dentistry has always benefited from photography as an adjunct tool in diagnosis treatment planning and presentations. the main reason for taking dental photographs is to provide documents and supplements for treatment. a photograph facilitates communication between dentists and laboratories. quality control will become more important to dental practice in near future and photographs can be used...

Given distinct planes π and π′ in extended Euclidean space E3, and a point O on neither plane, the associated one-point projection with center O maps π bijectively onto π′. That’s a simple fact, but from the standpoint of real-world one-point projections such as perspective drawing or photography, this map, called a perspectivity, is actually a bit strange. To see why, we first review three typ...

This paper describes an Augmented Reality (AR) system for the treatment of acrophobia. First, the technical characteristics of the first prototype are described. Second, the capacity of the immersive photography used in the AR system to provoke sense of presence in users is tested. Forty-one participants without fear of heights, walked around a staircase in both a real environment and an immers...

The proficiency of nonophthalmologists with direct ophthalmoscopy is poor, which has prompted a search for alternative technologies to examine the ocular fundus. Although ocular fundus photography has existed for decades, its use has been traditionally restricted to ophthalmology clinical care settings and textbooks. Recent research has shown a role for nonmydriatic fundus photography in nonoph...

This illustrated paper explores the capacity of the manipulated photograph to represent scenes of mythology and the supernatural. Can a photograph, which is said to be an index of the real, render a mythical realm into a believable scene? Practices such a double exposures and combination printing have historically been used to create famous faked images of the supernatural, such as the Cottingl...

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AIMS To evaluate the sensitivity and specificity of wide-field scanning laser ophthalmoscopy (WSLO) in the detection of referable diabetic eye disease, and to compare its performance with digital retinal photography. METHODS Patients enrolled into the study underwent non-mydriatic WSLO imaging, then single- and dual-field mydriatic digital retinal photography, and examination with slit lamp b...

We are just a few years away from celebrating the 200 anniversary of photography. The first permanent photographic record was made by Niépce in 1826, the view from his window at Le Gras. After many development cycles, including some periods of stagnation, photography is now experiencing an amazing period of growth. The changes that started in the mid 90’s and going into the next several years w...