HOG-Dot: A Parallel Kernel-Based Gradient Extraction for Embedded Image Processing

Luca Maggiani,Cedric Bourrasset,Matteo Petracca,François Berry,Paolo Pagano,Claudio Salvadori

IEEE Signal Processing Letters（2015）

引用 6|浏览26

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摘要

In this letter, we propose HOG-Dot, a method for the direct computation of the polar image gradients coordinates from the pixels values. The proposed algorithm, to be used as the first step of the Histogram of Oriented Gradient (HOG) pipeline, approximates the exact gradient with its projection onto a versor chosen among the projection plane set. Instead of non linear computations, the HOG-Dot met...

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关键词

Approximation methods,Histograms,Table lookup,Signal processing algorithms,Approximation algorithms,Pipelines

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