Publications by Mark Lucente

A Response to "Some Thoughts on the State of the Technical Science in 2012"

Proceedings of the IEEE, 1998 Oct.

This is an invited predictive paper, written in part as a response to a predictive paper published in 1962 and in part as a prediction of technology and life in 2048.

Visualization Space: A Testbed for Deviceless Multimodal User Interface

Computer Graphics (A publication of ACM SIGGRAPH) Volume 31, Number 2, May 1997.

The design and applications of the VisualizationSpace (also known as "DreamSpace") is described. DreamSpace is a deviceless smart-room that combines speech recognition, machine-vision tracking and other sensing to allow natural multimodal interaction between humans and computing systems, with applications to visualization, networked homes, education and e-commerce.

Publications on Electro-Holography

Interactive three-dimensional holographic displays: seeing the future in depth

Computer Graphics (A publication of ACM SIGGRAPH) Volume 31, Number 2, May 1997.

Overview of electro-holography.

Computational holographic bandwidth compression

IBM Systems Journal, 1996 Oct.

Hogel-vector holographic bandwidth compression is a novel technique to compute holographic fringe patterns for real-time display. This diffraction-specific approach, treats a fringe as discretized in space and spatial frequency. By undersampling fringe spectra, hogel-vector encoding achieves a compression ratio of 16:1 with an acceptably small loss in image resolution. Hogel-vector bandwidth compression attains interactive rates of holographic computation for real-time three-dimensional electro-holographic (holovideo) displays. Total computation time for typical 3D images is reduced by a factor of over 70 to 4.0 s per 36-MB holographic fringe and under 1.0 s for a 6-MB full-color image. Analysis focuses on the trade-offs among compression ratio, image fidelity, and image depth. Hogel-vector bandwidth compression matches information content to the human visual system, achieving "visual-bandwidth holography."

Holographic bandwidth compression using spatial subsampling

Optical Engineering, 1996 June.

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A novel electro-holographic bandwidth compression technique, fringelet bandwidth compression, is described and implemented. This technique uses spatial subsampling to reduce the bandwidth and complexity of holographic fringe computation for real-time 3-D holographic displays. As part of the diffraction-specific fringe computation approach, the fringe pattern is treated as a spectrum that is sampled in space (as "hogels") and in spatial frequency (as "hogel vectors"). Fringelet bandwidth compression achieves a compression ratio of 16:1 without conspicuously degrading image quality. Fringelet decoding is extremely simple, enabling an overall increase in fringe computation speed of over 3000 times compared to conventional interference-based methods. This speed has enabled the generation of images at nearly interactive rates: under 4.0 s per hand-sized (one-liter) 3-D image generated from a 36-Mbyte fringe.

Rendering Interactive Holographic Images

Proc. of SIGGRAPH 95 (LA, CA, Aug. 6-11, 1995). In Computer Graphics Proceedings, ACM SIGGRAPH, pp. 387-394. with Tinsley A. Galyean.

We present a method for computing holographic fringe patterns for the generation of three-dimensional (3-D) holographic images at interactive speeds. We used this method to render holograms on a conventional computer graphics workstation. The framebuffer system supplied signals directly to a real-time holographic (holovideo) display.

A hardware architecture for rapid generation of electro-holographic fringe patterns

Proceedings of SPIE #2406 Practical Holography IX, 2406-23, (SPIE, Bellingham, WA, 1995). with J. A. Watlington, C. J. Sparrell, V. M. Bove, I. Tamitani.

Hogel-Vector decoding is performed on a stream-processor superpostion daughter card on the Cheops P2 processor module. Two of these "Splotch Engines" can decode a 1-MB hogel-vector array into 36-MB of fringes in 3 seconds.

Diffraction-specific Fringe Computation for Electro-Holography

Doctoral Thesis Dissertation, MIT Dept. of Electrical Engineering and Computer Science, Sept. 1994.

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A new, fast, versatile method of holographic fringe computation is described, implemented, and analyzed. Two methods of holographic encoding - "Hogel-Vector Encoding" and "Fringelet Encoding" - are developed on top of diffraction-specific computation. Holographic encoding provides bandwidth compression of 16 times, and increases computation speed by a factor of over 100. See related publications: IBM Systems Journal 1996 and Opt. Eng. 1996.

Interactive Computation of Holograms Using a Look-up Table

Journal of Electronic Imaging, vol. 2, #1, Jan 1993 , pp. 28-34.

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Several methods of increasing the speed and simplicity of the computation of off-axis transmission holograms are presented, with applications to the real-time display of holographic images.

Electronic Holography: The Newest

International Symposium on 3-D Imaging and Holography, Osaka, Japan, Nov. 1994.

New Approaches To Holographic Video

Proceedings of Holographics International '92, SPIE Proceedings #1732, paper #1732-48, (SPIE, July 1992). [Incomplete figures.]

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(with St. Hilaire, Benton, et al.) Progress in holographic video display research: increasing speed, interactivity, full color, larger size.

Optimization of Hologram Computation for Real-Time Display

Proceedings of SPIE #1667 Practical Holography VI, 1667-04, (SPIE, Bellingham, WA, 1992), pp. 32-43.

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Earliest work on bipolar intensity, use of elemental fringes in a precomputed table. First-ever interactive display of 3-D holographic images.

Color Images with the MIT Holographic Video Display

Proceedings of SPIE #1667 Practical Holography VI, 1667-73, (SPIE, Bellingham, WA, 1992), pp. 73-84. (St. Hilaire, Benton, et al.)

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First full-color display.

Electronic display system for computational holography

Proceedings of SPIE #1212 Practical Holography IV, 1212-20, (SPIE, Bellingham, WA, 1990), pp. 174-182. (St. Hilaire, Benton, et al.)

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Earliest successful AOM-based real-time holographic display.

Other Publications by Mark Lucente

Coherent Optical Communication with Injection-Locked High-Power Semiconductor Laser Array

Electronics Letters, vol. 25 (17), p. 1112, 17 Aug. 1989. with E.S. Kintzer, S.B. Alexander, J.G. Fujimoto, V.W.S. Chan.

Heterodyne FSK communication at 110 Mbit/s was demonstrated with an injection-locked high-power 2-stripe semicomductor laser array. A high-power (over 300 mW) coherent optical transmitter was constructed without penalty in bit error rate performance.

Nonlinear Mixing and Phase conjugation in Broad-Area Diode Lasers

Applied Physics Letters, vol. 53 (6), p. 467, 8 Aug. 1988. with G.M. Carter, J.G. Fujimoto.

Spatial and Frequency Dependence of Four-Wave Mixing in a Braod-Area Diode Laser

Applied Physics Letters, vol. 53 (20), p. 1897, 14 Nov. 1988. with J.G. Fujimoto, G.M. Carter.

In both papers, four-wave mixing in the active region of a broad-area GaAl diode laser was used to determine the ambipolar diffusion constant, the third-order nonlinearity coefficient and the excited carrier lifetime.