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dc.contributor.authorDung, Lan-Rongen_US
dc.contributor.authorWu, Yin-Yien_US
dc.contributor.authorLai, Hsin-Chengen_US
dc.contributor.authorWeng, Ping-Kuoen_US
dc.date.accessioned2014-12-08T15:04:00Z-
dc.date.available2014-12-08T15:04:00Z-
dc.date.issued2008en_US
dc.identifier.isbn978-1-4244-2878-6en_US
dc.identifier.urihttp://hdl.handle.net/11536/2497-
dc.description.abstractThe objective of this paper is to develop an ultra-low-power video compression processor for capsule endoscope to lower the RF transmitter bandwidth. In applications of capsule endoscope, it is imperative to consider battery life and performance trade-offs. Applying state-of-the-art video compression techniques may significantly reduce the image bit rate by their high compression ratio, but they all require intensive computation and consume much power from battery. There are also many fast video compression algorithms for reducing computation load; however, they may result in distortion of original image. A new video compression algorithm for gastrointestinal image based on H.264 Intra-frame encoder and its corresponding VLSI architecture are both proposed for low-power, high bite-rate wireless capsule endoscope. The algorithm exploits the characteristic of gastrointestinal image and H.264 intra-frame prediction technique to reduce computing complexity and save battery power consumption. As the result of implementation, the developed video compressor for 512-by-512 image sensor and 2 Mbits/sec RF transmitter costs 60k gates and consumes 0.9161mW power at 2 frames/sec while the average compression rate can be as low as 82%.en_US
dc.language.isoen_USen_US
dc.titleA Modified H.264 Intra-frame Video Encoder for Capsule Endoscopeen_US
dc.typeProceedings Paperen_US
dc.identifier.journal2008 IEEE BIOMEDICAL CIRCUITS AND SYSTEMS CONFERENCE - INTELLIGENT BIOMEDICAL SYSTEMS (BIOCAS)en_US
dc.citation.spage63en_US
dc.citation.epage64en_US
dc.contributor.department電控工程研究所zh_TW
dc.contributor.departmentInstitute of Electrical and Control Engineeringen_US
dc.identifier.wosnumberWOS:000264876700016-
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