제목

Outdoor Travel-Aid Using Bird-eye View Virtual Camera

저자명 Qing Lin, Hernsoo Hahn, Youngjoon Han

초 록

This paper presents a travel-aid system for sight-impaired pedestrians in an outdoor  environment. Unlike many existing travel-aid systems that rely on stereo-vision, the proposed system aims to detect generic obstacles in a cluttered road environment by using just single camera attached to user’s body. To achieve this goal, the original image is re-sampled and  mapped to a bird-eye view virtual plane, on which background edges are sub-sampled while obstacle edges are oversampled. Morphology filters with connected component analysis are
used to enhance obstacle edges as edge-blobs with larger size, whereas sparse edges from background are filtered out. Based on the identified obstacles, safe walking areas are estimated by calculating a polar edge histogram. The algorithm is tested in different sidewalk scenes with complex pavements, and its efficiency has been confirmed.

Keyword travel-aids; monocular vision; Bird-eye view re-sampling; polar edge histogram
원문 수록처The Fourth International Conference on Smart IT Applications(SITA 2012), Technical Session 802
자료유형 학술대회자료