Search results for "photography"
showing 10 items of 292 documents
Residents'corner December 2013. PhotogRaphic Clues: Choosing the best camera for dermatologic photography.
2013
ejd.2013.2262 Auteur(s) : Alejandro Martin-Gorgojo1 alejandromartingorgojo@aedv.es, Leo Barco2 1 Dermatology Department, Clinical University Hospital, University of Valencia, Av Blasco Ibanez 17, 46010 Valencia, Spain 2 Dermatology Department, Clinica Mediterraneo, Av Nueva musa s/n, 04007 Almeria, Spain Digital photography is constantly progressing and an increasing number of options are available in the market. The present manuscript will briefly try to point out the most important features in [...]
Digital selection of composite resin shade using cross polarized photography and a standardized white balance gray reference card
2021
Purpose The aim of the present case report was to describe, through a clinical case, a step-by-step technique, for the digital selection of composite resin shades using cross polarization and white balance employing a standardized reference card. Case Description After intraoral impression, a digital diagnostic wax up was developed. A 3D printed cast was used to fabricate a lingual polyvinyl siloxane matrix. First a cross-polarized image of the contralateral central incisor was taken in RAW format, using a gray reference card. The digital image was manipulated using this card as a reference, to obtain reliable color values. The obtained color values, from the contralateral central incisor, …
Development of a fast panoramic face mosaicking and recognition system
2005
We present some development results on a system that per- forms mosaicking of panoramic faces. Our objective is to study the fea- sibility of panoramic face construction in real time. To do so, we built a simple acquisition system composed of five standard cameras, which together can take simultaneously five views of a face at different angles. Then, we chose an easily hardware-achievable algorithm, consisting of successive linear transformations, in order to compose a panoramic face from these five views. The method has been tested on a large number of faces. In order to validate our system, we also conducted a preliminary study on panoramic face recognition, based on the principal-compone…
Robustly correlated key‐medical image for DNA‐chaos based encryption
2021
Abstract Medical images include confidential and sensitive information about patients. Hence, ensuring the security of these images is a crucial requirement. This paper proposes an efficient and secure medical image encryption‐decryption scheme based on deoxyribonucleic acid (DNA), one‐dimensional chaotic maps (tent and logistic maps), and hash functions (SHA‐256 and MD5). The first part of the proposed scheme is the key generation based on the hash functions of the image and its metadata. The key then is highly related and intensely sensitive to the original image. The second part is the rotation and permutation of the first two MSB bit‐plans of the medical image to reduce its black backgr…
Editorial for Special Issue “Fine Art Pattern Extraction and Recognition”
2021
Cultural heritage, especially the fine arts, plays an invaluable role in the cultural, historical, and economic growth of our societies [...]
Monográfico. Cine: Arte e industria. [DOI:10.37785/nw.v4n2.a6]
2020
En 1895, en plena segunda revolución industrial, el cine emprendió su andadura con la patente del “cine- matógrafo” de los hermanos Lumière, un ingenio que, gracias a un procedimiento mecánico, permitía no solo la captación de imágenes “reales” –como lo hiciera en su momento la fotografía, pero esta vez añadiéndoles movimiento– sino también la proyección de esa continuidad de imágenes impresionadas. No cabe la menor duda de que con el objeto nació una industria, item est, una actividad lucrativa que explotaba la novedosa invención técnica con el fin de producir bienes comerciables que ofertar a la ociosa sociedad burguesa de finales del s. XIX y principios del s. XX. Rápid…
Cu2+ Coordination Properties of a 2-Pyridine Heptaamine Tripod: Characterization and Binding Mechanism
2009
The synthesis, protonation, and Cu(2+) coordination chemistry of a tripodal heptaamine ligand (L(1)) functionalized with 2-pyridine fragments at the ends of its three branches are reported. L(1) presents six relatively high protonation constants followed by much more reduced constant that as indicated by the UV-vis and NMR data, occur on the pyridine fragments. p[H]-metric, ESI/MS(+), EPR and UV-vis data show that L(1) is able to form mono-, di-, and trinuclear Cu(2+) complexes. Slippage movements and molecular reorganizations have been observed to occur as a function of p[H] in the 1:1 Cu(2+) complexes. The kinetic studies showed that the complex formation is fast and proceeds through a di…
Pomelie e melanzane
2022
Il saggio descrive il progetto fotografico di Sandro Scalia, riletto anche attraverso una raccolta di immagini, affiancato da un apparato di didascalie e una scheda biografica, che hanno come soggetto la città e i suoi patrimoni. In Ascolto il tuo cuore, città, Alberto Savinio adopera un «lungo e tranquillo conversare», che è anche un «passeggiare» per le strade della sua Milano, in un movimento lento che sembra accordarsi all’incedere del passo e della narrazione. Pagina dopo pagina le parole, le frasi, i capitoli si vanno componendo, e con loro si vanno costruendo le immagini di quella «città tutta pietra in apparenza e dura», quanto «morbida di giardini “interni”» (Savinio, 1984). Nel ra…
This is not a manipulation : authentic bodies in digital image
2014
Tämä kaksiosainen tutkimus rakentaa ensimmäisessä osassa teoreettista välineistöä digitaalisen valokuvan ja autenttisen ruumiin käsittelemiseen yhdistämällä Michell Foucaultin ja Judith Butlerin ajatuksia. Toisessa osassa tätä välineistöä sovelletaan Intelligent Life lehden kansikuvaa käsittelevään tapaustutkimukseen, jossa kansikuvan alleviivattua digitaalista muokkaamattomutta käsitellään performatiivisen autenttisuuden näkökulmasta. Autenttisen määrittelemisen ja käytön kontrolli on tutkimuksen keskeinen teema. Foucault ja Butler yhdistyvät näkemykseksi, jonka mukaan autenttinen rakentuu teoista jotka performoivat autenttista. Autenttisen ja epäautenttisen välisen rajan hämärtäminen digi…
A Dataset of Annotated Omnidirectional Videos for Distancing Applications
2021
Omnidirectional (or 360°) cameras are acquisition devices that, in the next few years, could have a big impact on video surveillance applications, research, and industry, as they can record a spherical view of a whole environment from every perspective. This paper presents two new contributions to the research community: the CVIP360 dataset, an annotated dataset of 360° videos for distancing applications, and a new method to estimate the distances of objects in a scene from a single 360° image. The CVIP360 dataset includes 16 videos acquired outdoors and indoors, annotated by adding information about the pedestrians in the scene (bounding boxes) and the distances to the camera of some point…