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Block-matching and 3D-filtering(BM3D) is a state of the art denoising algorithm for image/video,which takes full advantages of the spatial correlation and the temporal correlation of the video. The algorithm performance comes at the price of more similar blocks finding and filtering which bring high computation and memory access. Area, memory bandwidth and computation are the major bottlenecks to design a feasible architecture because of large frame size and search range. In this paper, we introduce a novel structure to increase data reuse rate and reduce the internal static-random-access-memory(SRAM) memory. Our target is to design a phase alternating line(PAL) or real-time processing chip of BM3 D. We propose an application specific integrated circuit(ASIC) architecture of BM3 D for a 720 × 576 BT656 PAL format. The feature of the chip is with 100 MHz system frequency and a 166-MHz 32-bit double data rate(DDR). When noise is σ = 25, we successfully realize real-time denoising and achieve about 10 d B peak signal to noise ratio(PSNR) advance just by one iteration of the BM3 D algorithm. 相似文献
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介绍应用89C51单片机实用电动模型汽车自动往返的控制系统,该系统利用反射式光电检测器采集数据,通过软件完成对电动模型汽车在不同路段的行驶速度的实时控制,并用数码管显示行程和时间。 相似文献
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给出了立体车库遥控接收信号变换电路,该电路的输出用作PLC的中断源。重点对电路功能的实现和可靠性进行了分析。对影响可靠性的几个关键元件和结点进行了详细分析计算。人为强干扰试验和实际运行证明该电路的性能良好。 相似文献
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采用MOSFET构成一对双向导电型电力电子开关,对交流电进行斩波控制,形成交流Buck—Boost电路。分析了该电路负载电压和电源电压之间的数量关系,介绍了一种适合本电路的电子开关系统。 相似文献