How are illumination levels calculated based on NBC?
Answers from top 9 papers
More filters
| Papers (9) | Insight |
|---|---|
01 Jul 1999 | The expense of global illumination computations is many orders of magnitude higher than the expense of direct illumination computations and can greatly benefit by applying our perceptually based technique. |
29 Citations | These data suggest that spatial brightness perceptions at photopic light levels are unrelated to the S/P ratio of the illumination. |
39 Citations | reading and watching TV, show that the preferred illumination levels in an activity space can be achieved and maintained, irrespective of external light variations. |
01 Jan 2019 16 Citations | Based on the obtained observations, an extension to any illumination estimation method is proposed that under certain conditions alters the results of the underlying method. |
01 Jan 2019 16 Citations | This effectively demonstrates that statistics-based methods can still be successfully used for illumination estimation in digital cameras. |
31 Aug 2005 8 Citations | Based on this analysis, we propose a novel set of features factoring out the illumination influence from the majority of the original features. |
86 Citations | We believe that a combination of these distinctive features could pave the way for a novel illumination model, which would be optimized based on our findings. |
27 Citations | They also suggest it will be worthwhile to explore whether and how the human visual system has internalized the statistics of natural illumination changes. |
| On standard single-illumination and multiple-illumination estimation benchmarks, GI outperforms state-of-the-art statistical methods and many recent deep methods. |
Related Questions
How to calculate resolution of gamma camera?5 answersTo calculate the resolution of a gamma camera, various methods and models have been developed. One approach involves predicting the camera's response in terms of linearity and spatial resolution across the field of view using theoretical analysis and estimation theory. Another method utilizes the Cramer–Rao lower bound (CRLB) to investigate the sensitivity of energy and spatial resolution to parameters like EM gain and depth-of-interaction, providing insights into performance factors. Additionally, mathematical techniques such as cubic spline interpolation have been tested for extracting the full width at half maximum (FWHM) from line source acquisitions, offering a reliable and efficient means of determining resolution with uncertainty considerations. These approaches collectively contribute to the comprehensive understanding and calculation of the resolution of gamma cameras.
When measuring the radiation of a blackbody with an FTIR spectrometer, how to calculate the radiance?4 answersRadiance of a blackbody measured with an FTIR spectrometer can be calculated using a semi-analytical method that takes advantage of polylogarithm functions. This method simplifies the solution and allows for the calculation of the total radiance received between two frequencies. By applying this method, the amount of radiation from the sun received by bodies at Earth's surface can be studied.
How does lighting level impact vision?5 answersLighting level has a significant impact on vision. Higher ambient illumination levels have been shown to improve visual performance, including acuity, contrast sensitivity, color discrimination, depth perception, and motion perception. On the other hand, low luminance levels can reduce visual performance, especially in low contrast conditions. Changes in lighting levels can also affect visual adaptation, with dark adaptometry and glare recovery being commonly used clinical tests. Additionally, lighting conditions can influence alertness and discomfort, with the orientation of light fixtures playing a role in participant sleepiness and weariness. Overall, lighting level is an important factor to consider in both indoor and outdoor environments, as it can impact visual acuity, contrast sensitivity, adaptation, and subjective experiences such as alertness and discomfort.
Who developed the calculation of NDVI?5 answersThe calculation of NDVI has been developed by multiple authors in the field of remote sensing and image processing. The authors of Context_1, Context_2, Context_4, and Context_5 have all contributed to the development of NDVI calculation methods.
Who proposed NDVI calculation?5 answersThe Normalized Difference Vegetation Index (NDVI) calculation was proposed by Calota et al..
Which meter is used to measure illumination levels in facilities?9 answers