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Models for Pixels With Wide-Dynamic-Range Combined Linear and Logarithmic Response

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2 Author(s)
Bhaskar Choubey ; Univ. of Oxford, Oxford ; Steve Collins

Previously, pixels have been proposed that combine the low-light sensitivity of linear pixels with the high dynamic range of pixels that have a logarithmic response. In this paper, a model for this type of pixel is presented that represents the response of the pixel over a wide range of photocurrents. Simulation and measurement results are presented to validate the model and to show that there is a simple procedure for determining the parameters of the model.

Published in:

IEEE Sensors Journal  (Volume:7 ,  Issue: 7 )