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Ordered-binary decision diagram for Web images

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dc.contributor.advisor Dr. Kanchana Kanchanasut (Chairperson) en_US
dc.contributor.advisor Professor Chidchanok Lursinsap (Member) en_US
dc.contributor.advisor Dr. Aekavute Sujarae (Member) en_US
dc.contributor.author Akara Prayote en_US
dc.date April 2001 en_US
dc.date.accessioned 2015-01-12T10:39:12Z
dc.date.available 2015-01-12T10:39:12Z
dc.identifier.other AIT Thesis no.CS-00-32 en_US
dc.identifier.uri http://www.cs.ait.ac.th/xmlui/handle/123456789/170
dc.description 42 p. en_US
dc.description.abstract OBDD image representation has been proposed as an alternative of compression algorithm. An encoding scheme for OBDD image representation was implemented to compressed data of bi-level and gray-scaled images. It has been shown to provide better lossless compression for bi-level images than GIF. This thesis proposed techniques to improve the efficiency of compression. To eliminate dividing a gray-scaled bitmap into eight separate bitplanes, bitplane information was included into OBDD. It has been shown that this technique did not reduce space requirement. Subsequently, an OBDD was proposed to contain multiple sinks, each of which represents a unique color code. It has been shown that space requirement was reduced, even though it has not been better than GIF. Hence, the encoding scheme was adjusted to the OBDD characteristics. Adjustment in encoding scheme has reduced images sizes. It has been shown to provide better lossless compression for gray-scaled and 256-color images than GIF especially for images with pixels sharing same color are grouped together. en_US
dc.description.sponsorship Royal Thai Government en_US
dc.relation.ispartof Thesis no. CS-00-32 en_US
dc.relation.ispartof Asian Institute of Technology. Thesis no. CS-00-32 en_US
dc.source SAT/CS en_US
dc.subject Image processing -- Digital techniques en_US
dc.subject Computer graphics en_US
dc.title Ordered-binary decision diagram for Web images en_US
dc.type Thesis en_US

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