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- Takashi Totsuka, Marc Levoy
- SIGGRAPH
- 1993

The Fourier projection slice theorem allows projections of volume data to be generated in O n logn time for a vol ume of size n The method operates by extracting and inverse Fourier transforming D slices from a D frequency domain representation of the volume Unfortunately these projections do not exhibit the occlusion that is character istic of conventional… (More)

- Jaswinder Pal Singh, Chris Holt, Takashi Totsuka, Anoop Gupta, John L. Hennessy
- J. Parallel Distrib. Comput.
- 1995

Hierarchical N-body methods, which are based on a fundamental insight into the nature of many physical processes, are increasingly being used to solve large-scale problems in a variety of scientific/engineering domains. Applications that use these methods are challenging to parallelize effectively, however, owing to their nonuniform, dynamically changing… (More)

- Anil N. Hirani, Takashi Totsuka
- SIGGRAPH
- 1996

Scratches on old films must be removed since these are more noticeable on higher definition and digital televisions. Wires that suspend actors or cars must be carefully erased during post production of special effects shots. Both of these are time consuming tasks but can be addressed by the following image restoration process: given the locations of noisy… (More)

Hierarchical N-body methods, which are based on a fundamental insight into the nature of many physical processes, are increasingly being used to solve large-scale problems in a variety of scientific/engineering domains. Applications that use these methods are challenging to parallelize effectively, however, owing to their nonuniform, dynamically changing… (More)

- Tomoo Mitsunaga, Taku Yokoyama, Takashi Totsuka
- SIGGRAPH
- 1995

Key extraction is an inverse problem of finding the foreground, the background, and the alpha from an image and some hints. Although the chromakey solves this for a limited case (single background color), this is often too restrictive in practical situations. When the extraction from arbitrary background is necessary, this is currently done by a time… (More)

This paper describes a new algorithm for image noise removal for a particularly difficult but important type of noise. The noise is in the form of many contiguous pixels. It may be in an area of image which is textured and has prominent edges. Scratches in old films and photographs and wires used in special effects movie scenes are important examples of… (More)

- Anil N. Hirani, Takashi Totsuka
- ICIP
- 1996

This paper describes a new fast, iterative algorithm for interactive image noise removal. Given the locations of noisy pixels and a prototype image, the noisy pixels are to be restored in a natural way. Most existing image noise removal algorithms use either frequency domain information (e.g low pass filtering) or spatial domain information (e.g median… (More)

- Kyoko Nakamura, Mitsuharu Ohki, Takashi Totsuka
- ICIP
- 1998

- Hiroyuki Segawa, Takashi Totsuka
- CVPR
- 1999