Article
Low-Power CMOS Vision Sensor for Gaussian Pyramid Extraction
Author/s | Suárez Cambre, Manuel
Brea Sánchez, Víctor Manuel Fernández Berni, Jorge Carmona Galán, Ricardo Cabello, D. Rodríguez Vázquez, Ángel Benito |
Department | Universidad de Sevilla. Departamento de Electrónica y Electromagnetismo |
Publication Date | 2017 |
Deposit Date | 2018-04-27 |
Published in |
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Abstract | This paper introduces a CMOS vision sensor chip in a standard 0.18 μm CMOS technology for Gaussian pyramid extraction. The Gaussian pyramid provides computer vision algorithms with scale invariance, which permits having ... This paper introduces a CMOS vision sensor chip in a standard 0.18 μm CMOS technology for Gaussian pyramid extraction. The Gaussian pyramid provides computer vision algorithms with scale invariance, which permits having the same response regardless of the distance of the scene to the camera. The chip comprises 176×120 photosensors arranged into 88×60 processing elements (PEs). The Gaussian pyramid is generated with a double-Euler switched capacitor (SC) network. Every PE comprises four photodiodes, one 8 b single-slope analog-to-digital converter, one correlated double sampling circuit, and four state capacitors with their corresponding switches to implement the double-Euler SC network. Every PE occupies 44×44 μm2 . Measurements from the chip are presented to assess the accuracy of the generated Gaussian pyramid for visual tracking applications. Error levels are below 2% full-scale output, thus making the chip feasible for these applications. Also, energy cost is 26.5 nJ/px at 2.64 Mpx/s, thus outperforming conventional solutions of imager plus microprocessor unit. |
Project ID. | N00014-14-1-0355
TEC2015-66878- C3-1-R TEC2015-66878-C3-3-R TIC 2338 EM2013/038 EM2014/012 |
Citation | Suárez Cambre, M., Brea Sánchez, V.M., Fernández Berni, J., Carmona Galán, R., Cabello, D. y Rodríguez Vázquez, Á.B. (2017). Low-Power CMOS Vision Sensor for Gaussian Pyramid Extraction. IEEE Journal of Solid State Circuits, 52 (2), 483-495. |
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