DocumentCode
2602231
Title
Using saddle points for subpixel feature detection in camera calibration targets
Author
Lucchese, Luca ; Mitra, Sanjit K.
Author_Institution
Dept. of Electr. & Comput. Eng., Oregon State Univ., Corvallis, OR, USA
Volume
2
fYear
2002
fDate
2002
Firstpage
191
Abstract
The determination of reliable features with subpixel accuracy is an important requirement of any camera calibration algorithm. This paper offers a simple and computationally attractive method for extracting X-junctions with subpixel precision from images of calibration checkerboards by showing how the saddle points associated with them can be determined without any surface fitting required by standard feature detection algorithms.
Keywords
calibration; cameras; computer vision; feature extraction; X-junctions; calibration checkerboards; camera calibration targets; feature detection algorithms; saddle points; subpixel accuracy; subpixel feature detection; Calibration; Cameras; Computer vision; Detectors; Face detection; Focusing; Gaussian noise; Pixel; Signal to noise ratio; Surface fitting;
fLanguage
English
Publisher
ieee
Conference_Titel
Circuits and Systems, 2002. APCCAS '02. 2002 Asia-Pacific Conference on
Print_ISBN
0-7803-7690-0
Type
conf
DOI
10.1109/APCCAS.2002.1115151
Filename
1115151
Link To Document