Method for adaptive dynamic range transformation of infrared image

A dynamic range and infrared image technology, applied in the field of infrared thermal imaging, can solve the problems of poor adaptability of infrared image thermal imaging, etc., and achieve the effect of reducing gray contrast, suppressing noise amplification, strong contrast and details

Active Publication Date: 2019-03-26
WUHAN GUIDE SENSMART TECH CO LTD
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Problems solved by technology

[0006] The purpose of the invention is to overcome the problem of poor adaptability of infrared image thermal imaging in the prior art

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  • Method for adaptive dynamic range transformation of infrared image
  • Method for adaptive dynamic range transformation of infrared image
  • Method for adaptive dynamic range transformation of infrared image

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[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0028] In describing the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", The orientations or positional relationships indicated by "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, ...

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Abstract

The invention belongs to the technical field of infrared thermal imaging, A method for adaptive dynamic range transformation of infrared image is provided in detail. According to that histogram equalization process of the original data, a suitable starting and ending range of the data is determined, linear mapping and platform histogram equalization map are respectively carried out on the data within the range, and the gray level out of the range is truncated. It not only effectively solves the problem that the gray contrast is reduced and the image details are easily lost when the traditionallinear mapping method is used in image processing, At the same time, the problem of noise enhancement in processing infrared image with large temperature difference can also be guaranteed, which makes the scene imaging effect always keep strong contrast and detail, and suppresses the amplification of noise.

Description

technical field [0001] The invention belongs to the technical field of infrared thermal imaging, and in particular relates to an adaptive infrared image dynamic range conversion method. Background technique [0002] When an infrared thermal imaging system displays an infrared image, it generally needs to convert the data format with a dynamic range of 16bit or 14bit into an 8bit data format. The traditional infrared image dynamic range conversion methods mainly include linear dynamic range transformation and non-linear platform histogram Equalization dynamic range transformation 2 ways. [0003] Linear dimming is mapped according to a consistent proportional relationship. If the dynamic range of the original data is large, the grayscale distance between high temperature and low temperature is large, and there is no data to map between high and low temperature excessive grayscale intervals, the target grayscale will be wasted. In the interval, the high and low temperature ar...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00G06T5/40
CPCG06T5/40G06T2207/10048G06T5/90
Inventor 林道庆黄晟王鹏田鹏崔昌浩周汉林
Owner WUHAN GUIDE SENSMART TECH CO LTD
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