針對靶場圖像增強算法的研究與實現(xiàn)
[Abstract]:In order to adapt to the rapid development of the new weapon and equipment, the modern range is an important place to identify the effective means of the weapon and equipment and provide the key test data. It is necessary to speed up the visualization, information and modernization of the test scene. Optical measuring equipment is an important part of range identification and testing, in which the photoelectric theodolite (PT) is an important optical measuring device for rapid capture, precision tracking and real-time detection of image transmission. In the range-range photoelectric theodolite, two kinds of heterologous imaging sensors are used to capture the ground targets or air-to-air targets, which are visible and infrared imaging systems, respectively. The visible-light imaging system can capture high-resolution and clear target information, and perform the interpretation of the motion track and the attitude parameter, thereby providing rich and reliable test data information to the ground command station. However, visible light imaging systems are susceptible to natural weather factors such as atmospheric jitter, rain, snow, and the like. If the moving target is blocked by an object such as a cigarette, a cloud, or the like, the visible light imaging system cannot complete the capturing operation, and the final target is lost; and if the difference between the moving target and the sky is small, the target position cannot be distinguished. The presence of these problems leads to the inability of the visible-light imaging system to capture an image that is in accordance with the range-to-motion target precise measurement requirements. In recent years, the infrared technology has the characteristics of strong anti-interference, strong penetrating power, long detection distance and all-weather work, and has gradually become the core technology of the research and development of all kinds of military equipment. The infrared imaging system has the advantages that the spatial resolution of the infrared image is much lower than that of the visible light image due to the diffraction characteristics and the manufacturing process of the optical system of the infrared imaging system, the target pixel point is mainly concentrated in a small-range gray-scale interval, the dynamic range of the image is narrow, the contrast is low, and the edge is blurred; and when the problems of the external environment interference and the imperfect of the imaging system are existed, the noise interference is caused, the signal-to-noise ratio of the target is low, and the target pixel point is easily flooded in the background; The infrared image is imaged according to the self-radiation characteristic, and the visual effect of the infrared image is far less than that of the visible light image and is easier to observe by the human eye. Therefore, the improvement of the range image quality is the key problem to improve the performance of the range-range photoelectric theodolite system. In this paper, the research of image enhancement algorithm for range image features is discussed in the light of the requirements of the research and defense military project. In order to improve the contrast, signal-to-noise ratio and visual effect of the infrared image of the range, the present situation and progress of the image enhancement technology at home and abroad are studied deeply, and the problems of low contrast and edge ambiguity are discussed. The invention provides a novel statistical mode adaptive platform histogram equalization enhancement method and a log membership degree fuzzy enhancement method based on a fuzzy set theory, aiming at the problem of low signal-to-noise ratio and low signal-to-noise ratio in the presence of noise interference, in ord to improve that visual effect of the image and meet the requirement of human visual perception, An image fusion enhancement algorithm based on fuzzy set theory and statistical property is proposed. The algorithm combines the characteristics of the multi-sensor to an image to be transmitted to the command station as the basis for leadership decision-making. At the same time, the hardware platform of the image enhancement system based on the FPGA and the DSP processor is set, and a large number of experimental verification is carried out on the enhanced algorithm after the transplantation, and the experimental results show that the proposed image enhancement algorithm is real-time and effective.
【學位授予單位】:中國科學院研究生院(長春光學精密機械與物理研究所)
【學位級別】:博士
【學位授予年份】:2016
【分類號】:TP391.41
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