1 July 1991 Update on focal-plane image processing research
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Proceedings Volume 1447, Charge-Coupled Devices and Solid State Optical Sensors II; (1991); doi: 10.1117/12.45329
Event: Medical Imaging '91, 1991, San Jose, CA, United States
Abstract
An update on research activities at Columbia University in the area of focal-plane image processing is presented. Two thrust areas have been pursued: image reorganization for image compression and image half-toning. The image reorganization processor is an integration of a 256 X 256 frame-transfer CCD imager with CCD-based circuitry for pixel data reorganization to enable difference encoding for hierarchical image compression. The reorganization circuitry occupies 2 of the total chip area and is performed using three parallel-serial-parallel (SP3) registers, a pixel resequencing block, and a sampling block for differential output. The chip has achieved a CTE of 0.99994 in this new SP3 architecture, at an output rate of 83 X 103 pixels/sec. (0.9996 at 2 X 106 pixels/sec) and an overall output amplifier sensitivity of 3.2 (mu) V/electron. The half-toning chip design has been described previously, and consists of a 256 X 256 frame transfer imager, a pipeline register, and comparator circuit. Functional testing of these elements is reported at this time.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Sabrina E. Kemeny, Sayed I. Eid, Sunetra K. Mendis, Eric R. Fossum, "Update on focal-plane image processing research", Proc. SPIE 1447, Charge-Coupled Devices and Solid State Optical Sensors II, (1 July 1991); doi: 10.1117/12.45329; https://doi.org/10.1117/12.45329
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