Methods for Reducing the Blocking Artifact Observed in Images which have been Compressed using Transform Coding and Vector Quantization

Information

• NSF Award
• 9203073

Owner

• Optivision Ltd.

• Award Id

  9203073

• Award Effective Date

  9/1/1992 - 31 years ago

• Award Expiration Date

  5/31/1995 - 29 years ago

• Award Amount

  $ 250,000.00

• Award Instrument

  Standard Grant

This Phase II project addresses the problems in the quality of images transmitted in a computer environment. A common problem is the "tile effect" which is introduced by compression of the signal for transmission and then decompression for viewing. The principal investigator is developing a new algorithm, called the JPEG/RBC algorithm, which is based on a two source decomposition derived from a noncausal model for image data and fits closely within the framework of the JPEG standard. A preliminary version of the algorithm was shown in Phase I to reduce this problem as well as the compressed data rate when compared to commonly used algorithms. Potential applications include photo ID systems, medical imaging, intelligence and prepress.

• Program Officer

  Ritchie B. Coryell

• Min Amd Letter Date

  9/2/1992 - 31 years ago

• Max Amd Letter Date

  11/22/1994 - 29 years ago

• ARRA Amount

• Name

  Optivision Incorporated

• City

  Palo Alto

• State

  CA

• Country

  United States

• Address

  3450 Hillview Avenue

• Postal Code

  943041338

• Phone Number

  4158550200

• First Name

  Paul

• Last Name

  Farrelle

• Start Date

  9/1/1992 12:00:00 AM

• Name

  Telecommunications

• Code

  206000

• Name

  Engineering-Electrical

• Code

  55