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Proceedings Paper

Automatic control of a robot camera for broadcasting and subjective evaluation and analysis of reproduced images
Author(s): Daiichiro Kato; Akio Ishikawa; Takao Tsuda; Shigeru Shimoda; Hiroshi Fukushima
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Paper Abstract

We are studying about an intelligent robot camera that can automatically shoot an object and produce images with a powerful sense of reality as if a very skilled cameraman were at work. In this study, we designed a control algorithm based on cameramen's techniques for the control of the robot camera and conducted a series of experiments to understand the effects of camera work on how images look to viewers. The findings were as follows: (1) Evaluation scores are high when actual data by cameraman, especially typical data, are used as the position adjusting velocity curve of the target. (2) Evaluation scores are relatively high for images taken with feedback-feedforward camera control method when the target moves in one direction. (3) When both the direction and velocity of the target change and when the target gets bigger and faster in the view finder, it becomes increasingly difficult to keep the target within the view finder using the control method that imitates the human camera handling. (4) The method with mechanical feedback, on the other hand, is able to cope with rapid changes in the target's direction and velocity, constantly keeping the target within the view finder. Even so, the viewer finds the image rather mechanical than natural.

Paper Details

Date Published: 2 June 2000
PDF: 12 pages
Proc. SPIE 3959, Human Vision and Electronic Imaging V, (2 June 2000);
Show Author Affiliations
Daiichiro Kato, NHK Science and Technical Research Labs. (Japan)
Akio Ishikawa, NHK Science and Technical Research Labs. (Japan)
Takao Tsuda, NHK Science and Technical Research Labs. (Japan)
Shigeru Shimoda, NHK Science and Technical Research Labs. (Japan)
Hiroshi Fukushima, NHK Science and Technical Research Labs. (Japan)

Published in SPIE Proceedings Vol. 3959:
Human Vision and Electronic Imaging V
Bernice E. Rogowitz; Thrasyvoulos N. Pappas, Editor(s)

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