Veiling glare in high dynamic range imaging
نویسندگان
چکیده
منابع مشابه
Veiling glare and perceived black in high dynamic range displays.
A perceptual experiment was conducted to measure the visibility of black-level differences in the proximity of a bright glare source. In a controlled viewing environment, visual difference thresholds were adaptively measured using dark, shadow-detail images shown on a high dynamic range liquid crystal display while an external LED lamp was used to induce intra-ocular glare over a small range of...
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In our paper, we introduced a low energy, high frequency, shift variant component ρ̂ of the light transport function H, that captures cross-screen filter diffraction effects rS present in the captured image. In this section, we derive statistical properties of this function rS which we use in our paper (Equation 9 in the paper). First, we present empirical properties of derivatives of ρ̂ , and th...
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High dynamic range (HDR) images and video contain pixels, which can represent much greater range of colors and brightness levels than that offered by existing, standard dynamic range images. Such “better pixels” greatly improve the overall quality of visual content, making it appear much more realistic and appealing to the audience. HDR is one of the key technologies of the future imaging pipel...
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High-dynamic-range (HDR) images are superior to conventional images. The experiments in this paper measure camera and human responses to calibrated HDR test targets. We calibrated a 4.3-log-unit test target, with minimal and maximal glare from a changeable surround. Glare is an uncontrolled spread of an image-dependent fraction of scene luminance in cameras and in the eye. We use this standard ...
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Most imaging sensors have a limited dynamic range and hence can satisfactorily respond to only a part of illumination levels present in a scene. This is particularly disadvantageous for omnidirectional and panoramic cameras since larger elds of view have larger brightness ranges. We propose a simple modi cation to existing high resolution omnidirectional/panoramic cameras in which the process o...
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ژورنال
عنوان ژورنال: ACM Transactions on Graphics
سال: 2007
ISSN: 0730-0301,1557-7368
DOI: 10.1145/1276377.1276424