Title: Hardware implementation of stereo vision algorithms for depth estimation

Authors: Nitish Wadne; Arti Bang

Addresses: Electronics and Telecommunication Engineering, Vishwakarma Institute of Information Technology, Pune Maharashtra, 411048, India ' Electronics and Telecommunication Engineering, Vishwakarma Institute of Information Technology, Pune Maharashtra, 411048, India

Abstract: Depth estimation has applications like robot navigation, advance driver assistance systems, 3D movies etc. Depth is represented in terms of disparity map which can be generated using various stereo correspondence algorithms. This paper presents an implementation of semi global block matching algorithm on raspberry pi to estimate the depth from the camera. The algorithm computes the disparity using block wise matching and smoothness constraint. The proposed algorithm is compared with SAD algorithm on personal computer as well as on raspberry pi. The algorithm is also further, evaluated on the standard dataset. The project aim is to detect people in an image and estimate their depth from the camera. The real time implementation of the proposed algorithm uses block size of 21 × 21 for images which has resolution of 1280 × 720 P. The algorithm estimates depth with an accuracy of 95%. The system also provides faster processing time to the proposed algorithm.

Keywords: computer vision; depth estimation; raspberry pi; semi-global block matching.

DOI: 10.1504/IJIM.2018.096284

International Journal of Image Mining, 2018 Vol.3 No.2, pp.91 - 105

Received: 09 Nov 2017
Accepted: 03 Apr 2018
Published online: 22 Nov 2018 *

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