MTF evaluation of white pixel sensors

Albrecht Lindner; Kalin Atanassov; Jiafu Luo; Sergio Goma

doi:10.1117/12.2080193

8 February 2015 MTF evaluation of white pixel sensors

Albrecht Lindner, Kalin Atanassov, Jiafu Luo, Sergio Goma

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Proceedings Volume 9396, Image Quality and System Performance XII; 939608 (2015) https://doi.org/10.1117/12.2080193
Event: SPIE/IS&T Electronic Imaging, 2015, San Francisco, California, United States

Abstract

We present a methodology to compare image sensors with traditional Bayer RGB layouts to sensors with alternative layouts containing white pixels. We focused on the sensors’ resolving powers, which we measured in the form of a modulation transfer function for variations in both luma and chroma channels. We present the design of the test chart, the acquisition of images, the image analysis, and an interpretation of results. We demonstrate the approach at the example of two sensors that only differ in their color filter arrays. We confirmed that the sensor with white pixels and the corresponding demosaicing result in a higher resolving power in the luma channel, but a lower resolving power in the chroma channels when compared to the traditional Bayer sensor.

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Albrecht Lindner, Kalin Atanassov, Jiafu Luo, and Sergio Goma "MTF evaluation of white pixel sensors", Proc. SPIE 9396, Image Quality and System Performance XII, 939608 (8 February 2015); https://doi.org/10.1117/12.2080193

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KEYWORDS

Sensors

Modulation transfer functions

Spectral resolution

Image sensors

RGB color model

Zone plates

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