Suchergebnisse - "QM coder"

Design of integrated multimedia compression and encryption systems von Chung-Ping Wu, Kuo, C.-C.J.

“… Two specific encryption schemes are obtained by applying this approach to the Huffman coder and the QM coder …”
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Improvement of the coding efficiency for the QM-coder von Kuroki, Yoshimitsu, Ohta, Teiji

“… The QM‐coder [1] is an arithmetic code that is used in common in JPEG and JBIG as the binary information source coding …”
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Improving DC coding models of JPEG arithmetic coder von Lakhani, G.

“… While conducting experiments with JPEG binary arithmetic coding, we noticed that if a natural photographic image is rotated by 90/spl deg/ and then coded, the …”
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Forward-adaptive method for context-based compression of large binary images von Ageenko, Eugene I., Fränti, Pasi

“… Only minor modifications to the QM‐coder are required, and therefore existing software implementations can be easily utilized …”
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Fast implementation of two-level compression method using QM-coder von Nguyen-Phi, K., Weinrichter, H.

“… We deal with bi-level image compression. Modern methods consider the bi-level image as a high order Markovian source, and by exploiting this characteristic, …”
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High-fidelity coding for super high-definition images von Kuroki, Yoshimitsu, Ohta, Teiji

“… The super high‐definition images (SHDI) expected to be prominent in the systems of the 21st century consist of approximately 4000 scan lines and have extremely …”
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Source Coding Algorithms von Acharya, Tinku, Tsai, Ping‐Sing

“… In this chapter, we have presented some of the key source coding algorithms widely used in data and image compression. First we have described the run‐length …”
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An algorithm for compression of bilevel images von Reavy, M.D., Boncelet, C.G.

“… In contrast, the Joint Bilevel Image Experts Group (JBIG) uses a patented arithmetic coder, the IBM QM-coder, to compress image data and a predetermined probability table to estimate …”
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An embedded still image coder with rate-distortion optimization von Li, J, Lei, S

“… It is well known that the fixed rate coder achieves optimality when all coefficients are coded with the same rate-distortion (R-D) slope. In this paper, we …”
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An improved pattern matching technique for lossy lossless compression of binary printed Farsi and Arabic textual images von Grailu, Hadi, Lotfizad, Mojtaba, Sadoghi-Yazdi, Hadi

“… Purpose - The purpose of this paper is to propose a lossy lossless binary textual image compression method based on an improved pattern matching (PM) …”
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A Greedy Renormalization Method for Arithmetic Coding von Yunwei Jia, En-hui Yang, Da-ke He, Chan, S.

“… A typical arithmetic coder consists of three steps: range calculation, renormalization, and probability model updating. In this paper, we propose and analyze …”
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Efficient Video Coding Using Legacy Algorithmic Approaches von Jianwen Chen, Feng Xu, Yun He, Villasenor, J., Yuxing Han, Yan Xu, Yaocheng Rong, Reader, C., Jiangtao Wen

“… We show that for high bit rates, a video coding algorithm using a suitable combination of the QM coder and on other methods first published over 20 years ago can deliver video quality rivaling that of H …”
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A rapid probability estimator and binary arithmetic coder von Withers, W.D.

“… We present a new integrated algorithm for binary arithmetic coding and probability estimation, competitive in speed and compression performance with state-of-the-art algorithms such as the QM-coder and Z-coder …”
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The Qx-coder von Slattery, M. J., Mitchell, J. L.

“… The Joint Bi-level Image Experts Group (JBIG) settled upon a software-optimized QM-coder …”
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Comparative Study of Performances in Lossless Data Compression for English and Romanian Text Files Using the Q-Coder von Radescu, Radu

“… compression and decompression operation is applied, this work focuses on compression using the Q-coder, which is a relatively new and less-used coder than the QM-coder, which largely uses the same …”
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Redesigning of JPEG statistical model in the lossy mode fitting distribution of DCT coefficients von Kuroki, Y., Ueshige, Y., Ohta, T.

“… ) coefficients into binary strings and context modeling in the case where the binary arithmetic coder called the QM-coder is employed as an entropy coder …”
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Techniques for audiovisual data confidentiality, integrity and copyright protection von Wu, Chung-Ping

“… The fast growth of multimedia processing and delivery technologies makes many new multimedia applications possible. To prevent multimedia content from being …”
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A new algorithm for bi-level image compression von Reavy, Maire D

“… In contrast, JBIG (Joint Bi-level Image experts Group) uses a patented arithmetic coder, the IBM QM-coder, to compress image data and a predetermined probability table to estimate …”
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Forward adaptive modeling for context-based compression of large binary images in applications requiring spatial access von Ageenko, E., Franti, P.

“… Compression stage is performed by JBIG arithmetic coder, namely the QM-coder. The method improves the compression performance significantly in comparison to JBIG if it is used in a similar manner …”
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Device selective quantization for reversible wavelets von Gormish, M.J., Zandi, A., Schwartz, E.L., Keith, A., Boliek, M.

“… Finally the FSM-coder, a binary entropy coder with functionality similar to the QM-coder, is used to generate the final code stream …”
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