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Objective HDR image quality assessment
Multimedia Tools and Applications, 2018Although there is a lot of literature about generating HDR images, very limited research has been conducted on the issue of HDR image quality based on people’s feeling and preferences. The goal of this paper is to identify an objective quality measurement of an HDR image.
Chih-Yang Lin +2 more
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Glare-limited Appearances in HDR Images
Color and Imaging Conference, 2007Appearance in High Dynamic Range (HDR) images is controlled by intraocular glare and simultaneous contrast. This paper describes unique test targets that simulate real images. They change the HDR range by 500 times without significantly changing the veiling glare on the retina. As well, these targets have nearly constant simultaneous contrast.
A. Rizzi, M. Pezzetti, J. J. McCann
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Shape Recovery Using HDR Images
Computer Graphics, Imaging and Visualisation (CGIV 2007), 2007In this paper, an effective method for shape recovery using HDRI (high dynamic range images) is proposed. Firstly, an accurate reflectance map for a reference sphere relating its radiance values and corresponding normals is established, then the set of candidate normals of each target point comprising the same material are found by comparing its ...
Zuoyong Zheng, Lizhuang Ma, Zhou Zeng
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Glare‐limited appearances in HDR images
Journal of the Society for Information Display, 2009Abstract— Intraocular glare and simultaneous contrast control appearance in high‐dynamic‐range (HDR) images. This paper describes unique test targets that simulate real images. These targets change the HDR range by 500 times, without significantly changing the veiling glare on the retina.
A. Rizzi, J. J. McCann
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Viewpoint adaptive display of HDR images
2017 IEEE International Conference on Image Processing (ICIP), 2017In this paper viewpoint adaptive display of HDR images incorporating the effects of ambient light is presented and evaluated. LED backlight displays may render HDR images, but while at a global scale a high dynamic range may be achieved, locally the contrast is limited by the leakage of light through the LC elements of the display.
Søren Forchhammer, Claire Mantel
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On-chip compression for HDR image sensors
2010 Conference on Design and Architectures for Signal and Image Processing (DASIP), 2010An image compressing technique for High Dynamic Range (HDR) image sensors is introduced. Compression is performed in two steps: Pixel value coding optimization followed by DCT-based (Discrete Cosine Transform) compression. A floating point coding technique is first used with a common exponent shared between pixels of the same block, and then a DCT is ...
Fadoua Guezzi Messaoud +3 more
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Chromatic coordinates in HDR image coding
SPIE Proceedings, 2008The paper presents an undertaking to develop most compact high dynamic range image compression format and shows that chromatic color coordinate system plays a central role in such development. Important design considerations, such as conditions and criterions of data accuracy, efficiency and characteristics of color space, are addressed along the way ...
Sergey N. Bezryadin +2 more
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Evaluating deghosting algorithms for HDR images
2014 22nd Signal Processing and Communications Applications Conference (SIU), 2014The real world encompasses a high range of luminances. In order to capture and represent this range correctly, High Dynamic Range (HDR) imaging techniques are introduced. Some of these techniques are based on constructing an HDR image from several Low Dynamic Range (LDR) images with different exposures. In the capture and reconstruction phases, the HDR
Okan Tarhan Tursun +3 more
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Tuning Retinex for HDR Images Visualization
Conference on Colour in Graphics, Imaging, and Vision, 2004In some cases, consumer devices (monitors, printers, cameras, etc) do not allow us to capture or reproduce the full range of luminance information of a synthetic or real scene. Many techniques have been proposed in the last years, that address the tone mapping problem (i.e.
D. Gadia, D. Marini, A. Rizzi
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Evaluation of a Local Descriptor for HDR Images
Proceedings of the 17th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications, 2022Artur Santos Nascimento +3 more
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