A New Unified Lossless/Lossy Image Compression Based on a New Integer DCT

• CHOKCHAITAM Somchart

  Department of Electrical Engineering, Thammasat University

• IWAHASHI Masahiro

  Department of Electrical Engineering, Nagaoka University of Technology

• JITAPUNKUL Somchai

  Department of Electrical Engineering, Chulalongkorn University

抄録

In this paper, we propose a new one-dimensional (ID) integer discrete cosine transform (Int-DCT) for unified lossless/lossy image compression. The proposed 1D Int-DCT is newly designed to reduce rounding effects by minimizing number of rounding operations. The proposed Int-DCT can be operated not only lossless coding for a high quality decoded image but also lossy coding for a compatibility with the conventional DCT-based coding system. Both theoretical analysis and simulation results confirm an effectiveness of the proposed Int-DCT.

収録刊行物

• IEICE transactions on information and systems

  IEICE transactions on information and systems 88 (7), 1598-1606, 2005-07-01

  一般社団法人電子情報通信学会

キーワード

• Integer-DCT
• lossless
• lossy
• image compression
• rounding operation
• rounding effect

詳細情報

• CRID: 1574231877208117888
• NII論文ID: 110003214354
• NII書誌ID: AA10826272
• ISSN: 09168532
• 本文言語コード: en
• データソース種別:
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