Publication

Text-pose estimation in 3D using edge-direction distributions

Bulacu, M. L. & Schomaker, L. R. B., 2005, Proceedings of the International Conference on Image Analysis and Recognition (ICIAR 2005). Kamel, M. & Campilho, A. (eds.). BERLIN: Springer, Vol. LNCS 3656. p. 625-634 10 p. (Lecture Notes in Computer Science; vol. 3656).

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

This paper presents a method for estimating the orientation of planar text surfaces using the edge-direction distribution (EDD) extracted from the image as input to a neural network. We consider canonical rotations and we developed a mathematical model to analyze how the EDD changes with the rotation angle under orthographic projection. In order to improve performance and solve quadrant ambiguities, we adopt an active-vision approach by considering a pair of images (instead of only one) with a slight rotation difference between them. We then use the difference between the two EDDs as input to the network. Starting with camera-captured front-parallel images with text, we apply single-axis synthetic rotations to verify the validity of the EDD transform model and to train and test the network. The presented text-pose estimation method is intended to provide navigation guidance to a mobile robot capable of reading the textual content encountered in its environment.

Original languageEnglish
Title of host publicationProceedings of the International Conference on Image Analysis and Recognition (ICIAR 2005)
EditorsM. Kamel, A. Campilho
Place of PublicationBERLIN
PublisherSpringer
Pages625-634
Number of pages10
VolumeLNCS 3656
ISBN (Print)3-540-29069-9
Publication statusPublished - 2005
Event2nd International Conference on Image Analysis and Recognition - , Canada
Duration: 28-Sep-200530-Sep-2005

Publication series

NameLecture Notes in Computer Science
PublisherSPRINGER-VERLAG BERLIN
Volume3656
ISSN (Print)0302-9743

Other

Other2nd International Conference on Image Analysis and Recognition
CountryCanada
Period28/09/200530/09/2005

Event

2nd International Conference on Image Analysis and Recognition

28/09/200530/09/2005

Canada

Event: Other

    Keywords

  • SHAPE

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