论文信息 - The Qx-coder

The Qx-coder

The IBM Adaptive Bilevel Image Compression (ABIC) algorithm depends upon the hardware-optimized Q-coder. The Joint Bi-level Image Experts Group (JBIG) settled upon a software-optimized QM-coder. This paper explores the incompatibilities of the hardware-and software-optimized binary arithmetic coding conventions and reports on the solution that allowed a merged Qx-coder in hardware. A unique hardware solution is presented for the termination of the JBIG data stream (CLEARBITS). The probability estimation is presented in a common format. Detailed flowcharts are included in the Appendix. An ASIC core is available that supports both the ABIC and JBIG bilevel data compression standards using this merged Qx-coder.

Joan L. Mitchell | Michael J. Slattery

[1] Joan L. Mitchell,et al. Probability Estimation for the Q-Coder , 1988, IBM J. Res. Dev..

[2] Stuart H. Burroughs,et al. Data compression technology in ASIC cores , 1998, IBM J. Res. Dev..

[3] K. M. Marks,et al. A JBIG-ABIC compression engine for digital document processing , 1998, IBM J. Res. Dev..

[4] Ronald Arps,et al. A Multi-Purpose VLSI Chip for Adaptive Data Compression of Bilevel Images , 1988, IBM J. Res. Dev..

[5] Francis A. Kampf. Performance as a function of compression , 1998, IBM J. Res. Dev..

[6] Joan L. Mitchell,et al. Software Implementations of the Q-Coder , 1988, IBM J. Res. Dev..

[7] Glen G. Langdon,et al. An Overview of the Basic Principles of the Q-Coder Adaptive Binary Arithmetic Coder , 1988, IBM J. Res. Dev..

[8] Joan L. Mitchell,et al. Optimal Hardware and Software Arithmetic Coding Procedures for the Q-Coder , 1988, IBM J. Res. Dev..