Experimental measurement of modulation transfer function of a retina-like sensor

Fan Wang; Fengmei Cao; Tingzhu Bai; Nan Cao; Changju Liu; Guangping Deng

doi:10.1117/1.OE.53.11.113106

6 November 2014 Experimental measurement of modulation transfer function of a retina-like sensor

Fan Wang, Fengmei Cao, Tingzhu Bai, Nan Cao, Changju Liu, Guangping Deng

Author Affiliations +

Optical Engineering, Vol. 53, Issue 11, 113106 (November 2014). https://doi.org/10.1117/1.OE.53.11.113106

Abstract

The retina-like sensor is a kind of anthropomorphic visual sensor. It plays an important role in both biological and machine vision due to its advantages of high resolution in the fovea, a wide field-of-view, and minimum pixel count. The space-variant property of the sensor makes it difficult to directly measure its modulation transfer function (MTF). The MTF of a retina-like sensor is measured with the bar-target pattern method. According to the pixel arrangement, the sensor is divided into rings and the MTF of each ring is measured using spoke targets with different periods. Comparison between the measured MTF and the theoretical MTF of the sensor showed that they coincide. The differences between them are also analyzed and discussed. The measured MTF helps to analyze the performance of an imaging system containing a retina-like sensor.

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Fan Wang, Fengmei Cao, Tingzhu Bai, Nan Cao, Changju Liu, and Guangping Deng "Experimental measurement of modulation transfer function of a retina-like sensor," Optical Engineering 53(11), 113106 (6 November 2014). https://doi.org/10.1117/1.OE.53.11.113106

Published: 6 November 2014

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