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The Appropriateness of Contrast Metric for Reaction Times
(Pion Ltd, 2016-04)
We analyzed different contrast metrics to scale the stimulus strength for suprathreshold reaction times (RTs) when it is modulated along an achromatic channel (L þ M) and both chromatic channels L/M and S/(L þ M) considering ...
Segmentation of Cell Nuclei Regions in Epithelium of Prostate Glands
(2012)
This paper proposes a method for segmentation of cell nuclei regions in epithelium of prostate glands. This structure provides information to diagnosis and prognosis of prostate cancer. In the initial step, the contrast ...
The time course of the lower threshold of motion during rapid events of adaptation
(Pergamon-Elsevier Science Ltd, 2001-04)
To examine how the time course of rapid events of adaptation affect motion vision, the lower threshold of motion (LTM) was measured for suprathreshold sinusoidal gratings in presence of transient and steady glare. In the ...
Transient glare: its effect on the lower threshold of motion
(Optical Society of America, 2000-08)
We measured the lower threshold of motion (LTM) of suprathreshold gratings as a function of spatial frequency and contrast, for both transient glare and no-glare conditions. A two alternatives forced choice paradigm, using ...
Straylight and Visual Quality on Early Nuclear and Posterior Subcapsular Cataracts
(Taylor, 2016-09)
Purpose: To measure log(s) and OSI parameters, both related to forward light scattering in the eye, in subjects with different kinds of early cataracts—nuclear or posterior subcapsular—and corrected visual acuity (CVA). ...
Unsupervised segmentation method for cuboidal cell nuclei in histological prostate images based on minimum cross entropy
(2013-08-12)
This paper presents a novel segmentation method for cuboidal cell nuclei in images of prostate tissue stained with hematoxylin and eosin. The proposed method allows segmenting normal, hyperplastic and cancerous prostate ...
Unsupervised segmentation method for cuboidal cell nuclei in histological prostate images based on minimum cross entropy
(2013-08-12)
This paper presents a novel segmentation method for cuboidal cell nuclei in images of prostate tissue stained with hematoxylin and eosin. The proposed method allows segmenting normal, hyperplastic and cancerous prostate ...
Chloride ingress rate and threshold content, as determined by the ‘Integral’ test method, in concrete with several w/c ratios in saturated and unsaturated conditions
(Elsevier, 2021-09)
The ‘integral’ test method aims at the simultaneous determination of the chloride migration rate and chloride threshold content. This information is required for durability performance design of reinforced concrete structures ...