Title :
Acquisition of noise-free and noisy signal: effect of different staring focal-plane-array pixel geometry
Author :
Iftekharuddin, K.M. ; Karim, M.A.
Author_Institution :
Dept. of Electr. Eng., Dayton Univ., OH, USA
Abstract :
Spatial averaging technique has been used to compare the signal acquisition performance of hexagonally sampled arrays with rectangular, hexagonal and rhombic pixel shapes of equivalent area. In noise-free case, a modulation transfer function (MTF) value, which is almost similar to the MTF of the rectangular pixel shape, is obtained for the rhombic pixel shape. However, in detecting noisy signal, the probability density function (pdf) of the detected signal of the rhombic pixel geometry lies in between that of the other two pixel shapes
Keywords :
digital simulation; electronic engineering computing; image processing; image sensors; optical transfer function; probability; random noise; signal detection; MTF; hexagonal pixel shapes; hexagonally sampled arrays; modulation transfer function; noise-free signal; noisy signal; probability density function; rectangular pixel shapes; rhombic pixel shapes; signal acquisition performance; spatial averaging; staring focal-plane-array pixel geometry; Detectors; Frequency domain analysis; Lattices; Noise shaping; Optical devices; Optical noise; Optical sensors; Sampling methods; Sensor arrays; Shape;
Conference_Titel :
Aerospace and Electronics Conference, 1993. NAECON 1993., Proceedings of the IEEE 1993 National
Conference_Location :
Dayton, OH
Print_ISBN :
0-7803-1295-3
DOI :
10.1109/NAECON.1993.290781
