Design of a CCD focal-plane codec preprocessor for lossless image compression

Sabrina E. Kemeny; H. E. Meadows; Eric R. Fossum

doi:10.1117/12.19443

1 July 1990 Design of a CCD focal-plane codec preprocessor for lossless image compression

Sabrina E. Kemeny, H. E. Meadows, Eric R. Fossum

Proceedings Volume 1242, Charge-Coupled Devices and Solid State Optical Sensors; (1990) https://doi.org/10.1117/12.19443
Event: Electronic Imaging: Advanced Devices and Systems, 1990, Santa Clara, CA, United States

Abstract

The paper presents the design of a CCD-based codec preprocessor (CP) integrated with an areal imager. 3 x 3 pixel neighborhood blocks, where the center pixel arrives first, are utilized for the lossless compression algorithm in the image coding scheme. A 256 x 256 buried-channel frame transfer device with 15 x 15 square microns pixels is employed as the imager. The neighborhood reconstruction is effected by means of both row regrouping and pixel resequencing operations. Four designs for CCD CP chips are described: two hybridized to the imager array, and two integrated with the imager. The chips operate at a 30 Hz frame rate with power dissipation at less than 10 uW. The size of the hybrid chips is 2.5 x 5.5 sq mm, and the focal-plane chips' CPs require an area of 250 x 400 square microns. The CPs provide differential output appropriate for lossless coding and compression to off-chip electronics when reorganization of the image data into local 3 x 3 neighborhood blocks is complete.

Citation Download Citation

Sabrina E. Kemeny, H. E. Meadows, and Eric R. Fossum "Design of a CCD focal-plane codec preprocessor for lossless image compression", Proc. SPIE 1242, Charge-Coupled Devices and Solid State Optical Sensors, (1 July 1990); https://doi.org/10.1117/12.19443

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