Algorithm Design for Real-Time Rendering of the Natural Waters
This work describes an implementation of optical phenomena
on water surfaces. Despite high performance of current graphics hardware,
shaders need essential simplifications and numerical
approximation. Here we propose the implementation of common
effects such as reflection, refraction and caustics. In order to have
a simple and elegant implementation we have done coarse approximations
to achieve real time animation, while still having a
realistic appearance, which is important in real time simulation
and games.
| downloads: | text | video1 | video2 | video3 | video4 |
Material Appearance Transfer Between Images
This work is devoted to the transport of
the material appearance between objects depicted in different
images. There are some assumptions about the scene depicted
in this images. Objects are lit by a white directional
light source, while the diffuse color of the object is not white.
There also must be a specular highlight depicted in the image.
To estimate the geometry of the objects an shape from
shading algorithm is required. Estimation of surface normals
and the light direction is needed to acquire a reflectance of the
object.
| downloads: | text |
Measurement, Rendering and Editing of the Material Appearance
Humans recognize objects visually on the basis of material composition as well as shape. In
reality, appearance is controlled by the complex interplay of light (electromagnetic radiation
coming from various sources) and the materials composing the objects in the scene, with
complex scattering effects taking place all along the path of light. In computer graphics
there are two fundamental visual attributes used to describe the appearance of objects in
synthetic images. These attributes are color and gloss.
In this work we are attempting to overview fundamental knowledge of material appearance in the field of computer graphics. We start with discussion of some aspects of the human
perception of the light and outline some physical properties of the light-material interactions.
Then we discuss fundamentals of the color perception and the colorimetry. We also overview
common models of how materials scatter light. Then we introduce some system devoted to
material appearance measurement.
In our research we are focusing on acquirement and analysis of the data related to the
material appearance. These data explain how the material reflects the light and can be used
to render synthetic images. We are also focusing on editing and transporting of the material
appearance of objects depicted in single images.
| downloads: | text |