Analog Signal Processing Approach for Coarse and Fine Depth Estimation

TL;DR

This paper proposes using analog signal processing as an augmentation to digital systems for faster, more efficient depth estimation in imaging, demonstrated through modified stereo algorithms and new architectures.

Contribution

It introduces a novel hybrid analog-digital approach for depth estimation, including modifications to stereo algorithms and new imaging architectures to reduce computation time.

Findings

Analog processing significantly reduces computation time.

Hybrid approach improves system efficiency.

Modified algorithms enhance depth estimation accuracy.

Abstract

Imaging and Image sensors is a field that is continuously evolving. There are new products coming into the market every day. Some of these have very severe Size, Weight and Power constraints whereas other devices have to handle very high computational loads. Some require both these conditions to be met simultaneously. Current imaging architectures and digital image processing solutions will not be able to meet these ever increasing demands. There is a need to develop novel imaging architectures and image processing solutions to address these requirements. In this work we propose analog signal processing as a solution to this problem. The analog processor is not suggested as a replacement to a digital processor but it will be used as an augmentation device which works in parallel with the digital processor, making the system faster and more efficient. In order to show the merits of analog processing two stereo correspondence algorithms are implemented. We propose novel modifications to the algorithms and new imaging architectures which, significantly reduces the computation time.