Ricoh Company, Ltd.

Ricoh Corporation

Other

International Business Machines Corporation

Sun Microsystems, Inc.

Richo Company, Ltd.

Coverity, Inc.

Richo Corporation

Ahmad Zandi

Edward L Schwartz

Martin P Boliek

Michael J Gormish

Alexander F Keith

James D Allen

Glen G Langdon, Jr

David Geoffrey Stork

Balakrishna Raghavendra Iyer

John F Cullen

Mark Anthony Sovik

Pong-sheng Wang

Brian J Smith

Nancy Y Young

Susan Marie Kunz

Tibor Boros

Timothy M Braje

Darin Manica

Krishna K Noru

Alex Keith

James W Nash

Alexander King

Nathan Derrek Ryan

A method and apparatus for evaluating quality of a codebase is provided. The evaluation is provided by developing metrics, indicators, and indices for all levels of a codebase to provide indicators of quality and to enable identification of code blocks that need to be improved.

Computer programming adaptive analysis

A compression and decompression system in which a reversible wavelet filter are used to generates coefficients from input data, such as image data. The reversible wavelet filter is an efficient transform implemented with integer arithmetic that has exact reconstruction. The present invention uses the reversible wavelet filter in a lossless system (or lossy system) in which an embedded codestream is generated from the coefficients produced by the filter. An entropy coder performs entropy coding on the embedded codestream to produce the compressed data stream.

Compression and decompression with wavelet style and binary style including quantization by device-dependent parser

Method and apparatus for compression using reversible wavelet transforms and an embedded codestream

A method and apparatus for encoding and decoding data is described. The present invention includes a method and apparatus for generating transformed signals in response to input data. In one embodiment, the transformed signals are generated using a reversible wavelet transform. The present invention also includes a method and apparatus for compressing the transformed signals into data representing a losslessly compressed version of the input data. In one embodiment, the present invention decomposes the input data using a non-minimal length reversible filter. The decomposition may be performed using multiple one-dimension filters.

Method for compression using reversible embedded wavelets

A reversible Discrete Cosine Transform (DCT) is described. The reversible DCT may be part of a compressor in a system. The system may include a decompressor with a reversible inverse DCT for lossless decompression or a legacy decompressor with an inverse DCT for lossy decompression.

Reversible DCT for lossless-lossy compression

A method and apparatus for performing compression and/or decompression is described. In one embodiment, the present invention comprises a system having a buffer, a wavelet transform unit, and a coder. The wavelet transform unit has an input coupled to the buffer to perform a wavelet transform on pixels stored therein and to generate coefficients at an output. The coder is coupled to the wavelet transform unit to code the transformed pixels received from the buffer.

Reversible embedded wavelet system implementation

Reversible DCT for lossless&mdash;lossy compression

Compression/decompression using reversible embedded wavelets

Apparatus for compression using reversible embedded wavelets

Growing community of inventors

Cupertino, CA, United States of America

Ahmad Zandi