Automatic Control of a Robot Camera for Broadcasting Based on Cameramen's Techniques and Subjective Evaluation and Analysis of Reproduced Images.

Abstract

With the goal of achieving an intelligent robot camera system that can take dynamic images automatically through humanlike, natural camera work, we analyzed how images were shot, subjectively evaluated reproduced images, and examined effects of camerawork, using camera control technique as a parameter. It was found that (1) A high evaluation is obtained when humanbased data are used for the position adjusting velocity curve of the target; (2) Evaluation scores are relatively high for images taken with feedback-feedforward camera control method for target movement in one direction; (3) Keeping the target within the image area using the control method that imitates human camera handling becomes increasingly difficult when the target changes both direction and velocity and becomes bigger and faster, and (4) The mechanical feedback method can cope with rapid changes in the target's direction and velocity, constantly keeping the target within the image area, though the viewer finds the image rather mechanical as opposed to humanlike.

A large-scale behavior corpus including multi-angle video data for observing infants' long-term developmental processes

“…Recently, work aiming to produce singlestream programs or archives has increased. This trend has encouraged much research on collaborative control of multiple cameras [10,11], or methods for generating 3D models using video from multiple cameras [12]. However, there is little to no contribution toward applying multi-angle video to behavior corpus construction for research use.…”

Camerawork for intelligent video production - capturing desktop manipulations

“…Here we show an experiment for an actual presentation, in which a person explained how 2 EVI-D30(Sony) 3 Flock of Birds(Ascension Technology Corporation) 4 IBM ViaVoice 5 The apparent position is plotted with normalized in terms of the screen size. The apparent velocity is the ratio of the difference in normalized position between video two consecutive frames.…”