Stairways detection based on approach evaluation and vertical vanishing point

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dc.contributor.authorKhaliluzzaman, Md.
dc.contributor.authorDeb, Kaushik
dc.date.accessioned2022-07-04T03:45:13Z
dc.date.available2022-07-04T03:45:13Z
dc.date.issued2018
dc.descriptionVol. 8, No. 2, 2018en_US
dc.description.abstractStair region detection and distance estimation from a stair image are challenging activities to support visually impaired navigation safely in unknown environments. In this paper, a framework is proposed for detecting stair region from a stair image utilising some natural and unique property of a stair. One unique property of them is, every stair step’s beginning and ending horizontal edge point intersects with two vertical edge points creating three connected point (TCP). The TCPs are used to validate the stair edge segments and calculate the vertical vanishing point to justify the stair edges. This justification ensures that validated edge segments are arranged in an increasing parallel order which is the other unique property of a stair. These increasing edge segments are verified by utilising the y coordinate value of the vanishing point and the detection of stair candidate region is confirmed by these properties. In addition, the triangular similarity is used for distance estimation from camera to stair. The proposed framework is tested using various stair images under a variety of conditions and results are presented to demonstrate the efficiency and effectiveness.en_US
dc.identifier.urihttp://dspace.iiuc.ac.bd:8080/xmlui/handle/123456789/3400
dc.language.isoenen_US
dc.publisherInt. J. Computational Vision and Roboticsen_US
dc.subjectAutonomous stair climbing navigationen_US
dc.subjectAlarm systemen_US
dc.subjectIlluminationen_US
dc.subjectVanishing pointen_US
dc.subjectThree connected pointen_US
dc.subjectTCPen_US
dc.subjecttriangular similarityen_US
dc.subjectGabor filteren_US
dc.titleStairways detection based on approach evaluation and vertical vanishing pointen_US
dc.typeArticleen_US

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