Topic
High dynamic range
About: High dynamic range is a research topic. Over the lifetime, 4280 publications have been published within this topic receiving 76293 citations. The topic is also known as: HDR.
Papers published on a yearly basis
Papers
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01 Oct 2006TL;DR: In this article, a folded multiple capture (CMC) scheme is proposed to achieve high linearity and high SNR at low power consumption for 3D-IC IR focal plane arrays.
Abstract: The stringent performance requirements of many infrared imaging applications warrant the development of precision high dynamic range, high speed focal plane arrays. In addition to achieving high dynamic range, the readout circuits for these image sensors must achieve high linearity and SNR at low power consumption. Two high dynamic range image sensor schemes that have been developed for visible range imaging were reviewed first and discuss why they cannot meet the stringent performance demands of infrared imaging. A new dynamic range extension scheme, folded multiple capture, was then described that can meet these performance requirements. Dynamic range is extended using synchronous self-reset while high SNR is maintained using few non-uniformly spaced captures and least-squares fit to estimate pixel photocurrent. The paper concludes with a description of a prototype of this architecture targeted for 3D-IC IR focal plane arrays
33 citations
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01 Jul 2017TL;DR: A novel coded-exposure high-dynamic-range imaging technique, specifically designed to operate on the grids AC lighting, which yields unmixing of reflections and semi-reflections, nocturnal high dynamic range, and scene rendering with bulbs not observed during acquisition.
Abstract: Night beats with alternating current (AC) illumination. By passively sensing this beat, we reveal new scene information which includes: the type of bulbs in the scene, the phases of the electric grid up to city scale, and the light transport matrix. This information yields unmixing of reflections and semi-reflections, nocturnal high dynamic range, and scene rendering with bulbs not observed during acquisition. The latter is facilitated by a database of bulb response functions for a range of sources, which we collected and provide. To do all this, we built a novel coded-exposure high-dynamic-range imaging technique, specifically designed to operate on the grids AC lighting.
33 citations
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TL;DR: Tristimulus colour calibration procedures for high dynamic range photography are developed to measure circadian lighting and demonstrate that measurements from high dynamicrange photographs can correspond to the physical quantity of circadian luminance with reasonable precision and repeatability.
Abstract: The human ocular system functions in a dual manner. While the most well-known function is to facilitate vision, a growing body of research demonstrates its role in resetting the internal body clock...
33 citations
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03 Dec 2010TL;DR: An intensity mapping function (IMF) based scheme to detect moving objects in a set of low dynamic range images with different known exposure times to remove ghosting artifacts from the eventual high dynamic range (HDR) image is proposed.
Abstract: In this paper, we propose an intensity mapping function (IMF) based scheme to detect moving objects in a set of low dynamic range (LDR) images with different known exposure times. The objective is to remove ghosting artifacts from the eventual high dynamic range (HDR) image. Our contributions include a bidirectional similarity detection method, an adaptive threshold for movement detection, and an IMF based method for the synthesis of pixels to fill in the regions of moving objects. Experimental results show that the proposed scheme outperforms existing schemes.
32 citations
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01 Jan 2004
TL;DR: This method provides a way of rendering natural images that is inspired by human local adaptation that is included into a framework that takes raw linear images or radiance maps and outputs 24-bit images rendered for display.
Abstract: We present a new adaptation of Retinex to enhance the rendering of high dynamic range digital color images. The image is processed using an adaptive Gaussian filter. The shape of the filter basis is adapted to follow the high contrasted edges of the image. In this way, the artifacts introduced by a circularly symmetric filter at the border of high contrasted areas are reduced. This method provides a way of rendering natural images that is inspired by human local adaptation. It is included into a framework that takes raw linear images or radiance maps and outputs 24-bit images rendered for display.
32 citations