Alan Kalvin - Academia.edu (original) (raw)

Papers by Alan Kalvin

Research paper thumbnail of Designing Robust Perceptual Colormaps for Internet Visualization

Research paper thumbnail of An overview of computer-integrated surgery at the IBM Thomas J. Watson Research Center

Ibm Journal of Research and Development, Jan 1, 1996

Research paper thumbnail of Visualization in Anthropology: Reconstruction of Human Fossils

Visualization in Anthropology: Reconstruction of Human Fossils from Multiple Pieces Alan D. Kalvi... more Visualization in Anthropology: Reconstruction of Human Fossils from Multiple Pieces Alan D. Kalvin* David Dean* Jean-Jacques Hublin* Marc Braun* ^Robotics and Augmentation Group, IBM TJ Watson Research Center, PO Box 704 Yorktown Heights, NY 10598, USA ' ...

Research paper thumbnail of Invited Paper: Which Trajectories Through Which Perceptually Uniform Color Spaces Produce Appropriate Colors Scales for Interval Data?(Gamut Mapping I)(Report …

映像情報メディア学会技術 …, Jan 1, 2000

抄録 This paper is concerned with the development of perceptual colormaps for visualization. Colorm... more 抄録 This paper is concerned with the development of perceptual colormaps for visualization. Colormaps, are typically designed using algorithmic techniques and do not explicitly take into account the way in which the human visual system processes its ...

Research paper thumbnail of Fast perceptual method for evaluating color scales for Internet visualization

Proceedings of SPIE, Jan 1, 2001

ABSTRACT We have developed a fast perceptual method for evaluating color scales for data visualiz... more ABSTRACT We have developed a fast perceptual method for evaluating color scales for data visualization that uses a monochrome photographic image of a human face as a test pattern. We conducted an experiment in which we applied various color scales to a photographic image of a face and asked observers to rate the naturalness of each image. We found a very strong correlation between the perceived naturalness of the images and the luminance monotonicity of the color scales. Since color scales with monotonic luminance profiles are widely recommended and used for visualizing continuous scalar data, we conclude that using a human face as a test patten provides a quick, simple method for evaluating such color scale in Internet environments.

Research paper thumbnail of Solving Jigsaw Puzzles Using Computer Vision

Research paper thumbnail of Graduated profiling: enumerating and generating perceptual colormaps for uncalibrated computer displays

Proceedings of SPIE, Jan 1, 2002

ABSTRACT The importance of using perceptual colormaps for visualizing numerical data is well esta... more ABSTRACT The importance of using perceptual colormaps for visualizing numerical data is well established in the fields of scientific visualization, computer graphics and color science and related areas of research. In practice however, the use of perceptual colormaps tends to be the exception rather than the rule. In general it is difficult for end-users to find suitable colormaps. In addition, even when such colormaps are available, the inherent variability in color reproduction among computer displays makes it very difficult for the users to verify that these colormaps do indeed preserve their perceptual characteristics when used on different displays. Generally, verification requires display profiling (evaluating the display's color reproduction characteristics), using a colorimeter or a similar type of measuring device. With the growth of the Internet, and the resulting proliferation of remote, client-based displays, the profiling problem has become even more difficult, and in many cases, impossible. We present a method for enumerating and generating perceptual colormaps in such a way that ensures that the perceptual characteristics of the colormaps are maintained for over a wide range of different displays. This method constructs colormaps that are guaranteed to be 'perceptually correct' for a given display by using whatever partial profile information of the display is available. We use the term 'graduated profiling' to describe this method of partial profiling.

Research paper thumbnail of Faster, higher quality volume visualization for 3D medical imaging

Proceedings of SPIE, Jan 1, 2008

Research paper thumbnail of 3D visualization of the scoliotic spine: longitudinal studies, data acquisition, and radiation dosage constraints

Proceedings of SPIE, Jan 1, 1999

ABSTRACT

Research paper thumbnail of Exploiting 2-D to 3-D Intra-operative Image Registration for Qualitative Evaluations and Post-operative Simulations

… Image Computing and …, Jan 1, 1999

Research paper thumbnail of Pyramid segmentation in 2-D and 3-D images using local optimization

Pattern Recognition, 1988., 9th …, Jan 1, 1988

Research paper thumbnail of Using scout images to reduce metal artifacts in CT with application to revision total hip surgery

Proceedings of SPIE, Jan 1, 1997

ABSTRACT X-ray CT images of objects containing metal are often corrupted by 'blooming&amp... more ABSTRACT X-ray CT images of objects containing metal are often corrupted by 'blooming' and streaking artifacts that radiate from the regions of the image where the metal is present. The best strategy for reducing these artifacts is to modify the noisy projection data before reconstructing the image. Unfortunately this approach does not lead to a very practical solution, since it assumes that one has access to the unencoded projection data. In reality, these data are virtually impossible to get, even for isolated research studies, let alone for routine clinical use. Our goal is to produce a practical, clinically useful system of reducing metal artifacts in real patient CT scans on a regular basis. So we need a method that is not dependent on sinogram data. However, it is extremely difficult, if not impossible, to reduce metal artifacts using just the information than exists in the noisy CT image itself. As we show, crucial image details may be completely erased by the artifacts. Therefore we have developed a new approach for suppressing these reconstruction artifacts by using scout images. We have applied this method successfully to real CT data.

Research paper thumbnail of On two problems reducible to topological sorting

The Computer Journal, Jan 1, 1984

... 1 17 Caledon Road, Emmarentia Ext, Johannesburg, South Africa, 2 Department of Computer Scien... more ... 1 17 Caledon Road, Emmarentia Ext, Johannesburg, South Africa, 2 Department of Computer Science, Southern Illinois University, Carbondale, USA. Abstract. Generating permutations satisfying a UD sequence, or having a ...

Research paper thumbnail of Which trajectories through which perceptually uniform color spaces produce appropriate color scales for interval data

IS&T Seventh Color Imaging …, Jan 1, 1999

Research paper thumbnail of Computer-aided reconstruction of a pre-Inca temple ceiling in Peru

… . Computer Applications in …, Jan 1, 1997

Research paper thumbnail of Computer aided planning and execution of craniofacial surgical procedures

… in Medicine and …, Jan 1, 1992

Research paper thumbnail of Building perceptual color maps for visualizing interval data

Proceedings of SPIE, Jan 1, 2000

... Alan D. Kalvin, Bernice E. Rogowitz, Adar Pelah, Aron Cohen. ... allowed us to test the hypot... more ... Alan D. Kalvin, Bernice E. Rogowitz, Adar Pelah, Aron Cohen. ... allowed us to test the hypothesis that the luminance channel best carries high-spatial frequency information while the saturation channel best represents low spatial-frequency information (Mullen 1985; DeValois and ...

Research paper thumbnail of Three-dimensional multiresolution segmentation algorithm for surface reconstruction from computerized tomography (CT) data

Society of Photo-Optical Instrumentation …, Jan 1, 1989

Research paper thumbnail of Using visualization in the archaeological excavations of a pre-Inca temple in Peru

Proceedings of the 7th …, Jan 1, 1996

... Visualization of consonance and correlation between chords serves as a useful tool to overloo... more ... Visualization of consonance and correlation between chords serves as a useful tool to overlook harmonic relationships. ... [3] CL Krummhansl, EJ Kessler: (1982), '“Bating the dynamic changes in perceived tonal organization in a spatial representation of musical keys” J. Exp. ...

Research paper thumbnail of Visualization in anthropology: reconstruction of human fossils from multiple pieces

… , 1992. Visualization'92, …, Jan 1, 1992

Visualization in Anthropology: Reconstruction of Human Fossils from Multiple Pieces Alan D. Kalvi... more Visualization in Anthropology: Reconstruction of Human Fossils from Multiple Pieces Alan D. Kalvin* David Dean* Jean-Jacques Hublin* Marc Braun* ^Robotics and Augmentation Group, IBM TJ Watson Research Center, PO Box 704 Yorktown Heights, NY 10598, USA ' ...

Research paper thumbnail of Designing Robust Perceptual Colormaps for Internet Visualization

Research paper thumbnail of An overview of computer-integrated surgery at the IBM Thomas J. Watson Research Center

Ibm Journal of Research and Development, Jan 1, 1996

Research paper thumbnail of Visualization in Anthropology: Reconstruction of Human Fossils

Visualization in Anthropology: Reconstruction of Human Fossils from Multiple Pieces Alan D. Kalvi... more Visualization in Anthropology: Reconstruction of Human Fossils from Multiple Pieces Alan D. Kalvin* David Dean* Jean-Jacques Hublin* Marc Braun* ^Robotics and Augmentation Group, IBM TJ Watson Research Center, PO Box 704 Yorktown Heights, NY 10598, USA ' ...

Research paper thumbnail of Invited Paper: Which Trajectories Through Which Perceptually Uniform Color Spaces Produce Appropriate Colors Scales for Interval Data?(Gamut Mapping I)(Report …

映像情報メディア学会技術 …, Jan 1, 2000

抄録 This paper is concerned with the development of perceptual colormaps for visualization. Colorm... more 抄録 This paper is concerned with the development of perceptual colormaps for visualization. Colormaps, are typically designed using algorithmic techniques and do not explicitly take into account the way in which the human visual system processes its ...

Research paper thumbnail of Fast perceptual method for evaluating color scales for Internet visualization

Proceedings of SPIE, Jan 1, 2001

ABSTRACT We have developed a fast perceptual method for evaluating color scales for data visualiz... more ABSTRACT We have developed a fast perceptual method for evaluating color scales for data visualization that uses a monochrome photographic image of a human face as a test pattern. We conducted an experiment in which we applied various color scales to a photographic image of a face and asked observers to rate the naturalness of each image. We found a very strong correlation between the perceived naturalness of the images and the luminance monotonicity of the color scales. Since color scales with monotonic luminance profiles are widely recommended and used for visualizing continuous scalar data, we conclude that using a human face as a test patten provides a quick, simple method for evaluating such color scale in Internet environments.

Research paper thumbnail of Solving Jigsaw Puzzles Using Computer Vision

Research paper thumbnail of Graduated profiling: enumerating and generating perceptual colormaps for uncalibrated computer displays

Proceedings of SPIE, Jan 1, 2002

ABSTRACT The importance of using perceptual colormaps for visualizing numerical data is well esta... more ABSTRACT The importance of using perceptual colormaps for visualizing numerical data is well established in the fields of scientific visualization, computer graphics and color science and related areas of research. In practice however, the use of perceptual colormaps tends to be the exception rather than the rule. In general it is difficult for end-users to find suitable colormaps. In addition, even when such colormaps are available, the inherent variability in color reproduction among computer displays makes it very difficult for the users to verify that these colormaps do indeed preserve their perceptual characteristics when used on different displays. Generally, verification requires display profiling (evaluating the display's color reproduction characteristics), using a colorimeter or a similar type of measuring device. With the growth of the Internet, and the resulting proliferation of remote, client-based displays, the profiling problem has become even more difficult, and in many cases, impossible. We present a method for enumerating and generating perceptual colormaps in such a way that ensures that the perceptual characteristics of the colormaps are maintained for over a wide range of different displays. This method constructs colormaps that are guaranteed to be 'perceptually correct' for a given display by using whatever partial profile information of the display is available. We use the term 'graduated profiling' to describe this method of partial profiling.

Research paper thumbnail of Faster, higher quality volume visualization for 3D medical imaging

Proceedings of SPIE, Jan 1, 2008

Research paper thumbnail of 3D visualization of the scoliotic spine: longitudinal studies, data acquisition, and radiation dosage constraints

Proceedings of SPIE, Jan 1, 1999

ABSTRACT

Research paper thumbnail of Exploiting 2-D to 3-D Intra-operative Image Registration for Qualitative Evaluations and Post-operative Simulations

… Image Computing and …, Jan 1, 1999

Research paper thumbnail of Pyramid segmentation in 2-D and 3-D images using local optimization

Pattern Recognition, 1988., 9th …, Jan 1, 1988

Research paper thumbnail of Using scout images to reduce metal artifacts in CT with application to revision total hip surgery

Proceedings of SPIE, Jan 1, 1997

ABSTRACT X-ray CT images of objects containing metal are often corrupted by 'blooming&amp... more ABSTRACT X-ray CT images of objects containing metal are often corrupted by 'blooming' and streaking artifacts that radiate from the regions of the image where the metal is present. The best strategy for reducing these artifacts is to modify the noisy projection data before reconstructing the image. Unfortunately this approach does not lead to a very practical solution, since it assumes that one has access to the unencoded projection data. In reality, these data are virtually impossible to get, even for isolated research studies, let alone for routine clinical use. Our goal is to produce a practical, clinically useful system of reducing metal artifacts in real patient CT scans on a regular basis. So we need a method that is not dependent on sinogram data. However, it is extremely difficult, if not impossible, to reduce metal artifacts using just the information than exists in the noisy CT image itself. As we show, crucial image details may be completely erased by the artifacts. Therefore we have developed a new approach for suppressing these reconstruction artifacts by using scout images. We have applied this method successfully to real CT data.

Research paper thumbnail of On two problems reducible to topological sorting

The Computer Journal, Jan 1, 1984

... 1 17 Caledon Road, Emmarentia Ext, Johannesburg, South Africa, 2 Department of Computer Scien... more ... 1 17 Caledon Road, Emmarentia Ext, Johannesburg, South Africa, 2 Department of Computer Science, Southern Illinois University, Carbondale, USA. Abstract. Generating permutations satisfying a UD sequence, or having a ...

Research paper thumbnail of Which trajectories through which perceptually uniform color spaces produce appropriate color scales for interval data

IS&T Seventh Color Imaging …, Jan 1, 1999

Research paper thumbnail of Computer-aided reconstruction of a pre-Inca temple ceiling in Peru

… . Computer Applications in …, Jan 1, 1997

Research paper thumbnail of Computer aided planning and execution of craniofacial surgical procedures

… in Medicine and …, Jan 1, 1992

Research paper thumbnail of Building perceptual color maps for visualizing interval data

Proceedings of SPIE, Jan 1, 2000

... Alan D. Kalvin, Bernice E. Rogowitz, Adar Pelah, Aron Cohen. ... allowed us to test the hypot... more ... Alan D. Kalvin, Bernice E. Rogowitz, Adar Pelah, Aron Cohen. ... allowed us to test the hypothesis that the luminance channel best carries high-spatial frequency information while the saturation channel best represents low spatial-frequency information (Mullen 1985; DeValois and ...

Research paper thumbnail of Three-dimensional multiresolution segmentation algorithm for surface reconstruction from computerized tomography (CT) data

Society of Photo-Optical Instrumentation …, Jan 1, 1989

Research paper thumbnail of Using visualization in the archaeological excavations of a pre-Inca temple in Peru

Proceedings of the 7th …, Jan 1, 1996

... Visualization of consonance and correlation between chords serves as a useful tool to overloo... more ... Visualization of consonance and correlation between chords serves as a useful tool to overlook harmonic relationships. ... [3] CL Krummhansl, EJ Kessler: (1982), '“Bating the dynamic changes in perceived tonal organization in a spatial representation of musical keys” J. Exp. ...

Research paper thumbnail of Visualization in anthropology: reconstruction of human fossils from multiple pieces

… , 1992. Visualization'92, …, Jan 1, 1992

Visualization in Anthropology: Reconstruction of Human Fossils from Multiple Pieces Alan D. Kalvi... more Visualization in Anthropology: Reconstruction of Human Fossils from Multiple Pieces Alan D. Kalvin* David Dean* Jean-Jacques Hublin* Marc Braun* ^Robotics and Augmentation Group, IBM TJ Watson Research Center, PO Box 704 Yorktown Heights, NY 10598, USA ' ...