Temporal Photoreception for Adaptive Dynamic Range Image Sensing and Encoding (1998)
| Citations: | 10 - 1 self |
BibTeX
@MISC{Brajovic98temporalphotoreception,
author = {Vladimir Brajovic and Ryohei Miyagawa and Takeo Kanade},
title = {Temporal Photoreception for Adaptive Dynamic Range Image Sensing and Encoding},
year = {1998}
}
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Abstract
We have implemented two analog VLSI computational sensors for sensing and encoding high dynamic range images by exploiting temporal dimension of photoreception. The first sensor is a multi-integration time photoreceptor that automatically adapts to use different integration periods depending on light intensity. It exhibits a dynamic range 128 times larger than that of a single integration period photoreceptor, approximately The second sensor is an intensity-to-time processing paradigm that is based on the notion that stronger stimuli elicit responses before weaker ones. The paradigm sorts pixels of sensed images by their intensities, thus achieving information-theoretic optimal encoding of images. It handles dynamic range of approximately 1: Both implementations can operate at standard video rate of frames 1998 Elsevier Science Ltd. All rights reserved.
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