Presentation 1997/10/24
Content-Based 2D-DCT Coding Using Symmetric Padding
Satoshi MISAKA, Yuichiro NAKAYA,
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Abstract(in English) Content-based coding, which independently encodes the objects included in a picture, has recently attracted considerable attention for its property of enabling object-based editing of still and motion pictures. In content-based coding, it is required to code arbitrarily shaped objects. Therefore, it is necessary to apply 2D-DCT to 8x8 blocks that include object boundaries. Padding is a technique that enables coding of such blocks by assigning imaginary values to the pixels that are not included in the object. In this paper, a 2D-DCT coding method, which changes the padding method accordingly to the features of the object shape, is proposed. Due to the increase of the number of zero DCT coefficients, the coding performance is improved by using this method.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Content-Based Coding / 2D-DCT / Padding / Scanning
Paper # IE97-79
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Committee IE
Conference Date 1997/10/24(1days)
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Paper Information
Registration To Image Engineering (IE)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Content-Based 2D-DCT Coding Using Symmetric Padding
Sub Title (in English)
Keyword(1) Content-Based Coding
Keyword(2) 2D-DCT
Keyword(3) Padding
Keyword(4) Scanning
1st Author's Name Satoshi MISAKA
1st Author's Affiliation Hitachi, Ltd. Central Research Laboratory()
2nd Author's Name Yuichiro NAKAYA
2nd Author's Affiliation Hitachi, Ltd. Central Research Laboratory
Date 1997/10/24
Paper # IE97-79
Volume (vol) vol.97
Number (no) 339
Page pp.pp.-
#Pages 6
Date of Issue