The authors test 168 luminance-calibrated high dynamic range photographs with associated subjective user data against a set of plausible visual comfort metrics and identify metric thresholds at which discomfort can be consistently identified with minimal false-positives. Correlations were identified with vertical eye illuminance, DGI, DGP 5 ∗ Ltask, max. window luminance and max. workplane lumi...

measured HDRC Lars III C14 luminance output recovered resp. fitted resp. output recovered resp. fitted resp. recovered resp. [cd/m] 10 bit [cd/m] [cd/m] 16 bit [cd/m] [cd/m] [cd/m] 5.3 404 4.78 4.57 200 9.04 8.69 5.38 9.3 424 7.95 8.12 366 9.35 11.52 9.05 70.9 497 46.70 62.65 3,278 62.46 61.33 66.07 741.2 582 403.22 695.22 18,722 643.96 663.00 704.43 8,796 673 8,616.82 8,924.89 32,126 4,196.72 ...

The goal of this project is to compute a bound on the minimum error inherent in rendering a floating point image on a high dynamic range (HDR) display. The standard methods for rendering to this and similar devices will need to be real time. While they will employ the computation power of the GPU, many shortcuts which can affect image quality will be required in order to obtain interactive fram...

In the consumer digital photography market we have nearly all images stored in the JPEG compression format. While many new compression methods were proposed for providing somewhat better compression, and also a variety of new features, most users currently do not see compelling reasons for adopting new formats. The high dynamic range feature seems to be an exception, standing out in its appeal ...

High dynamic range images must be tone mapped before being displayed on devices with low output dynamic range. Two existing global tone mapping operators are evaluated and then a new improved operator using a sigmoid compression curve is proposed. It is then demonstrated through simulation and experimental results that an existing capture device, used previously only for simple logarithmic comp...

High Dynamic Range (HDR) images represent the future format for digital images since they allow more sensitive rendering. However, nowadays special types of preprocessing collectively known as tone mapping operators are needed to adapt HDR images to currently existing displays. Tone mapped images, although of reduced dynamic range, have nonetheless high quality and hence retain some commercial ...

High dynamic range digital audio is the next frontier in audio reproduction. Achieving it means removing the many errors that typically compromise accuracy and thus the sense of realism that enthusiasts desire. High dynamic range starts with the power supply, then the digital-to-analog conversion, and continues right through to the speakers’ output. If the DAC is flawed then nothing that follow...

Spectral filter arrays imaging exhibits a strong similarity with color filter arrays. This permits us to embed this technology in practical vision systems with little adaptation of the existing solutions. In this communication, we define an imaging pipeline that permits high dynamic range (HDR)-spectral imaging, which is extended from color filter arrays. We propose an implementation of this pi...

This paper presents a novel framework to extend the dynamic range of images called Unbounded High Dynamic Range (UHDR) photography with a modulo camera. A modulo camera could theoretically take unbounded radiance levels by keeping only the least significant bits. We show that with limited bit depth, very high radiance levels can be recovered from a single modulus image with our newly proposed u...

We describe the design and implementation of a high dynamic range (HDR) imaging system capable of capturing RGB color images with a dynamic range of 10,000,000 : 1 at 25 frames per second. We use a highly programmable camera unit with high throughput A/D conversion, data processing and data output. HDR acquisition is performed by multiple exposures in a continuous rolling shutter progression ov...