represents the normalized adjustment factor of ε, which is close to the value of ε obtained from the image in the standard-definition scene, and g max and g min Respectively, the high and low gain value coefficients of the image represent the gain range of the image. represents the overall gain adjustment parameter of the image, Indicates the detail texture richness of each region of the i...

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Abstract

The invention discloses an infrared image dynamic compression and detail enhancement method, a storage medium and an infrared image dynamic compression and detail enhancement device. The method comprises the following steps: dividing an original image into a base layer and a detail layer by using a parameter-adaptive guide filter; the adaptive parameter of the guide filter is calculated according to a local variance histogram of the to-be-processed original image, and the local variance histogram of the original image is obtained by counting the local variance of the to-be-processed original image; performing dynamic range compression on the base layer; performing image enhancement on the detail layer according to a gain coefficient representing the overall definition of the image; the gain coefficient is obtained according to the adaptive parameter; and combining the base layer image after dynamic range compression with the detail enhanced image to obtain a final dynamic range compression image. According to the invention, adaptive parameters are introduced, so that the filter is suitable for different infrared images. In the enhancement of the detail layer, a gain coefficient representing the overall definition of the image is calculated according to the adaptive parameters so as to improve the detail performance in the image.

Description

technical field [0001] The present invention relates to the field of image processing, in particular to an infrared image dynamic compression and detail enhancement method, storage medium and device, in particular to a parameter adaptive infrared image dynamic range compression and detail enhancement method, storage medium and device. Background technique [0002] Due to the wide range of the actual temperature of the object, the infrared band is much wider than the visible light band, and the information that the infrared detector can receive is much richer than that of the visible light imaging, and the infrared image data output by it usually has a higher bit width (10bit-16bit ), far higher than the commonly used standard display (8bit), and far beyond the human eye’s ability to distinguish grayscale images. Therefore, when transmitting the infrared image from the detector to the display, it is usually necessary to compress the dynamic range to reduce the infrared The bi...

Claims

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Application Information

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IPC IPC(8): G06T5/00G06T5/20G06T5/40H04N19/172H04N19/42H04N19/80
CPCG06T5/20G06T5/40H04N19/172H04N19/42H04N19/80G06T2207/20004G06T2207/20208G06T5/94G06T5/70
Inventor 欧阳慧明周俊洁史云胜李广周永康陈若童成然赵德利曾邦泽朱尤攀胡荣富陈宇
Owner YUNNAN NORTH OPTICAL & ELECTRON INSTR
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