Título

Design of an access system for a bidimensional sensors array

Autor

HECTOR CHRISTIAN BANDALA HERNANDEZ

Colaborador

ALEJANDRO DIAZ SANCHEZ (Asesor de tesis)

JOSE MIGUEL ROCHA PEREZ (Asesor de tesis)

Nivel de Acceso

Acceso Abierto

Resumen o descripción

In the last few years, the focus on the vision systems research has increased due

to multiple demands of performance, power consumption and integration area.

Hence, a need for the design and manufacturing of Intelligent Sensors systems

has arised. A particular type of Intelligent Sensors are Vision Chips, which

have demonstrated to be ecient facing image processing and real time pro-

cessing issues. Vision Chips are classied as intelligent sensors because their

main goals are photodetection and image processing, and both assignments

are performed in a single chip. Currently, the development of two-dimensional

arrays of sensors is mainly focused on biomedical, astronomical and military

applications.

Recently, vision chips based on CMOS image sensors are competing with the

Charged Coupled Devices (CCDs). Since CCD's fabrication process is com-

plex and expensive, the studies on CMOS Image Sensors have considerably

increased.

Therefore, both CCD and CMOS have their particular advantages, which

makes the convenience of the use of one over the other depending on the task

requirements. Consequently it is not possible to claim about a dominant tech-

nology over its counterpart.

Besides of the sensor type, it is of great importance having amplifying and l-

tering stages whose fulll required design constraints like power consumption,

area, supply voltage, speed, cost, impulsive noise, shot noise, Fixed Pattern

Noise (FPN), thermal noise and image quality.

In that fashion, a large number of Pixel and Readout topologies have been

developed. Similarly, several studies, analyses and comparatives about how

ltering certain types of noise on corrupted images have been also reported.

This work presents the design and implementation of a Vision Chip using pre-

processing in-pixel low-power techniques with digital controlled access to the

pixel array. Also, the settling of the basis to future work is established by

material properties and features to optimize photodetectors design.

Editor

Instituto Nacional de Astrofísica, Óptica y Electrónica

Fecha de publicación

diciembre de 2013

Tipo de publicación

Tesis de maestría

Versión de la publicación

Versión aceptada

Formato

application/pdf

Idioma

Inglés

Audiencia

Estudiantes

Investigadores

Público en general

Sugerencia de citación

Bandala-Hernandez H.C.

Repositorio Orígen

Repositorio Institucional del INAOE

Descargas

268

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