نتایج جستجو برای: specular
تعداد نتایج: 3089 فیلتر نتایج به سال:
The rendering software supports direct point lighting and also environment lighting. We approximate environment lighting based on captured lighting environments. We use an image-based environment illumination technique to light the face with a specified environment map. An example is shown in Figure 1.The environment map is prefiltered with several blur kernels, for diffuse integration, glossy ...
We present two extensions to the Space Carving framework. The first is a progressive scheme to better reconstruct surfaces lacking sufficient textures. The second is a novel photo-consistency measure that is valid for both specular and diffuse surfaces, under unknown lighting conditions.
BACKGROUND Central corneal thickness (CCT) can be measured by using contact and non-contact methods. Ultrasound pachymetry (US pachymetry) is a contact method for measuring CCT and is perhaps the most commonly used method. However, non-contact methods like scanning slit topography (Orbscan II), slit-lamp optical coherence tomography (SL-OCT), and specular microscopy are also used. Not many stud...
PURPOSE To investigate the effect and safety of a selective Rho kinase inhibitor, ripasudil 0.4% eye drops, on corneal endothelial cells of healthy subjects. DESIGN Prospective, interventional case series. METHODS In this study, 6 healthy subjects were administered ripasudil 0.4% in the right eye twice daily for 1 week. Morphological changes and corneal endothelial cell density were examine...
Image-based rendering techniques have been used to improve image quality, increase frame rate, and reduce modeling time. However, once the images have been acquired, they are bound to the light conditions of the scene during acquisition time. This paper describes how the Plenoptic Modeling approach can be extended to support applications that allow users to arti cially change the original light...
A new region-based approach to nonrigid motion tracking is described. Shape is defined in terms of a deformable triangular mesh that captures object shape plus a color texture map that captures object appearance. Photometric variations are also modeled. Nonrigid shape registration and motion tracking are achieved by posing the problem as an energy-based, robust minimization procedure. The appro...
The surface-related multiple elimination (SRME) method has proven to be successful on a large number of data cases. Most of the applications are still 2D, as the full 3D implementation is still expensive and under development. However, the earth is a 3D medium, such that 3D effects are difficult to avoid. Most of the 3D effects come from diffractive structures, whereas the specular reflections ...
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