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Image linear dynamic range compression method and system combining full image and partial image

A dynamic range compression and combination technology, applied in image enhancement, image data processing, instruments, etc., can solve the problem of loss of local detail information, and achieve the effect of good contrast and brightness, and good visual effect.

Active Publication Date: 2021-02-02
WUHAN GUIDE SENSMART TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the problem that the dynamic range compression algorithm in the prior art may cause the loss of local detail information

Method used

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  • Image linear dynamic range compression method and system combining full image and partial image
  • Image linear dynamic range compression method and system combining full image and partial image
  • Image linear dynamic range compression method and system combining full image and partial image

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Embodiment Construction

[0049] 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, not all, embodiments of the present invention. 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.

[0050] 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, rather than in...

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Abstract

The invention belongs to the technical field of digital image processing, and specifically provides an image linear dynamic range compression method and system combining full image and partial image. The original full image is processed by contrast and brightness, and the local ROI is processed by contrast and brightness, and then The processed full image and local ROI are linearly mapped to obtain an 8-bit image, and then superimposed to output the target image. This scheme converts the original 14-bit digital image into full image and local ROI image information, which not only maintains good contrast and brightness, has good visual effect, but also highlights local detail information, which is conducive to the human eye's recognition of local ROI image information. Further perception of image information.

Description

technical field [0001] The invention belongs to the technical field of digital image processing, and in particular relates to an image linear dynamic range compression method and system combining full image and partial image. Background technique [0002] ROI (region of interest) is the region of interest. In machine vision and image processing, the area to be processed is outlined in the form of a box, circle, ellipse, irregular polygon, etc. from the processed image, which is called the region of interest. [0003] With the rapid development of infrared technology, thermal imaging cameras are widely used in many fields of military and civilian use. In general, the image output by the infrared detector is a 14-bit digital signal, but the common display devices are all 8-bit display, and the gray scale range that the human eye is more sensitive to is only 128 gray levels, so it is necessary to analyze the infrared digital signal Perform dynamic range compression processing...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/00
Inventor 林道庆田鹏崔昌浩黄晟王鹏周汉林
Owner WUHAN GUIDE SENSMART TECH CO LTD