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Method, device and system for objectively evaluating pneumatic optical image quality based on feature fusion

An objective evaluation method, aero-optical technology, applied in image enhancement, image data processing, space vehicle guidance devices, etc., can solve problems not involved in aero-optical image quality evaluation

Inactive Publication Date: 2012-08-08
SHANGHAI DIANJI UNIV
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Most of the existing technologies are aimed at compressing damaged images and noise-degraded images, and do not involve the quality evaluation of aero-optical images

Method used

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  • Method, device and system for objectively evaluating pneumatic optical image quality based on feature fusion
  • Method, device and system for objectively evaluating pneumatic optical image quality based on feature fusion
  • Method, device and system for objectively evaluating pneumatic optical image quality based on feature fusion

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specific Embodiment

[0087] The present invention also provides a specific embodiment as follows:

[0088] The high-temperature black body radiation source forms the required circular target, small triangular target or four-strip target, and the target is calibrated to infinity by the collimator light pipe. The infrared target radiation enters the arc wind tunnel through the incident ZnS window, is disturbed by the incoming flow, and then is received by the infrared thermal imager through the Ge material exit window. Infrared target generator, which is composed of high-temperature black body, infrared collimation optical system, target target disk and control combination, is used to simulate and generate infrared target signals. In the embodiment of the present invention, the infrared wind tunnel image sequence is used to collect three sequences of a circular target, a small triangular target and four targets. Select 3 frames (including still frames) from each image sequence, such as figure 2 S...

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Abstract

The invention discloses a method, a device and a system for objectively evaluating the quality of a pneumatic optical image based on feature fusion. The method comprises the steps: acquiring the pneumatic optical image and calculating fuzzy factors, deviation factors and active attenuation factors. The objective evaluation method based on factors feature fusion can effectively avoid complexity and time consumption of a subjective evaluation method, overcomes the defects of the traditional objective evaluation method, has the advantages of simple, fast and reliable calculation, good robustnessand strong real-time performance, can be used for carrying out objective evaluation on the quality of the pneumatic optical image, assisting the property comparison of an image restoring and correcting method of a high-speed aircraft, and providing criteria for the frame selection of an iterative restoration algorithm, and iterative stopping operation.

Description

technical field [0001] The invention relates to the field of aero-optics, in particular to an objective evaluation method, device and system for aero-optical image quality based on feature fusion. Background technique [0002] When a high-speed aircraft equipped with an optical imaging detection and guidance system flies in the atmosphere, a complex flow field will be formed between the optical hood and the incoming flow, which will cause aerodynamic heat, thermal radiation and image transmission interference to the optical imaging detection system, thereby causing the target The shifting, shaking and blurring of the image, this effect is called aero-optical effect. The aero-optic effect usually causes the target image to be blurred, and has multiple effects on the optical detection and guidance system: reducing the signal-to-noise ratio of target detection, reducing the target detection distance; reducing the probability of target detection and recognition, and reducing the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/00B64G1/24
Inventor 黎明
Owner SHANGHAI DIANJI UNIV
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