scholarly journals Geometrical coding of color images

2018 ◽  
Vol 103 (117) ◽  
pp. 159-173
Author(s):  
Gleb Nosovskiy

Formal analysis and computer recognition of 2D color images is important branch of modern computer geometry. However, existing algorithms, although they are highly developed, are not quite satisfactory and seem to be much worse than (unknown) algorithms, which our brain uses to analyze eye information. Almost all existing algorithms omit colors and deal with grayscale transformations only. But in many cases color information is important. In this paper fundamentally new method of coding and analyzing color digital images is suggested. The main point of this method is that a full-color digital image is represented, without dropping colors, by special 2D surface in 3D space, after which it is analyzed by methods of differential geometry, rather than traditional gradient-based or Hessian-based methods (like in SIFT, GLOH, SURF, Canny operator, and many other algorithms).

2010 ◽  
Author(s):  
Stephen M. Stahl ◽  
Laurence Mignon ◽  
Nancy Muntner

All of the titles in the Stahl's Illustrated series are designed to be fun. Concepts are illustrated by full-color images that will be familiar to all readers of Stahl's Essential Psychopharmacology, 3rd Edition and The Prescriber's Guide. The texts in this user-friendly series can be supplements to figures, images and tables. The visual learner will find that these books make psychopharmacology concepts easy to master, while the non-visual learner will enjoy a shortened text version of complex psychopharmacology concepts. Within each book, each chapter builds on previous chapters, synthesizing information from basic biology and diagnostics to building treatment plans and dealing with complications and comorbidities. Novices may want to approach the Stahl's Illustrated series by first looking through all the graphics and gaining a feel for the visual vocabulary. Readers more familiar with these topics should find that going back and forth between images and text provides an interaction with which to vividly conceptualize complex pharmacologies. And, to help guide the reader toward more in-depth learning about particular concepts, each book ends with a Suggested Reading section.


2009 ◽  
Author(s):  
Stephen M. Stahl ◽  
Nancy Muntner

All of the titles in the Stahl's Illustrated series are designed to be fun. Concepts are illustrated by full-color images that will be familiar to all readers of Stahl's Essential Psychopharmacology, 3rd Edition and The Prescriber's Guide. The visual learner will find that these books make psychopharmacology concepts easy to master, while the non-visual learner will enjoy a shortened text version of complex psychopharmacology concepts. Within each book, each chapter builds on previous chapters, synthesizing information from basic biology and diagnostics to building treatment plans and dealing with complications and comorbidities. Novices may want to approach Stahl's Illustrated series by first looking through all the graphics and gaining a feel for the visual vocabulary. Readers more familiar with these topics should find that going back and forth between images and text provides an interaction with which to vividly conceptualize complex pharmacologies. And, to help guide the reader toward more in-depth learning about particular concepts, each book ends with a Suggested Reading section.


2014 ◽  
Vol 511-512 ◽  
pp. 550-553 ◽  
Author(s):  
Jian Yong Liang

Edge detection is an old and hot topic in image processing, pattern recognition and computer vision. Numerous edge detection approaches have been proposed to gray images. It is difficult to extend these approaches to color image edge detection. A novel edge detection method based on mathematical morphology for color images is proposed in this paper. The proposed approach firstly compute vector gradient based on morphological gradient operators, and then compute the optimal gradient according to structure elements with different size. Finally, we use a threshold to binary the gradient images and then obtain the edge images. Experimental results show that the proposed approach has advantages of suppressing noise and preserving edge details and it is not sensitive to noise pixel. The finally edge images via the proposed method have high PSNR and NC compared with the traditional approaches.


2021 ◽  
pp. 361-371
Author(s):  
Nikolay Petrovich Midukov ◽  
Viktor Sergeyevich Kurov

The article is devoted to the prediction of mechanical properties on the study of the microstructure of the cross section of cardboard. The results of the work in the future can be used as an addition to standard methods for evaluating the mechanical properties of cardboard. On the basis of images of the microstructure of the cross sections of the two-layer test liner cardboard and their graphic processing using modern computer programs, the lengths of fiber contacts were determined. Guided by the fact that the most significant indicator of all geometric parameters of the microstructure is the length of fiber contacts, the main mechanical properties of cardboard were determined (bursting strength and compression resistance, breaking length, bending stiffness, interlayer strength)produced according to various technologies (conventional method of preparing recovered paper stock, dry defibration of recovered paper with aerodynamic formation of the top layer, dry defibration of recovered paper with subsequent supply of fibers to the stock and dry defibration of recovered paper with subsequent grinding in the stock). Each of the technologies allows to obtain cardboard with different mechanical parameters. It has been established that almost all mechanical indicators depend directly proportionally on the length of the fiber contact lines. The obtained dependencies can be used to predict the mechanical properties of cardboard in its production at industry enterprises.


Author(s):  
John C. Russ ◽  
Thomas M. Hare

Modelling of three-dimensional structures, either for purposes of geometrical measurement (eg. volume, surface area) or as an aid to visualization, has traditionally been carried out by a variety of different methods. Biologists, who are usually able to conveniently cut sections through their specimens, often make use of serial sections for this purpose. The most common interpretation of serial section photos has been by printing micrographs on transparent material, aligning them, and stacking them up. Occasionally, physical models of lucite, wood, clay or styrofoam have been constructed using the prints as templates, and with the advent of modern computer equipment, some digitization of the sections and their subsequent viewing or plotting with any viewpoint and orientation has enabled researchers to better see the structures represented. There has even been limited use of stereoscopy, that is, producing plots or on-screen color images of the feature outlines from two different viewpoints which can be visually merged to produce the illusion of relief.


2016 ◽  
Author(s):  

New 3rd edition! This bestselling quick reference provides practice-focused guidance on the recognition and treatment of more than 100 pediatric and adolescent skin conditions. Includes more than 300 full color images plus 79 new images! New 3rd edition includes: 13 new chapters Acrodermatitis Enteropathica Aplasia Cutis Congenita Dermoid Cysts Epidermal Nevi Erythema Nodosum Henoch-Schonlein Purpura Juvenile Plantar Dermatosis Kwashiorkor Langerhans Cell Histiocytosis Pigmentary Mosaicism - Hyperpigmented Pigmentary Mosaicism - Hypopigmented Pityriasis Lichenoides Polymorphous Light Eruption New section on nutritional dermatoses 79 new color images aid in accurate visual diagnosis Must-have information on each condition is presented in the precise sequence in which you need it in the clinical setting: 1. Etiology/epidemiology 2. Symptoms and signs 3. How to make the diagnosis 4. Treatment 5. Prognosis 6. Referral considerations 7. Resources for families


2005 ◽  
Vol 03 (supp01) ◽  
pp. 123-132
Author(s):  
L. C. KWEK ◽  
K. W. CHOO ◽  
JIANGFENG DU ◽  
ARTUR K. EKERT ◽  
CAROLINA MOURA ALVES ◽  
...  

Almost all computational tasks in the modern computer can be designed from basic building blocks. These building blocks provide a powerful and efficient language for describing algorithms. In quantum computers, the basic building blocks are the quantum gates. In this tutorial, we will look at quantum gates that act on one and two qubits and briefly discuss how these gates can be used in quantum networks.


1995 ◽  
Vol 57 (7) ◽  
pp. 925-961 ◽  
Author(s):  
Karl Verfaillie ◽  
Luc Boutsen

2006 ◽  
Author(s):  
Kunihiro Sato ◽  
Atsuhiko Sugita ◽  
Masakazu Morimoto ◽  
Kensaku Fujii

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