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Full-Text Articles in Engineering
Employing H.264 Coarse And Medium Grain Scalable Video To Optimize Video Playback Over Passive Optical Networks, David Moore
Employing H.264 Coarse And Medium Grain Scalable Video To Optimize Video Playback Over Passive Optical Networks, David Moore
Honors College Theses
In this work, we propose the use of Coarse Grain Scalable (CGS) and Medium Grain Scalable (MGS) H.264/AVC video to optimize video playback on passive optical networks (PONs) by investigating network performance metrics such as data delay, video delay, and video delay jitter. Video playback is improved by sequentially dropping layers of scalable video. Dropping just a single CGS enhancement layer results in improvements of up to 57% for both data and video delay. However, video delay jitter benefits the most with an improvement ranging from 47% to 87%. Surprisingly, dropping subsequent CGS enhancement layers does not significantly improve the …
Efficient Image Coding And Transmission In Deep Space Communication, Reiner Dizon
Efficient Image Coding And Transmission In Deep Space Communication, Reiner Dizon
Honors College Theses
The usefulness of modern digital communication comes from ensuring the data from a source arrives to its destination quickly and correctly. To meet these demands, communication protocols employ data compression and error detection/correction to ensure compactness and accuracy of the data, especially for critical scientific data which requires the use of lossless compression. For example, in deep space communication, information received from satellites to ground stations on Earth come in huge volumes captured with high precision and resolution by space mission instruments, such as Hubble Space Telescope (HST). On-board implementation of communication protocols poses numerous constraints and demands on the …