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Proceedings IEEE Workshop on Applications of Computer Vision (1992)
Palm Springs, CA, USA
Nov. 30, 1992 to Dec. 2, 1992
ISBN: 0-8186-2840-5
pp: 4-10
R.S. Wallace , Vision Applications, New York, NY, USA
B.B. Bederson , Vision Applications, New York, NY, USA
E.L. Schwartz , Vision Applications, New York, NY, USA
ABSTRACT
Presents a robotic video telephone application of the Cortex-1 miniaturized space-variant active vision system. The embedded processor architecture of Cortex-1 enables it to implement a variety of functions not found in conventional video telephones, for example the camera tracks moving users with its pantilt mechanism. The authors also report an analog channel coding scheme to transmit logmap video images through band-limited analog channels such as the public switched telephone network (PSTN). The transmitter divides the frequency band into 768 channels, and modulates two values in quadrature on each channel. Some channels are reserved for special calibration signals enabling the receiver to recover both the phase and magnitude of the transmitted signal. The remaining channels carry pixel intensities.<>
INDEX TERMS
computer vision, robots, videotelephony
CITATION

R. Wallace, B. Bederson and E. Schwartz, "Voice-bandwidth visual communication through logmaps: the Telecortex," Proceedings IEEE Workshop on Applications of Computer Vision(ACV), Palm Springs, CA, USA, , pp. 4-10.
doi:10.1109/ACV.1992.240333
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