scholarly journals The synthesis and application of novel benzodithiophene based reactive mesogens with negative wavelength dispersion birefringence

2021 ◽  
Author(s):  
Martin Heeney ◽  
Kevin Adlem ◽  
James Allen
Keyword(s):  
Grey Scale ◽  
Contrast Reduction ◽  
Reactive Mesogens

Optical corrective retardation films are widely used in the display industry to compensate for a variety of imperfections such as off-axis contrast reduction, grey-scale inversion and colour shifts in LCDs...

Two structural states of the Z-band in cardiac and skeletal muscle

1989 ◽  
Vol 47 ◽  
pp. 1022-1023
Author(s):  
J.P. Schroeter ◽  
M.A. Goldstein ◽  
J.P. Bretaudiere ◽  
L.H. Michael ◽  
R.L. Sass
Keyword(s):  
Skeletal Muscle ◽  
Cross Section ◽  
Real Space ◽  
Contractile State ◽  
Contour Maps ◽  
False Color ◽  
Grey Scale ◽  
Fourier Filtering ◽  
Cardiac Muscles ◽  
Enhancement Algorithm

We have recently established the existence of two structural states of the Z band lattice in cross section in cardiac as well as in skeletal muscle. The two structural states are related to the contractile state of the muscle. In skeletal muscle at rest, the Z band is in the small square (ss) lattice form, but tetanized muscle exhibits the basket weave (bw) form. In contrast, unstimu- lated cardiac muscle exhibits the bw form, but cardiac muscles exposed to EGTA show the ss form.We have used two-dimensional computer enhancement techniques on digitized electron micrographs to compare each lattice form as it appears in both cardiac and skeletal muscle. Both real space averaging and fourier filtering methods were used. Enhanced images were displayed as grey-scale projections, as contour maps, and in false color.There is only a slight difference between the lattices produced by the two different enhancement techniques. Thus the information presented in these images is not likely to be an artifact of the enhancement algorithm.

Non-invasive ultrasound-based imaging of atherosclerosis

VASA ◽  
2019 ◽  
Vol 48 (2) ◽  
pp. 126-133 ◽  
Author(s):  
Mathias Kaspar ◽  
Iris Baumgartner ◽  
Daniel Staub ◽  
Heinz Drexel ◽  
Christoph Thalhammer
Keyword(s):  
Large Population ◽  
Treatment Strategies ◽  
Intima Media Thickness ◽  
Scientific Work ◽  
Flow Mediated Dilation ◽  
Non Invasive ◽  
Grey Scale ◽  
Current Review ◽  
Appropriate Treatment ◽  
Contrast Enhanced

Abstract. Early detection of vascular damage in atherosclerosis and accurate assessment of cardiovascular risk factors are the basis for appropriate treatment strategies in cardiovascular medicine. The current review focuses on non-invasive ultrasound-based methods for imaging of atherosclerosis. Endothelial dysfunction is an accepted early manifestation of atherosclerosis. The most widely used technique to study endothelial function is non-invasive, flow-mediated dilation of the brachial artery under high-resolution ultrasound imaging. Although an increased intima-media thickness value is associated with future cardiovascular events in several large population studies, systematic use is not recommended in clinical practice for risk assessment of individual persons. Carotid plaque analysis with grey-scale median, 3-D ultrasound or contrast-enhanced ultrasound are promising techniques for further scientific work in prevention and therapy of generalized atherosclerosis.

Color and grey scale in sonar displays

1984 ◽  
Author(s):  
K.-F. Kraiss ◽  
K.-H. Kuttelwesch
Keyword(s):  
Grey Scale

EVALUATION OF FOCAL RENAL LESIONS WITH CONTRAST ENHANCED GREY-SCALE HARMONIC ULTRASOUND

2005 ◽  
Vol 26 (S 1) ◽  
Author(s):  
F Frauscher ◽  
L Pallwein ◽  
J Gradl ◽  
M Schurich ◽  
A Pelzer ◽  
...  
Keyword(s):  
Renal Lesions ◽  
Grey Scale ◽  
Contrast Enhanced

CIE 228:2018 GREY-SCALE CALCULATION FOR SELF-LUMINOUS DEVICES

2018 ◽  
Author(s):  
Rob Carter ◽  
M Ayama ◽  
P Green ◽  
E Krupinski ◽  
C Oleari ◽  
...  
Keyword(s):  
Grey Scale

scholarly journals Fractional-Order Colour Image Processing

Mathematics ◽  
2021 ◽  
Vol 9 (5) ◽  
pp. 457
Author(s):  
Manuel Henriques ◽  
Duarte Valério ◽  
Paulo Gordo ◽  
Rui Melicio
Keyword(s):  
Image Processing ◽  
Edge Detection ◽  
Fractional Derivative ◽  
Fractional Order ◽  
Fractional Derivatives ◽  
Grey Scale ◽  
Colour Image ◽  
Colour Image Processing ◽  
Image Processing Algorithms ◽  
Processing Algorithms

Many image processing algorithms make use of derivatives. In such cases, fractional derivatives allow an extra degree of freedom, which can be used to obtain better results in applications such as edge detection. Published literature concentrates on grey-scale images; in this paper, algorithms of six fractional detectors for colour images are implemented, and their performance is illustrated. The algorithms are: Canny, Sobel, Roberts, Laplacian of Gaussian, CRONE, and fractional derivative.

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