Title
Automatic Registration of RGB-D Scans via Salient Directions
Abstract
We address the problem of wide-baseline registration of RGB-D data, such as photo-textured laser scans without any artificial targets or prediction on the relative motion. Our approach allows to fully automatically register scans taken in GPS-denied environments such as urban canyon, industrial facilities or even indoors. We build upon image features which are plenty, localized well and much more discriminative than geometry features, however, they suffer from viewpoint distortions and request for normalization. We utilize the principle of salient directions present in the geometry and propose to extract (several) directions from the distribution of surface normals or other cues such as observable symmetries. Compared to previous work we pose no requirements on the scanned scene (like containing large textured planes) and can handle arbitrary surface shapes. Rendering the whole scene from these repeatable directions using an orthographic camera generates textures which are identical up to 2D similarity transformations. This ambiguity is naturally handled by 2D features and allows to find stable correspondences among scans. For geometric pose estimation from tentative matches we propose a fast and robust 2 point sample consensus scheme integrating an early rejection phase. We evaluate our approach on different challenging real world scenes.
Year
DOI
Venue
2013
10.1109/ICCV.2013.349
international conference on computer vision
Keywords
Field
DocType
surface normal,rgb-d data,whole scene,arbitrary surface shape,geometry feature,automatic registration,scanned scene,different challenging real world,rgb-d scans,gps-denied environment,early rejection phase,salient directions,artificial target,image registration,geometry,feature extraction,pose estimation,image texture
Computer vision,Normalization (statistics),Pattern recognition,Feature (computer vision),Computer science,Image texture,Pose,Feature extraction,Artificial intelligence,Rendering (computer graphics),Image registration,3D reconstruction
Conference
Volume
Issue
ISSN
2013
1
1550-5499
Citations 
PageRank 
References 
12
0.55
21
Authors
3
Name
Order
Citations
PageRank
Bernhard Zeisl11146.75
Kevin Köser228215.05
Marc Pollefeys37671475.90