@article{daf1e35bb58341bb9043471f35c53a8a,
title = "ILLUMINATION FOR COMPUTER VISION SYSTEMS.",
abstract = "Video cameras and light source should be matched to wavelengths corresponding to peak human eye sensitivity if it is desired to represent human vision. An infrared blocking filter was very helpful. Blue and green color filters also aided in detection of surface features. Equations for calculating needed lens extender lengths were used to match the field of view to the object size. A diffuse lighting chamber was found effective in eliminating shadows, specular reflection, and in preserving well-defined edges. High contrast between an image and its background was obtained using a dark colored filter as a background.",
author = "Paulsen, {M. R.} and McClure, {W. F.}",
note = "Funding Information: Pulmonary capillary wedge pressure (PCWP) is an important index of cardiac function and has been shown to correlate with symptoms, exercise capacity, and prognosis in patients with known heart disease. 1-3 Unfortunately, the assessment of PCWP requires an invasive, somewhat uncomfortable, and potentially dangerous procedure. Moreover, in patients with chronic heart failure (CHF), repeated diagnostic procedures are often required to monitor the evolution From the Division of Cardiology, {"}Salvatore Maugeri{"} Foundation, IRCCS, Medical Center of Rehabilitation, Veruno (NO), Italy, and the Cardiovascular Imaging Center, the Department of Cardiology, Cleveland Clinic Foundation (M.S.F., J.D.T.). Drs Firstenberg and Thomas are supported in part by Grant 1R01HL56688-01AI, National Hcart, Lung, and Blood institute, Bethesda, Md, and Grant NCC9-60, National Aeronautics and Space Administration, Houston, Tcx.",
year = "1986",
month = sep,
doi = "10.13031/2013.30328",
language = "English (US)",
volume = "29",
pages = "1398--1404",
journal = "Transactions of the American Society of Agricultural Engineers",
issn = "0001-2351",
publisher = "American Society of Agricultural and Biological Engineers",
number = "5",
}