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A High Quality Display Method of Infrared High Bit Width Digital Image

A digital image and display method technology, applied in image communication, color TV parts, TV system parts, etc., to achieve the effects of compressed dynamic range, good edge characteristics, and good visual effects

Active Publication Date: 2021-08-13
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Can be widely used in various infrared and high bit width image detection systems

Method used

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  • A High Quality Display Method of Infrared High Bit Width Digital Image
  • A High Quality Display Method of Infrared High Bit Width Digital Image
  • A High Quality Display Method of Infrared High Bit Width Digital Image

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Embodiment Construction

[0039] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0040] A high-quality display method of an infrared high-bit-width digital image of the present invention specifically comprises the following steps:

[0041] Step 1: Gamma transformation guided by EOG gradient energy function

[0042] Simple linear mapping is only suitable for the case where the original high-bit-width image has relatively uniform grayscale distribution. For images with relatively concentrated grayscale, the linear mapping result will appear darker or brighter overall. Gamma correction is beneficial to improve the contrast of the image. A single Gamma correction may lead to the weakening and loss of details in the local area of ​​the image, so the setting is darker. 1 , Moderate S 2 , brighter S 3 Three intervals, each interval sets multiple discrete gamma values ​​to adjust the image to multiple brightness levels. In the ...

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Abstract

The invention discloses a high-quality display method for infrared high-bit-width digital images, which belongs to the field of image processing and infrared imaging. The display method includes four steps: step S1: the EOG gradient energy function guides the gamma correction to process the normalized original image to generate multiple images with multiple brightness; step S2: conduct multi-scale guided filters on the multiple images respectively Layering and detail enhancement fusion; step S3: merging the three enhanced multi-brightness images; step S4: performing bad pixel filtering and dynamic range adjustment on the fused image. The test of high-bit-width digital images with different scene characteristics proves that this method can enhance image details, increase contrast and compress dynamic range on the basis of maintaining the original hierarchical structure of various scene images. The output image has a good visual effect, which is conducive to human observation and other follow-up work. Suitable for high-quality display of high-bit-width digital images on ordinary monitors.

Description

technical field [0001] The invention belongs to the field of image processing and infrared imaging, in particular to a high-quality display method of infrared high-bit-width digital images, which is a high-quality display of infrared high-bit-width digital images based on EOG-guided Gamma transform multi-scale filters and image fusion method. Background technique [0002] With the improvement of engineering technology, infrared equipment with high dynamic range has been widely used in engineering. These devices have higher levels of sensitivity to detect subtler differences in heat, resulting in images with more gray levels per pixel. At present, the common high-bit-width images are 10bit, 12bit, 14bit, and 16bit, while ordinary displays are only 8bit, and each pixel has fewer gray levels. If a simple linear compression is performed on the image recently, it will cause a lot of loss of details in the high-bit-width image, and the visual effect is not good, which is not con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/355H04N5/33
CPCH04N5/33H04N25/57
Inventor 陈斐然蔡敬菊张建林彭先蓉徐智勇魏宇星
Owner INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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