High precision localization for profiled extended object based on GHT

A high precision localization scheme for profiled extended objects based-on Generalized Hough Transform (GHT) is proposed. The proposed localization scheme utilizes the edge points’ gratitude orientations of profiled extended objects to build an R-table in frame t-1. When frame t is coming, we searc...

Full description

Saved in:
Bibliographic Details
Published in:Optik (Stuttgart) 2014-02, Vol.125 (3), p.1297-1302
Main Authors: Hu, Jinlong, Peng, Xianrong
Format: Article
Language:English
Subjects:
Arrays
Construction
Frames
GHT
High precision
Localization
Orientation
Performance evaluation
Position (location)
Profiled extended objects
Relaxation iteration
Stability
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A high precision localization scheme for profiled extended objects based-on Generalized Hough Transform (GHT) is proposed. The proposed localization scheme utilizes the edge points’ gratitude orientations of profiled extended objects to build an R-table in frame t-1. When frame t is coming, we search the R-table according to the pre-computed edge points’ gratitude orientations of profiled extended objects in current frame, generating an accumulator array. The coordination corresponding to the accumulator's peak value is regarded as coarse localization point in current frame. Then, a relaxation iteration method is proposed to refine the coarse localization point to obtain a sub-pixel localization point. Numerical experiments show that the localization scheme has following characteristics: high-precision and stability. Furthermore, we present the results of our work which involves investigation of the performance evaluation for the proposed localization scheme.
ISSN:0030-4026
1618-1336
DOI:10.1016/j.ijleo.2013.08.017