Single image matting, the task of estimating accurate foreground opacity from a given image, is a severely ill-posed and challenging problem. Inspired by recent advances in image co-segmentation, in this paper, we present a novel framework for a new task called co-matting, which aims to simultaneously extract alpha mattes in multiple images that contain slightly-deformed instances of the same f...

The distribution behavior of trace metals between copper matte and spinel-saturated iron silicate slags was investigated at 1250 °C pSO2 0.25 atm low silica concentrations. experiments were conducted in magnetite (Fe3O4) spinel crucibles controlled CO-CO2-SO2-Ar gas mixtures using a high-temperature equilibration-quenching technique. concentrations elements matte, spinel, slag quantified by ele...

Ignacio Matte Blanco had an important role in organizing the teaching of Psychiatry in medical school. In this paper we describe his training, that began as a physiologist, but turned into psychiatric and psychoanalysis in his formation in the United States and the United Kingdom during the forties. After returning to Chile, in the Chair of Psychiatry at the Faculty of Medicine of the Universid...

A series of experiments were conducted to assess how the reflectance properties and the complexity of surface "mesostructure" (small-scale 3-D relief) influence perceived lightness. Experiment 1 evaluated the role of surface relief and gloss on perceived lightness. For surfaces with visible mesostructure, lightness constancy was better for targets embedded in glossy than matte surfaces. The res...

We present a thorough photometric and geometric study of the multimedia devices composed of both a matte screen and an attached camera, where it is shown that the light emitted by an image displayed on the monitor can be expressed in closed-form at any point facing the screen, and that the geometric calibration of the camera attached to the screen can be simplified by introducing simple geometr...

Detection of highlights is a prominent issue in computer vision, graphics and image processing. Applications which require object properties measurement or rendering are affected by specular reflection since the models assume matte diffusing surfaces most of the time. Hence, detection, and sometimes removal, of specular reflection (highlights) in an image may be critical. Several methods are pr...

Video matting attempts to extract foreground images from an image sequence, as well as the alpha-mattes that describe their transparency. This papers presents an automated video matting framework using motion-based segmentation and bayesian matting. We build upon existing techniques for layer segmentation based on optical flow to generate a coarse trimap, by identifying image pixels as belongin...