A fully pipelined programmable real-time (3 x 3) image filter based on capacitive threshold-logic gates

Leblebici Y., Kepkep A., Gurkaynak F., Ozdemir H., Cilingiroglu U.

1997 IEEE International Symposium on Circuits and Systems (ISCAS 97) - Circuits and Systems in the Information Age, HONG KONG, Hong Kong, 9 - 12 June 1997, pp.2072-2075 identifier

  • Publication Type: Conference Paper / Full Text
  • Volume:
  • City: HONG KONG
  • Country: Hong Kong
  • Page Numbers: pp.2072-2075
  • Istanbul Technical University Affiliated: No


A novel programmable 2-D image filter architecture with a (3 x 3) window size is presented, which is based on Capacitive Threshold-Logic (CTL) gates. The filter architecture is fully pipelined, and data processing is highly parallelized in order to take advantage of the high-speed building blocks used in the design, A fixed-coefficient processing core has been designed and fabricated using conventional 1.2 micron double-polysilicon CMOS technology to evaluate the performance of the proposed architecture, The chip core area (1.8 mm x 1.5 mm) compares very favorably with other image filter chips using a similar technology, Extensive post-layout simulations have shown that the chip will allow a maximum clock frequency of about 100 MHz. With this data throughput capability, the programmable image filter will be able to process high-resolution (1024 x 1024) pixel images at a rate of 50 frames per second.