Monodeep Kar, A. Agarwal, S. Hsu, D. Moloney, Gregory K. Chen, Raghavan Kumar, H. Sumbul, Phil C. Knag, M. Anders, Himanshu Kaul, Jonathan Byrne, Luca Sarti, R. Krishnamurthy, V. De
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A Ray-Casting Accelerator in 10nm CMOS for Efficient 3D Scene Reconstruction in Edge Robotics and Augmented Reality Applications
A ray-casting accelerator in 10nm CMOS simultaneously casts multiple rays in spatial proximity to exploit voxel data-locality, featuring a near-memory search for voxel address overlaps and opportunistic approximate trilinear interpolation for energy savings. Measurements demonstrate ray-casting of 320×240 depth images with an average latency of 23.2ms/frame, while consuming 32.7pJ energy per ray-step and achieving a maximum energy-efficiency of 115.3 giga raysteps/W.
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