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描述了基于DSP芯片和USB接口芯片的成像处理系统的硬件和软件设计,实现了对128×128阵列的氮化镓基紫外日盲焦平面探测器输出信号的采集和处理,在PC端绘制优质景物图像的功能。并利用DSP芯片的高速数字信号处理性能和USB芯片的高速传输性能进行程序设计,对图像信号进行二维滤波提高系统成像质量,使用双缓冲堆提高系统的带宽。成像测试实验证明,成像处理系统可以正常进行信号采集,并在PC端上进行图像绘制,验证了所设计的成像处理系统能够正常工作,达到了设计要求;运用DSP和USB进行图像信号的二维滤波和双缓冲堆设计,成像处理系统的成像质量和系统带宽得到了较大的改善。
Describes the hardware and software design of the imaging processing system based on DSP chip and USB interface chip, realizes the acquisition and processing of the output signal of the GaN-based UV-based blind laser focal plane detector with 128 × 128 array, Scenery image features. The high-speed digital signal processing performance of DSP chip and the high-speed transmission performance of USB chip are used for program design. Two-dimensional filtering of the image signal is performed to improve the imaging quality of the system and the double buffer pile is used to increase the bandwidth of the system. Imaging test experiments show that the imaging processing system can be normal signal acquisition, and the PC-side image rendering to verify the design of the imaging processing system to work properly, to meet the design requirements; the use of DSP and USB for two-dimensional image signal Filtering and double-buffered heap design, image processing system, imaging quality and system bandwidth has been greatly improved.