WORKSHOP PAPER
A CMOS HDR Imager with an Analog Local Adaptation
Gilles SICARD1, Hassan ABBAS1, Hawraa AMHAZ2,1, Hakim ZIMOUCHE3,1, Robin ROLLAND4, David ALLEYSSON5
1CNRS, G-INP, UJF, TIMA Laboratory, Laboratoire TIMA, 46, Avenue Félix Viallet, 38031 Grenoble, France
2CEA LETI, Grenoble, France
3LIRMM Laboratory, Montpellier, France
4CIME-Nanotech, 3 parvis Louis Néel, BP 257 38016 Grenoble, France
5CNRS, UPMF, LPNC Laboratory, Laboratoire LPNC, Université Pierre Mendes France, BP 47, 38040 Grenoble, France

Abstract

This work presents a CMOS HDR imager that incorporates an analog local adaptation method to encode the High Dynamic Range (HDR) of natural scenes, overcoming the limitations of basic CMOS imagers related to dynamic range and output limitations from the analog to digital converter (ADC). Through the implementation of a tone mapping technique within the pixel and an analog gamma correction at the ADC level, the paper highlights the reduction in digital computational cost, quantization noise, and power consumption, while avoiding the tone mapping procedure including the gamma correction.
Publisher: IISS (Int. Image Sensors Society)
Year: 2013
Workshop: IISW
URL: https://doi.org/10.60928/oltf-qff7
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Keywords

CMOS HDR Imager, Analog Local Adaptation, Dynamic Range,

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