Objective measurement of erythema in psoriasis using digital color photography with color calibration

Photography with Color-Coded Apertures

Prism-Based Color Separation for Professional Digital Photography

In the field of silver-halide photography, color separation was explored about a century ago, using filter mosaics, dichroic mirrors, three-shot filtration, and other techniques, before the dominant technology of multi-layered color film emerged. In the field of digital photography, the same techniques are being explored now in conjuction with silicon sensor technology. The three-shot technique...

Objective Spectrometric Measurement of Keloid Color in the East Asian Population: Pitfalls of Subjective Color Measurements.

BACKGROUND Keloids are characterized by the formation of excessive scar tissue that extends beyond the area of the initial wound. Keloid redness is due to angiogenesis and chronic inflammation and is an important indicator of the severity of the lesion and the effectiveness of treatment. METHODS The color of 33 untreated keloids from 30 patients was measured with a narrow-band reflectance col...

Color Calibration of Scanners Using Polynomial Transformation

Digital imaging is a rapid growing area with the developments in computer technology. Digital color use has become a conventional tool in many disciplines, such as cartography remote sensing and photogrammetry. The need for better color quality enforces digital imaging industry to produce devices with less color distortions. Despite the today’s advanced level of technology, it is known that inp...

Screening neonatal jaundice based on the sclera color of the eye using digital photography.

A new screening technique for neonatal jaundice is proposed exploiting the yellow discoloration in the sclera. It involves taking digital photographs of newborn infants' eyes (n = 110) and processing the pixel colour values of the sclera to predict the total serum bilirubin (TSB) levels. This technique has linear and rank correlation coefficients of 0.75 and 0.72 (both p<0.01) with the measured...