Artículo
Gaussian Pyramid: Comparative Analysis of Hardware Architectures
Autor/es | Oliveira, Fernanda DV.R.
Gomes, José Gabriel Fernández Berni, Jorge Carmona Galán, Ricardo Río Fernández, Rocío del Rodríguez Vázquez, Ángel Benito |
Departamento | Universidad de Sevilla. Departamento de Electrónica y Electromagnetismo |
Fecha de publicación | 2017 |
Fecha de depósito | 2019-08-22 |
Publicado en |
|
Resumen | This paper addresses a comparison of architectures for the hardware implementation of Gaussian image pyramids. Main differences between architectural choices are in the sensor front-end. One side is for architectures ... This paper addresses a comparison of architectures for the hardware implementation of Gaussian image pyramids. Main differences between architectural choices are in the sensor front-end. One side is for architectures consisting of a conventional sensor that delivers digital images and which is followed by digital processors. The other side is for architectures employing a non-conventional sensor with per-pixel embedded preprocessing structures for Gaussian spatial filtering. This later choice belongs to the general category of “artificial retina” sensors which have been for long claimed as potentially advantageous for enhancing throughput and reducing energy consumption of vision systems. These advantages are very important in the internet of things context, where imaging systems are constantly exchanging information. This paper attempts to quantify these potential advantages within a design space in which the degrees of freedom are the number and type of ADCs, single-slope, SAR, cyclic, ΣΔ , and pipeline, and the number of digital processors. Results show that speed and energy advantages of preprocessing sensors are not granted by default and are only realized through proper architectural design. The methodology presented for the comparison between focal-plane and digital approaches is a useful tool for imager design, allowing for the assessment of focal-plane processing advantages. |
Identificador del proyecto | 141288/2014-0
204382/2014-9 E-26/200.350/2016 TEC2015-66878-C3-1-R TIC 2338-2013 N000141410355 |
Cita | Oliveira, F.D.R., Gomes, J.G., Fernández Berni, J., Carmona Galán, R., Río Fernández, R.d. y Rodríguez Vázquez, Á.B. (2017). Gaussian Pyramid: Comparative Analysis of Hardware Architectures. IEEE Transactions on Circuits and Systems - I - Regular Papers, 64 (9), 2308-2321. |
Ficheros | Tamaño | Formato | Ver | Descripción |
---|---|---|---|---|
Gaussian Pyramid.pdf | 473.2Kb | [PDF] | Ver/ | |