Title
Detecting Rectangular Objects In Urban Imagery A Re-Segmentation Approach
Abstract
Image segmentation is a broad area, which covers strategies for splitting one input image into its components. This paper aims to present a re-segmentation approach applied to urban imagery, where the interest elements (houses roofs) are considered to have a rectangular shape. Our technique finds and generates rectangular objects, leaving the remaining objects as background. With an over-segmented image we connect adjacent objects in a graph structure, known as Region Adjacency Graph - RAG. We then go into the graph, searching for best cuts that may result in segments more rectangular, in a relaxation-like approach. Graph search considers information about object class, through a pre-classification stage using Self-Organizing Maps algorithm. Results show that the method was able to find rectangular elements, according user-defined parameters, such as maximum levels of graph searching and minimum degree of rectangularity for interest objects.
Year
Venue
Keywords
2009
VISAPP 2009: PROCEEDINGS OF THE FOURTH INTERNATIONAL CONFERENCE ON COMPUTER VISION THEORY AND APPLICATIONS, VOL 2
Re-Segmentation, Graph-Based Segmentation, Remote Sensing, Urban Imagery
Field
DocType
Citations 
Adjacency list,Computer vision,Graph,Pattern recognition,Segmentation,Computer science,Image segmentation,Object Class,Artificial intelligence
Conference
1
PageRank 
References 
Authors
0.35
13
3
Name
Order
Citations
PageRank
Thales Sehn Korting12412.47
Luciano Vieira Dutra27126.78
Leila Maria Garcia Fonseca34717.89