Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Marcelo Walter"'
Publikováno v:
IEEE Transactions on Image Processing. 30:6408-6419
View synthesis allows observers to explore static scenes using aligned color images and depth maps captured in a preset camera path. Among the options, depth-image-based rendering (DIBR) approaches have been effective and efficient since only one pai
Publikováno v:
IEEE Signal Processing Letters. 25:1705-1709
Depth-image-based rendering is a popular way to produce content for three-dimensional television and free viewpoint video, allowing the synthesis of numerous viewpoints using a single reference view and its depth map. Due to the synthesis process and
Publikováno v:
Medical image analysis. 35
While improved visual realism is known to enhance training effectiveness in virtual surgery simulators, the advances on realistic rendering for these simulators is slower than similar simulations for man-made scenes. One of the main reasons for this
Autor:
Marcelo Walter, João Luiz Dihl Comba, Guilherme N. Oliveira, Rui M. Bastos, Rafael P. Torchelsen
Publikováno v:
The Visual Computer. 27:917-928
Texture mapping is an important technique for adding visual details to geometric models. Image-based texture mapping is the most popular approach, but it relies on pre-computed images which often limit their use to static effects. For adding dynamic
Autor:
Marcelo Walter, Djalma Bandeira
Publikováno v:
The Visual Computer. 26:965-974
Current techniques for image-based weathering and deweathering operations are not efficient in cases where the images have strong specular effects. Highlights lack chroma information, and therefore special treatment for them is important for correct
Autor:
V. A. Dos Passos, Marcelo Walter
Publikováno v:
The Visual Computer. 24:617-623
Three dimensional mosaics, or surface mosaics, are a beautiful art form where a sculpture is made from putting together tiles on a given shape. Although 2D mosaics have attracted a lot of attention in graphics research, the same is not true for 3D mo
Publikováno v:
ICASSP
One of the biggest challenges in view interpolation is to fill the regions without projective information in the synthesized view. In this paper, we present a new approach that identifies and corrects different types of missing information. In the fi
Publikováno v:
Scopus-Elsevier
Current simulations in virtual surgery use three-dimensional representations of organs without any internal structure. For some applications, however, there is a need to represent also the organs internal anatomical structures, such as blood vessels.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::1395055942cec31289e82b3e4a5a8f1a
http://hdl.handle.net/11025/29346
http://hdl.handle.net/11025/29346
Publikováno v:
Computer Graphics Forum. 25:675-684
We present a wavelet-based approach for selecting patches in patch-based texture synthesis. We randomly select the first block that satisfies a minimum error criterion, computed from the wavelet coefficients (using 1D or 2D wavelets) for the overlapp
Autor:
Leandro Tonietto, Marcelo Walter
Publikováno v:
Computers & Graphics. 29:697-703
Image morphing has been extensively studied in computer graphics and it can be summarized as follows: given two input images, morphing algorithms produce a sequence of inbetween images which transforms the source image into the target image in a visu