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Journal Article
Implementation of Real-Time Post-Processing for High-Quality Stereo Vision
- Authors
- Seungmin Choi, Jae-Chan Jeong, Jiho Chang, Hochul Shin, Eul-Gyoon Lim, Jae Il Cho, Daehwan Hwang
- Issue Date
- 2015-08
- Citation
- ETRI Journal, v.37, no.4, pp.752-765
- ISSN
- 1225-6463
- Publisher
- 한국전자통신연구원 (ETRI)
- Language
- English
- Type
- Journal Article
- Abstract
- We propose a novel post-processing algorithm and its very-large-scale integration architecture that simultaneously uses the passive and active stereo vision information to improve the reliability of the threedimensional disparity in a hybrid stereo vision system. The proposed architecture consists of four steps-leftright consistency checking, semi-2D hole filling, a tiny adaptive variance checking, and a 2D weighted median filter. The experimental results show that the error rate of the proposed algorithm (5.77%) is less than that of a raw disparity (10.12%) for a real-world camera image having a 1,280 × 720 resolution and maximum disparity of 256. Moreover, for the famous Middlebury stereo image sets, the proposed algorithm's error rate (8.30%) is also less than that of the raw disparity (13.7%). The proposed architecture is implemented on a single commercial fieldprogrammable gate array using only 13.01% of slice resources, which achieves a rate of 60 fps for 1,280 × 720 stereo images with a disparity range of 256.
- KSP Keywords
- Active stereo vision, Camera Image, Consistency checking, Field Programmable Gate Arrays(FPGA), High-quality, Hole filling, Hybrid stereo vision, Integration architecture, Real-Time, Real-world, Stereo Vision System