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Infrared image optimization processing method based on spatial domain hybrid operation

An infrared image and mixed computing technology, applied in image data processing, image enhancement, image analysis, etc., can solve the problems of unfavorable real-time circuit processing, large processing data bit width, and large processing scale, so as to improve the utilization rate of display grayscale and The effect of improving the overall clarity of the image, improving the display contrast, and improving the image clarity

Pending Publication Date: 2020-11-24
浙江黑卡电气有限公司
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Problems solved by technology

The disadvantages of this infrared image processing flow are: the processing data bit is wide and the processing scale is large, which is not conducive to real-time circuit processing; in addition, the enhanced details will be lost in the dynamic range compression, the image is dark, and the contrast is low

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  • Infrared image optimization processing method based on spatial domain hybrid operation
  • Infrared image optimization processing method based on spatial domain hybrid operation
  • Infrared image optimization processing method based on spatial domain hybrid operation

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Embodiment Construction

[0069] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0070] Such as Figure 1-3 As shown, an infrared image optimization processing method based on spatial domain hybrid operation includes the following steps:

[0071] (1) Utilize the dynamic range compression method of enhancing the details to compress the large dynamic infrared image I wdr Compression mapping to 8-bit grayscale image I grey ; The calculation steps are as follows:

[0072] (A) Statistically input the histogram of the AD value of the infrared image; statistically input the gray level X of the AD value of the infrared image k The number of occurrences, denoted as H(X k ). Where k is the index number, k=0, 1, 2, ..., L-1, X k Indicates the kth gray level of...

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Abstract

The invention belongs to the technical field of infrared image processing, and particularly discloses an infrared image optimization processing method based on spatial domain hybrid operation, which comprises the following steps: (1) compressing and mapping a large dynamic infrared image Iwdr to an 8-bit grayscale image Igrey by using a detail-enhanced dynamic range compression method; (2) performing smooth filtering on the Igrey to calculate a basic image Ibs; (3) extracting an image detail Idt from the difference between the Igrey and the Ibs; (4) calculating an image depth factor depth forIgrey edge detection; (5) calculating a detail enhanced image Idt _ enh according to the image detail Idt, the image depth factor depth, the image detail gain Gdt and the grayscale image Igrey; (6) fusing the detail enhanced image Idt _ enh and the Igrey according to an enhancement scale factor Renh to output a fused image Ifuse; and (7) performing edge-preserving and noise-filtering processing onthe fused image Ifuse, and outputting an optimized image Iopt. According to the method, the main interval gray scale number can be increased, the transition interval gray scale number is reduced, noise is suppressed, details can be enhanced, and image contrast and definition are improved.

Description

technical field [0001] The invention belongs to the technical field of infrared image processing, and relates to a method for optimizing the definition of infrared images through spatial domain hybrid operation. Background technique [0002] In the application scene of infrared thermal imaging, when low temperature and high temperature objects exist at the same time, the overall dynamic range from the lowest temperature to the highest temperature of the thermal radiation is relatively large, but the temperature distribution in the local area of ​​the object is relatively moderate, and the temperature difference is generally relatively small. In order not to lose the small changes of the temperature signal and take into account the large dynamic range, the high-performance infrared imaging system usually uses 14-bit or higher A / D to sample the output signal of the infrared detector, so as to preserve the detailed information in the scene to the greatest extent. Since the disp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00G06T5/40
CPCG06T5/40G06T2207/10048G06T5/70
Inventor 陈瑛
Owner 浙江黑卡电气有限公司
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