Results 51 to 60 of about 46,927 (198)

No-Reference Image Quality Assessment Method Based on Visual Parameters

open access: yesJournal of Electronic Science and Technology, 2019
Recent studies on no-reference image quality assessment (NR-IQA) methods usually learn to evaluate the image quality by regressing from human subjective scores of the training samples. This study presented an NR-IQA method based on the basic image visual
Yu-Hong Liu, Kai-Fu Yang, Hong-Mei Yan
doaj   +1 more source

Luminance calibration of virtual reality displays in Unity

open access: gold, 2022
Richard Murray   +2 more
openalex   +1 more source

Luminous Hot Accretion Disks [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2001
We find a new two-temperature hot branch of equilibrium solutions for stationary accretion disks around black holes. In units of Eddington accretion rate defined as $10L_{\rm Edd}/c^2$, the accretion rates to which these solutions correspond are within the range $\dot{m}_1 \la \dot{m} \la 1$, here $\dot{m}_1$ is the critical rate of advecti$.
openaire   +3 more sources

Suprathreshold Contrast Matching between Different Luminance Levels

open access: hybrid, 2022
Maliha Ashraf   +3 more
openalex   +1 more source

Influence of various angles and distances on luminance measurement results

open access: yesActa Polytechnica CTU Proceedings
The behaviour of drivers in nocturnal conditions is primarily influenced by the early detection of obstacles within the roadway. A reliable approach to evaluate night-time traffic environments is through luminance analysis.
Jan Bartoníček   +2 more
doaj   +1 more source

The Effect of Colour and Luminance on the Lightbox Wayfinding Sign Legibility in Metro Stations

open access: yesSAGE Open
Lightbox luminance and colour play an important role in improving the legibility of metro directional signs. However, there are currently no relevant design and technical standards.
Li Quan   +4 more
doaj   +1 more source

Beyond the Light Meter: A Case-Study on HDR-Derived Illuminance Calculations Using a Proxy-Lambertian Surface

open access: yesBuildings
Accurate illuminance measurements are critical in assessing lighting quality during post-occupancy evaluations, and traditional methods are labor-intensive and time-consuming. This pilot study demonstrates an alternative that combines high dynamic range (
Jackson Hanus   +2 more
doaj   +1 more source

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