Recognition using visual phrases

In this paper we introduce visual phrases, complex visual composites like "a person riding a horse". Visual phrases often display significantly reduced visual complexity compared to their component objects, because the appearance of those objects can change profoundly when they participate...

Full description

Saved in:
Bibliographic Details
Main Authors: Sadeghi, M. A., Farhadi, A.
Format: Conference Proceeding
Language:English
Subjects:
Bicycles
Decoding
Deformable models
Detectors
Object recognition
Training
Visualization
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this paper we introduce visual phrases, complex visual composites like "a person riding a horse". Visual phrases often display significantly reduced visual complexity compared to their component objects, because the appearance of those objects can change profoundly when they participate in relations. We introduce a dataset suitable for phrasal recognition that uses familiar PASCAL object categories, and demonstrate significant experimental gains resulting from exploiting visual phrases. We show that a visual phrase detector significantly outperforms a baseline which detects component objects and reasons about relations, even though visual phrase training sets tend to be smaller than those for objects. We argue that any multi-class detection system must decode detector outputs to produce final results; this is usually done with non-maximum suppression. We describe a novel decoding procedure that can account accurately for local context without solving difficult inference problems. We show this decoding procedure outperforms the state of the art. Finally, we show that decoding a combination of phrasal and object detectors produces real improvements in detector results.
ISSN:1063-6919
DOI:10.1109/CVPR.2011.5995711