2,550 research outputs found

    Combined wavelet domain and motion compensated filtering compliant with video codecs

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    In this paper, we introduce the idea of using motion estimation resources from a video codec for video denoising. This is not straightforward because the motion estimators aimed for video compression and coding, tolerate errors in the estimated motion field and hence are not directly applicable to video denoising. To solve this problem, we propose a novel motion field filtering step that refines the accuracy of the motion estimates to a degree that is required for denoising. We illustrate the use of the proposed motion estimation method within a wavelet-based video denoising scheme. The resulting video denoising method is of low-complexity and receives comparable results with respect to the latest video denoising methods

    Real-time Analog Pixel-to-pixel Dynamic Frame Differencing with Memristive Sensing Circuits

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    In this paper, we propose an analog pixel differencing circuit for differentiating pixels between frames directly from CMOS pixels. The analog information processing at sensor is a topic of growing appeal to develop edge AI devices. The proposed circuit is integrated into a pixel-parallel and pixel-column architectures. The proposed system is design using TSMC 180nm180nm CMOS technology. The power dissipation of the proposed circuit is 96.64mW96.64mW, and on-chip ares is 531.66μm2531.66 \mu m^2. The architectures are tested for moving object detection application.Comment: IEEE SENSORS 201
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