A 10 000 fps CMOS Sensor With Massively Parallel Image Processing
- 25 February 2008
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Journal of Solid-State Circuits
- Vol. 43 (3) , 706-717
- https://doi.org/10.1109/jssc.2007.916618
Abstract
A high-speed analog VLSI image acquisition and pre-processing system has been designed and fabricated in a 0.35 ¿m standard CMOS process. The chip features a massively parallel architecture enabling the computation of programmable low-level image processing in each pixel. Extraction of spatial gradients and convolutions such as Sobel or Laplacian filters are implemented on the circuit. For this purpose, each 35 ¿m × 35 ¿m pixel includes a photodiode, an amplifier, two storage capacitors, and an analog arithmetic unit based on a four-quadrant multiplier architecture. The retina provides address-event coded output on three asynchronous buses: one output dedicated to the gradient and the other two to the pixel values. A 64 × 64 pixel proof-of-concept chip was fabricated. A dedicated embedded platform including FPGA and ADCs has also been designed to evaluate the vision chip. Measured results show that the proposed sensor successfully captures raw images up to 10 000 frames per second and runs low-level image processing at a frame rate of 2000 to 5000 frames per second.Keywords
This publication has 32 references indexed in Scilit:
- A Parallel Face Detection System Implemented on FPGAPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2007
- Pixel noise suppression via SoC management of tapered reset in a 1920/spl times/1080 CMOS image sensorIEEE Journal of Solid-State Circuits, 2005
- Convolutional face finder: a neural architecture for fast and robust face detectionPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2004
- Design, Optimization, and Performance Analysis of New Photodiode Structures for CMOS Active-Pixel-Sensor (APS) Imager ApplicationsIEEE Sensors Journal, 2004
- Implementation of an rbf neural network on embedded systems: real-time face tracking and identity verificationIEEE Transactions on Neural Networks, 2003
- Photoresponse analysis and pixel shape optimization for CMOS active pixel sensorsIEEE Transactions on Electron Devices, 2003
- A 128×128 CMOS image sensor with analog memory for synchronous image captureIEEE Sensors Journal, 2002
- Empirical dark current modeling for complementary metal oxide semiconductor active pixel sensorOptical Engineering, 2002
- CMOS squarer and four-quadrant multiplierIEEE Transactions on Circuits and Systems I: Regular Papers, 1995
- Applications of a four-quadrant multiplierIEEE Journal of Solid-State Circuits, 1970