【作者】 邹尔博；

【导师】 刘德明；

【作者基本信息】 华中科技大学 ， 光学工程， 2004， 硕士

【摘要】 在现代光电探测领域中,对实时图像的检测一直处于非常重要的地位,并在图像处理系统中得到了广泛的应用,如电视制导系统、医用电子内窥镜和银行、超市用电视监视系统等。但应用超广角镜头的成像系统在提供大的成像范围的同时,也带来了严重的图像畸变,使得检测目标难以辨认或辨认不准确,特别是对带有短焦距镜头的180o超广角系统,畸变尤其严重。因此为了准确还原原始图像,需要利用数字图像处理技术对畸变图像进行校正。本文根据超广角系统成像的特点,选择了合适的图像畸变校正算法,设计了基于DSP硬件系统的算法实现方案,完成了对畸变图像的校正处理;实现了DSP硬件系统与PC机PCI总线的通信。主要完成了以下工作: DSP系统硬件板设计计算机PCI总线和DSP的HPI接口数据交换的实现超广角成像系统图像畸变校正算法模型设计DSP算法设计和优化DSP系统的自举数字图像处理技术在实际应用中的主要困难在于数字图像的数据量非常大,实时处理要求计算速度极高。本文设计的图像处理系统硬件板充分利用了数字信号处理器的优点,把超广角成像系统的畸变校正算法全部交给DSP硬件处理,并将还原后的图像数据经过PCI总线送往计算机进行后续处理,也可以直接显示。更多还原

【Abstract】 In modern opto-electronics detection field, the real-time image detection technique is very important, it is widely used in many practical image processing systems. Such as TV control and guide system, electronic endoscope in iatrical, monitor system in supermarket and so on. However in most of the applications, image distortion will be brought in due to the using of wide-angle lens in the image processing system, especially in systems using 180o wide-angel short focus lens. While the using of wide-angle lens achieves a wide imaging range, it also leads to serious image distortion which makes the imaging identification of objects very hard. So image processing systems must use digital imaging technic to revert the distortion image. This article use an appropriate arithmetic base on the characteristic of the wide-angel lens to revert the distortion image , and achive the revert image by the image processing system using DSP as kernel. The system also achieve the communication between DSP and PCI to transfer the image data. The key point of the system contains:(1)hardware design base on the dsp;(2)Communication between DSP and PCI to transfer the image data;(3)Image distortion revert arithmetic model of the wide-angel lens;(4)Optimizing the image distortion revert arithmetic;(5)Bootloader design of the system The major problem of the digital imaging processing technology is that the real-time processing of the image data requires very high operation speed. By utilizing most of DSP’s merits, the image processing system introduced in this article implements completely hardware arithmetic which greatly increased the efficiency of the image processing course. Through the PCI interface, the processed image will be transfered to the computer to be displayed simultaneity or be disposed later..更多还原