نتایج جستجو برای: image brightness

تعداد نتایج: 389586  

Journal: :Remote Sensing 2015
Agnieszka Tarko Sytze de Bruin Dominique Fasbender Wim Devos Arnold Bregt

Land cover identification and area quantification are key aspects of implementing the European Common Agriculture Policy. Legitimacy of support provided to farmers is monitored using the Land Parcel Identification System (LPIS), with land cover identification performed by visual image interpretation. While the geometric orthoimage quality required for correct interpretation is well understood, ...

Journal: :AJNR. American journal of neuroradiology 1994
G J Harris P E Barta L W Peng S Lee P D Brettschneider A Shah J D Henderer T E Schlaepfer G D Pearlson

PURPOSE To describe a quantitative MR imaging segmentation method for determination of the volume of cerebrospinal fluid, gray matter, and white matter in living human brain, and to determine the method's reliability. METHODS We developed a computer method that allows rapid, user-friendly determination of cerebrospinal fluid, gray matter, and white matter volumes in a reliable manner, both gl...

2013
S. P. Amila Vayanganie Mahendra Fernando Upul Sonnadara

Luminosity variations of natural cloud-to-ground lightning flashes were studied by analyzing a set of high speed video recordings. The frame rate and resolution of the camera was 5000 fps at 512×512 pixel resolution. The frames were stored as black and white sequence (SEQ) files which were converted to sequence of image files using the software provided by the camera. Algorithms were developed ...

Journal: :Investigative ophthalmology & visual science 1995
J M Miller H L Hall J E Greivenkamp D L Guyton

PURPOSE To measure quantitatively the change in the coaxial fundus reflex with varying degrees of ocular misalignment. METHODS The coaxial fundus reflex was imaged with a charge coupled device camera under conditions of simulated ocular misalignment ranging from 0 degrees to 7 degrees of fixation eccentricity. The effects of refractive error and pupil size were controlled. Average gray scale ...

Journal: :Vision Research 2011
Frederick A.A. Kingdom

The past quarter century has witnessed considerable advances in our understanding of Lightness (perceived reflectance), Brightness (perceived luminance) and perceived Transparency (LBT). This review poses eight major conceptual questions that have engaged researchers during this period, and considers to what extent they have been answered. The questions concern 1. the relationship between light...

Journal: :Journal of Environmental Engineering (Transactions of AIJ) 2017

Journal: :International Journal of Engineering & Technology 2018

2013
Zhongyi Hu Qiu Liu

Due to environmental pollution, the climate is worsening. The fog days up to 60% of the year in inland certain segments, which it has seriously affected the marine electronic cruise normal operation and navigation safety. According to the inland video image becomes gray and lack of visibility in foggy weather conditions, and in order to remove the haze to get a clear image color and contour, th...

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