Video stream compression without A/D conversion using Analog Multilayer Perceptron [articol]

Abstract

This work proposes a multilayer perceptron (MLP) method to perform direct mapping from an analog frame block into a vector index, implement vector quantization (VQ) without the need for carrying out first an analog-to-digital (A/D) conversion of each analog sample. The design focuses on an analog hardware implementation and it is based on observing that the use of careful binary index assignment causes hyperplanes associated with the formation of the same bit at the MLP output to have similar spatial orientation. The results show that MLPs can be implement with less computational complexity than Kohonen self-organizing map (KSOM).