【摘要】：無人機測繪是遙感領域用于地形測繪的新興技術，其具有機動靈活、高效快速、精細準確、成本較低的特點。近年來，隨著通信技術和傳感器技術的不斷發(fā)展，無人機測繪系統(tǒng)也日漸成熟，，在測繪領域發(fā)揮著愈加重要的作用。但隨著測繪圖像分辨率提高，測繪任務增多，測繪圖像的數(shù)據(jù)量在不斷擴大。因此，高效可靠的圖像壓縮存儲系統(tǒng)的研制具有至關重要的現(xiàn)實意義。 本文針對某測繪無人機中測繪圖像壓縮存儲系統(tǒng)的研制任務要求，以FPGA為主要控制器件，完成了整個圖像壓縮存儲系統(tǒng)的設計。文中首先介紹了該系統(tǒng)所采用的圖像壓縮算法(SPIHT算法)和存儲設備(CF卡)，并將算法壓縮存儲性能與其他算法以及將設備與其他存儲設備進行了簡單對比。然后，在此基礎上實現(xiàn)了該系統(tǒng)的FPGA邏輯設計，并給出了系統(tǒng)的測試結果。該系統(tǒng)功能和性能均滿足任務要求，現(xiàn)已應用于相關的機載平臺。
[Abstract]:Unmanned aerial vehicle (UAV) mapping is a new technology in the field of remote sensing, which has the characteristics of flexibility, high efficiency, high speed, precision and low cost. In recent years, with the development of communication technology and sensor technology, UAV surveying and mapping system is becoming more and more mature, which plays an increasingly important role in the field of surveying and mapping. However, with the improvement of the resolution of surveying and mapping image and the increase of surveying and mapping tasks, the amount of surveying and mapping image data is expanding. Therefore, the development of efficient and reliable image compression storage system is of vital practical significance. According to the research and development task of the image compression storage system in a surveying and mapping UAV, the design of the whole image compression storage system is completed with FPGA as the main controller. In this paper, the image compression algorithm (SPIHT algorithm) and storage device (CF card) used in the system are introduced, and the compression storage performance of the algorithm is compared with other algorithms, and the device is compared with other storage devices. Then, the FPGA logic design of the system is realized, and the test results are given. The function and performance of the system meet the requirements of the mission, and have been applied to the relevant airborne platform.
【學位授予單位】：西安電子科技大學
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：P231;TP391.41

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本文編號：2317208