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Selection in Photoshop.(using digital imaging software)
PSA Journal
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May 1, 1999|
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COPYRIGHT 1999 Photographic Society of America, Inc. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group.
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In digital imaging more time and effort is spent in making selections than in any other procedure. There are no difficulties in making easy selections by the various selection tools available in Photoshop. Difficulties arise when complicated and extensive selections have to be made. Is there a way, better than any other, of making such selections? I believe there is and in this article such a method is described. A method claiming to be better than most should fulfil the following criteria:
1. Have a high quality of selection.
2. Not involve a lengthy and ...
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Aberration-free IOL offers superior optical performance
Magazine article from: Ophthalmology Times
; ...decentered by 0.5 to 1 mm, the aberration-free lens outperformed the modified...views because non-axisymmetrical aberrations, such as coma and astigmatism...no splaying of the curve with an aberration-free IOL because it is immune...
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Negative spherical aberration after CK is desirable
Magazine article from: Ophthalmology Times
; ...Greater degree of negative spherical aberration seen with great number of spots applied San Diego-Inducing negative spherical aberration may be desirable after conductive keratoplasty...that patients with negative spherical aberration after CK met the target refractive error...
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New aspheric IOL designed to avoid inducing aberrations
Magazine article from: Ophthalmology Times
; ...spherical aberrations rather than...spherical aberration of the cornea...internal aberrations, the investigators...spherical aberration, the AO...spherical aberration Z4 (4...internal aberrations were high...
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Clonal and non-clonal chromosome aberrations and genome variation and aberration.(MINIREVIEW / MINISYNTHESE)(genomics research)(Abstract also in French)
Magazine article from: Genome
; ...experimental data. Genetic aberration at the chromosome level...key aspect of genome aberration and the systematic definition of chromosomal aberrations with their impact on...evolution, genome aberration and variation. Resume...seraient causes par des aberrations genomiques plutot que...
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The nature of chromosomal aberrations detected in humans exposed to benzene
Magazine article from: Critical Reviews in Toxicology
; KEY WORDS: benzene, chromosomal aberrations, cytogenetics, FISH, human, leukemia...lymphocytic leukemia; CA: chromosomal aberrations; CML: chronic myeloid leukemia; CS: stable chromosomal aberrations; C.: unstable chromosomal aberrations...
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New method for presenting ocular aberrations more user-friendly
Magazine article from: Ophthalmology Times
; ...higher-order aberration, to illustrate...different aberrations can have different...describing aberrations, noted that...spherical aberration represent...of only one aberration in isolation...Clinically, aberrations can exist...
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Aspheric IOL designed with goal of aberration-free or neutral lens
Magazine article from: Ophthalmology Times
; ...has no spherical aberration and will therefore...existing higher-order aberrations. Louis D. "Skip...add further spherical aberration to the ocular system...1OL has no spherical aberration and will therefore...existing higher-order aberrations.
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Wavefront-guided ablations reduce spherical aberrations
Magazine article from: Ophthalmology Times
; ...higher-order aberrations. "Work published...increased spherical aberration five- to 10...the spherical aberrations are typically...Spherical aberrations reduced "In...induced spherical aberration to a slight...
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Japanese Inventors Develop Spherical Aberration Correction Controlling Device
News Wire article from: US Fed News Service, Including US State News
; ...Japan, have developed a spherical aberration correction control device and an optical...invention relates to a "spherical aberration correction control device for controlling a spherical aberration correction section for correcting a...
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Improving Functional Vision Through Elimination of Spherical Aberration
Magazine article from: Ophthalmology Times
; ...spherical aberration to reduce total ocular aberrations.10 More...total ocular aberrations are actually...the corneal aberration because of...spherical aberration, the modified...total ocular aberrations, thereby...
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