Title:
カメラ・キャリブレーション装置及び方法、並びに、記憶媒体
Document Type and Number:
Japanese Patent JP4501239
Kind Code:
B2
Abstract:
A camera calibration device capable of simply calibrating a stereo system consisting of a base camera and a detection camera. First, distortion parameters of the two cameras necessary for distance measurement are presumed by the use of images obtained by shooting a patterned object plane with the base camera and the reference camera at three or more view points free from any spatial positional restriction, and projective transformation matrixes for projecting the images respectively onto predetermined virtual planes are calculated. Then internal parameters of the base camera are calculated on the basis of the projective transformation matrixes relative to the images obtained from the base camera. Subsequently the position of the shot plane is presumed on the basis of the internal parameter of the base camera and the images obtained therefrom, whereby projection matrixes for the detection camera are calculated on the basis of the plane position parameters and the images obtained from the detection camera. According to this device, simplified calibration can be achieved stably without the necessity of any exclusive appliance.
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Inventors:
Yoshiaki Iwai
Takayuki Ashigahara
Takayuki Ashigahara
Application Number:
JP2000212381A
Publication Date:
July 14, 2010
Filing Date:
July 13, 2000
Export Citation:
Assignee:
ソニー株式会社
International Classes:
G01B11/00; H04N17/00; G01C3/00; G01C3/06; G01C3/08; G01C11/06; G06T7/00; H04N13/00; H04N13/02; G01S11/12
Domestic Patent References:
| JP11053548A | ||||
| JP8201021A | ||||
| JP2000350239A |
Other References:
Zhengyou Zhang,A Flexible New Technique for Camera Calibration,Microsoft Research Technical Report,米国,1998年12月 2日,MSR-TR-98-71,1-20,URL,http://www.research.microsoft.com/~zhang/
Attorney, Agent or Firm:
Eiji Yamada
Masaaki Miyata
Toshio Sawada
Masaaki Miyata
Toshio Sawada