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Research questionHow can image sensors encode local edge-motion direction in-pixel while preserving compactness, fill factor, and low data movement?Conventional image sensors often transfer multi-bit frames for external processing even when an application primarily needs local boundary motion. Encoding this information within the pixel could reduce the representation and data transferred, but added circuitry can compete with photodiode area and pixel density.
Computer Vision
Image & Video Processing
Technology
Latest papersRecent research connected to this question, newest first.STEMPix: A Phase-Transition-Material-Based Pixel Sensor for Resolving Edge-Movement DirectionThe source concerns a CMOS-compatible two-tier image-sensor array that combines temporal pixel changes with neighboring-pixel spatial edges to produce a 3-bit local edge-direction code. Evidence is limited to HSPICE transient simulations, including estimated pixel pitch, geometric fill factor, and switching energy; the design also supports global-shutter capture and dynamic thresholding.research paper · Sep 3, 2026
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