background: to evaluate the efficacy of color doppler ultrasound (cdus) in differentiating benign and malignant cervical lymph nodes by detecting differences in blood flow patterns. materials and methods: in this cross‑sectional prospective study, 25 untreated patients with clinical evidence of cervical lymphadenopathy were evaluated. cdus was performed for 80 cervical lymph nodes. the gray sca...

We present a color liquid-crystal-on-silicon microdisplay that integrates color filters on silicon for colors. Fabrication parameters, color purity and light stability of this breed of microdisplays were characterized. A single-panel WXGA color projector based on this color filter microdisplay technology was demonstrated.

BACKGROUND/AIM Color matching in prosthodontic therapy is a very important task because it influences the esthetic value of dental restorations. Visual shade matching represents the most frequently applied method in clinical practice. Instrumental measurements provide objective and quantified data in color assessment of natural teeth and restorations. In instrumental shade analysis, the goal is...

This report addresses the problem of calibrating camera parameters such as lens distortion and color scaling using variational methods. We have presented multi-view stereo techniques based on variational ideas to (i) evolve pose parameters of a 3D model object to take advantage of the known shape of calibration objects, and to reduce computational complexity, (ii) evolve distortion parameters o...

A new color correction method is introduced which predicts how changing the color of the scene illuminant will affect a camera’s RGB response. Like diagonal transformation color correction methods. the new method requires only 3-parameters. It therefore requires only the RGB color of the two illuminants be known. The method models the 9-parameters of a 3-by-3 linear transformation using a 3dime...