Results 21 to 30 of about 990,498 (327)
ICTACT Journal on Image and Video Processing, 2022 At the present time photographic visual processing is rapidly moving towards the next stage. In addition, a variety of visual processing technologies are evolving, such as splitting image dimensions, calibration, pixel beautification, and high-resolution
J Logeshwaran +3 more
doaj +1 more source
Evidence for a Non-Expanding Universe: Surface Brightness Data From HUDF [PDF]
, 2005 Surface brightness data can distinguish between a Friedman-Robertson-Walker expanding universe and a non-expanding universe. For surface brightness measured in AB magnitudes per angular area, all FRW models, regardless of cosmological parameters, predict
Lerner, Eric J.
core +1 more source
A Morphological-type dependence in the mu_0-log(h) plane of Spiral galaxy disks [PDF]
, 2001 We present observational evidence for a galaxy `Type' dependence to the location of a spiral galaxy's disk parameters in the mu_0-log(h) (central disk surface-brightness - disk scale-length) plane.
Alister W. Graham +8 more
core +2 more sources
Intrinsic Brightness Temperature of Compact Radio Sources at 86 GHz [PDF]
, 2013 We present results on the intrinsic brightness temperature of a sample of compact radio sources observed at 86 GHz using the Global Millimeter VLBI Array.
Lee, Sang-Sung
core +1 more source
Química Nova, 2011 Samples of Kaolin from different regions in Brazil were characterized by XRD, SEM and chemical analysis. A chemical bleaching study with pH adjustment was accomplished with the fractions below 37 μm, after classification by screening.
Fernanda Arruda Nogueira Gomes da Silva +6 more
doaj +1 more source
Frontiers in Human Neuroscience, 2014 Previous work demonstrated that perceived surface reflectance (lightness) can be modeled in simple contexts in a quantitatively exact way by assuming that the visual system first extracts information about local, directed steps in log luminance, then ...
Michael E Rudd, Michael E Rudd
doaj +1 more source
Measuring night sky brightness: methods and challenges [PDF]
, 2017 Measuring the brightness of the night sky has become an increasingly important topic in recent years, as artificial lights and their scattering by the Earth’s atmosphere continue spreading around the globe.
A. Hanel +12 more
semanticscholar +1 more source
Contrast Enhancement of Brightness-Distorted Images by Improved Adaptive Gamma Correction [PDF]
Computers & electrical engineering, 2017 As an efficient image contrast enhancement (CE) tool, adaptive gamma correction (AGC) was previously proposed by relating gamma parameter with cumulative distribution function (CDF) of the pixel gray levels within an image.
Gang Cao +5 more
semanticscholar +1 more source
'Round the Clock Observations of the Q0957+561 A,B Gravitationally Lensed Quasar [PDF]
, 2001 An observing campaign with 10 participating observatories has undertaken to monitor the optical brightness of the Q0957 gravitationally lensed quasar for 10 consecutive nights in January 2000.
Alex Oscoz +23 more
core +1 more source
Sonification as a possible stroke rehabilitation strategy
Frontiers in Neuroscience, 2014 Despite cerebral stroke being one of the main causes of acquired impairments of motor skills worldwide, well-established therapies to improve motor functions are sparse.
Daniel S. Scholz +6 more
doaj +1 more source