We propose shading the terrain under uniform diffuse illumination, where light arrives equally from all directions of a theoretical sky surrounding the terrain. Surface elements at lower elevations tend to have more of the sky obscured from view and are thus shaded darker. This tinting approach has...
The sphere is coated internally with matt white paint, which must have a uniform reflectivity throughout the visible spectrum (pure barium sulphate is the usual pigment for the topcoat). There are ports for the specimen to be measured, to admit the incident beam, and for viewing; the ...
A highly diffuse light field with incident light received from nearly all angles An intensity modulation better than 2:1 at 1 m depth and nearly homogeneous illumination at 2 m depth Light emitters with a nearly uniform (Lambertian) spatial emission pattern ...
spin-polarized currents or electric fields can favor the flip of spins and induce the creation of a single skyrmion. By leveraging a non-uniform device geometry or a naturally formed defect, a current pulse can also generate a single skyrmion7,12,13,14. In addition to electrical means, optic...
For example, optical device 115 may include a frosted plate of a transparent material to mix light from spectral channels 110-1 to 110-N and provide more spatially uniform lighting that combines light from all channels 110-1 to 110-N. Other combination methods such as light guides, beam ...
substantially the same from the first dichroic separator120to each of the imager devices114a-114c. This ensures that all image devices114a-114care illuminated using substantially identical illumination beams, so that the color and intensity properties of the resulting full color image are uniform. ...
Non-uniform Illumination Video Enhancement Based on Zone System and Fusion. In Proceedings of the 2018 24th International Conference on Pattern Recognition (ICPR), Beijing, China, 20–24 August 2018. [Google Scholar] Buades, A.; Lisani, J.L. Enhancement of noisy and compressed videos by ...
We use a multishot camera, called the “Snapscan” to acquire outdoor multispectral radiance images of plant parcels in a greenhouse under skylight [8]. From this radiance information, reflectance is estimated as an illumination-invariant spectral signature of each species. Several methods have ...
Carmanah’s overhead crosswalk lights also minimize the kind of dangerous glare that characterizes unshielded and non-directional lights by employing flat glass luminaires mounted parallel to the roadway (versus at an angle, where light can “leak” upward into the night sky, or into nearby residen...
a definite intensity, initiates a series of reactions that require the activation of rhodopsin photopigment.40In this sense, Williamset al,41using albino rats exposed to light with six different interference filters of narrow band-pass, showed a non-uniform distribution of damage across the retina...