191 |
A Comparison of Various Video Compression Methods for Use in Instrumentation SystemsRieger, James L., Gattis, Sherri L. 10 1900 (has links)
International Telemetering Conference Proceedings / October 25-28, 1993 / Riviera Hotel and Convention Center, Las Vegas, Nevada / Various forms of 'lossy' and 'lossless' encoding have been
implemented or proposed to allow compression of still and motion picture
images, with varying degrees of success which in turn depend on how
success is defined. Proponents of various systems claim 'compression
ratios' which by their nature defy comparison of one system with another
and suggest there actually may be something like a free lunch. This paper
compares various compression methods as well as the implications
involved in using them and what happens when different systems
encounter the problems associated with the uses of the restored picture.
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192 |
Digital Video Telemetry SystemThom, Gary A., Snyder, Edwin 10 1900 (has links)
International Telemetering Conference Proceedings / October 28-31, 1996 / Town and Country Hotel and Convention Center, San Diego, California / The ability to acquire real-time video from flight test platforms is becoming an
important requirement in many test programs. Video is often required to give the
flight test engineers a view of critical events during a test such as instrumentation
performance or weapons separation. Digital video systems are required because
they allow encryption of the video information during transmission. This paper
describes a Digital Video Telemetry System that uses improved video
compression techniques which typically offer at least a 10:1 improvement in image
quality over currently used techniques. This improvement is the result of inter-frame
coding and motion compensation which other systems do not use. Better
quality video at the same bit rate, or the same quality video at a lower bit rate is
achieved. The Digital Video Telemetry System also provides for multiplexing the
video information with other telemetered data prior to encryption.
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193 |
Wavelet Based Video Compression for A Low-Rate Data LinkLandry, Michael W., Lee, Jeffrey C. 10 1900 (has links)
International Telemetering Conference Proceedings / October 25-28, 1999 / Riviera Hotel and Convention Center, Las Vegas, Nevada / Conventional video image transmission requires large data bandwidths, whether the
signals are transmitted in analog or digital form. Many applications are limited to
bandwidths that will not support image transmission unless high compression ratios are
employed. Video compression techniques based on wavelet functions provide high data
compression while preserving image quality, but are computationally demanding.
Recently available high-integration devices that utilize wavelet basis functions for video
compression have made possible low-cost high-performance video compression systems.
Image data is more useful when provided with other data such as position information,
telemetry, or other user data. This paper describes the technology, features, and
limitations of a versatile low data rate system incorporating compressed video data.
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IMPLEMENTATION OF REAL-TIME AIRBORNE VIDEO TELEMETRY SYSTEMNam, Ju-Hun, Choi, Byeong-Doo, Ko, Sung-Jea, Kim, Bok-Ki, Lee, Woon-Moon, Lee, Nam-Sik, Yu, Jea-Taeg 10 1900 (has links)
ITC/USA 2005 Conference Proceedings / The Forty-First Annual International Telemetering Conference and Technical Exhibition / October 24-27, 2005 / Riviera Hotel & Convention Center, Las Vegas, Nevada / In this paper, we present an efficient real-time implementation technique for Motion-JPEG2000 video compression and its reconstruction used for a real-time Airborne Video Telemetry System. we utilize Motion JPEG2000 and 256-channel PCM Encoder was used for source coding in the developed system. Especially, in multiplexing and demultiplexing PCM encoded data, we use the continuous bit-stream format of the PCM encoded data so that any de-commutator can use it directly, after demultiplexing. Experimental results show that our proposed technique is a practical and an efficient DSP solution.
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Pulse compression filter design for ultrasonic non-destructivetesting林鴻耀, Lam, Hung-yiu. January 1994 (has links)
published_or_final_version / Electrical and Electronic Engineering / Master / Master of Philosophy
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196 |
Design of open cold rolled sections under axial force and bending momentNanou, Katerina January 1999 (has links)
No description available.
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197 |
Video coding using lapped transformsYoung, Robert W. January 1993 (has links)
No description available.
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198 |
Image sequence coding using intensity-based feature separationLai, Man Lok Michael January 1992 (has links)
No description available.
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199 |
An assessment of the quantification of map complexityFairbairn, David John January 1999 (has links)
No description available.
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200 |
Context-based image transmissionSalous, Mounther N. H. January 1999 (has links)
No description available.
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