ITE Technical Report
Online ISSN : 2424-1970
Print ISSN : 1342-6893
ISSN-L : 1342-6893
21.28
Conference information
Extraction of Camera Parameters Using projective invariance for Virtual Studio
SeoWon HanJoonWhaon LeeMasayuki NAKAJIMA
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CONFERENCE PROCEEDINGS FREE ACCESS

Pages 49-54

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Abstract

Virtual Studio currently uses cromakey method in which a image is captured, and blue portion of that image is replaced by Computer Graphics image or real image. The replaced image must be changed according to the camera motion. This paper proposes a method to extract camera parameters (camera position, rotation and focus) using recognition of pentagonal patterns. At first, we find matching points of two projective images using invariable features of pentagon. Then, we calculate the projective transformation of two projective images and camera parameters using matching points. Simulation results indicate that camera parameters are calculated easily compared with conventional methods.

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© 1997 The Institute of Image Information and Television Engineers
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