Title :
A CMOS imager with focal plane compression
Author :
Leon-Salas, Walter D. ; Balkir, Sina ; Sayood, Khalid ; Hoffman, Michael W. ; Schemm, Nathan
Author_Institution :
Dept. of Electr. Eng., Nebraska-Lincoln Univ., Lincoln, NE
Abstract :
A focal plane video compression integrated circuit is presented. The design consists of a 128 times 128 pixel array and a bank of column-level processors. Each one of the column-level processors performs the tasks of image decorrelation, quantization, and entropy encoding. The chip provides at its output a compressed bit stream. The integration of the quantizer and the entropy encoder at the column level is possible by sharing circuitry between a single-slope analog-to-digital converter and a Golomb-Rice entropy encoder. In addition, the design includes a low-complexity algorithm for the adaptation of the Golomb-Rice coder to the statistics of the video signal. The design has been fully verified through simulations and has been implemented in a 0.35 mum CMOS technology. The chip layout occupies an area of 7 times 5 mm2
Keywords :
CMOS image sensors; analogue-digital conversion; data compression; entropy codes; focal planes; integrated circuit design; video coding; 0.35 micron; CMOS imager; CMOS integrated circuit; Golomb-Rice entropy encoder; analog-to-digital converter; column-level processors; entropy encoding; focal plane compression; image decorrelation; integrated circuit design; low-complexity algorithm; quantization; video compression integrated circuit; video signal; Analog-digital conversion; CMOS technology; Circuits; Decorrelation; Entropy; Image coding; Quantization; Signal design; Streaming media; Video compression;
Conference_Titel :
Circuits and Systems, 2006. ISCAS 2006. Proceedings. 2006 IEEE International Symposium on
Conference_Location :
Island of Kos
Print_ISBN :
0-7803-9389-9
DOI :
10.1109/ISCAS.2006.1693398
