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:
Sensors Journal, IEEE
(Volume:7
,
Issue:
7
)
Date of Publication: July 2007