We present a novel robust methodology for corresponding a dense set of points on an object surface from photometric values, for 3-D stereo computation of depth. We use two stereo pairs of images, each pair taken of exactly the same scene but under different illumination. By respectively dividing the left images and the right images of these pairs, a stereo pair of photometric ratio images is pr...

We consider the problem of determining whether two images come from different objects or the same object in the same pose, but under different illumination conditions. We show that this problem cannot be solved using hard constraints: even using a Lambertian rejectance model, there is always an object and a pair of lighting conditions consistent with any two images. Nevertheless, we show that f...

We show that illumination by continuous white radiation saturates the population of levels so that some of the transitions are not observed. This reduces the number of observable transitions so that the resolution of neighboring transitions is improved. In the case of ν = 11/2 the improved resolution leads to clear observation of zero in the ρxx which appears as a finite resistivity minimum in ...

Illumination differences between disjoint cameras can have a dramatic effect on the appearance of objects, thus increasing the difficulty of multi-camera object association. Although methods to model these inter-camera illumination conditions exist, they often rely on static illumination conditions and are unable to copewith unpredictable illumination changes over time. In this paper we propose...

Illumination for mixed reality consists of simulating the illumination of 3D scenes composed with real and virtual 3D objects. Current research into illumination methods for mixed reality focuses on im­ proving the quality of the simulated illumination, while assuming that the required input data, the scene geometry and radiance, can be accurately acquired. This thesis provides methods that red...

— To achieve seamless integration of the real scene with virtual objects, we need to obtain accurate illumination condition of the real scene. Using HDRI (High Dynamic Range Image) we can acquire and control real world illumination information. There are various intensity levels of light sources in a HDRI; some regions are very bright and others are not. Bright regions contain much more lightin...

The potential equation provides a natural mathematical basis for all the illumination computation methods based on the strategy of shooting light. The particle tracing technique which p h ysically simulates the particle model of light, can also be considered as a general, random walk based solution to the potential equation. As the complexity of the environment increases, the straight forward p...

Interactive rendering is usually made with very simple illumination models. High quality rendering is too slow to be interactive. In this paper, we extend the notion of light vector by computing it in 5D and we try to obtain an interactive high quality rendering with global illumination by merging the notion of light vector with the render cache approach.

For virtual studio TV production, multi-site video conference applications using a virtual meeting room and for synthetic/natural hybrid coding according to the forthcoming ISO/MPEG-4 standard, a synthetic and a natural scene are mixed to generate a synthetic/natural hybrid image sequence. For realism, the illumination in both scenes should be identical. In this paper, the illumination of the n...