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20 October 2026
Reseach Article

Active Optical Source Modulation and Filtering for Coherent Detection of Light Scatter

by B. Michael Kanack
International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
Volume 187 - Number 142
Year of Publication: 2026
Authors: B. Michael Kanack
10.5120/ijca3ce5eaf68a6c

B. Michael Kanack . Active Optical Source Modulation and Filtering for Coherent Detection of Light Scatter. International Journal of Computer Applications. 187, 142 ( Sep 2026), 45-48. DOI=10.5120/ijca3ce5eaf68a6c

@article{ 10.5120/ijca3ce5eaf68a6c,
author = { B. Michael Kanack },
title = { Active Optical Source Modulation and Filtering for Coherent Detection of Light Scatter },
journal = { International Journal of Computer Applications },
issue_date = { Sep 2026 },
volume = { 187 },
number = { 142 },
month = { Sep },
year = { 2026 },
issn = { 0975-8887 },
pages = { 45-48 },
numpages = {9},
url = { https://ijcaonline.org/archives/volume187/number142/active-optical-source-modulation-and-filtering-for-coherent-detection-of-light-scatter/ },
doi = { 10.5120/ijca3ce5eaf68a6c },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Journal Article
%1 2026-09-19T02:57:29.517836+05:30
%A B. Michael Kanack
%T Active Optical Source Modulation and Filtering for Coherent Detection of Light Scatter
%J International Journal of Computer Applications
%@ 0975-8887
%V 187
%N 142
%P 45-48
%D 2026
%I Foundation of Computer Science (FCS), NY, USA
Abstract

Since Stanley Kubrick's, epic 1968 science fiction film, "2001: A Space Odyssey", computer comprehension of visual human speech directly to words has been imagined. There have been hundreds of publications and book chapters devoted to this topic, including multiple review articles. Examples are Gaikwad et al. [1] and Battista et al. [2]. Most papers depend on Artificial Intelligence based upon Hidden Markov Models and other camera techniques capturing and analyzing visual motion in time of video frames. Some notable exceptions are direct monitoring of the laryngeal, Jorgensen [3] and embedding magnets, Gilbert et al. [4]. In this paper, a novel technique is used to improve the capture of these motions and process the utterance of an entire word into a Composite Ensemble Phonemes Viseme (CEPV). Described is the improvement in the optical sampling technique. This is accomplished both with an active optical source and a high speed camera. Subsequent digital signal processing allows for compression of time domain scattering of light of an utterance into a unique image or matrix of numbers, representing a word which can be compared to other images within a list to interpret meaning.

References
  1. S.K. Gaikwad, B.W. Gawali, Pravin Yannawar, "A Review on Speech Recognition Technique", International Jour. of Computer Applications, Vol. 10 - No. 3, November 2010, pp16-24.
  2. M. Battista, F. Collesei, E. Orzan, M. Fantoni and D. Bottari, "Lip-Reading: Advances and Unresolved Questions in a Key Communication Skill, Adiol. Res., July 21, 2025.
  3. C. C. Jorgensen and D. D. Lee, Ames Research Center, NASA Tech Brief, May 1, 2009, pp. 37-38.
  4. Gilbert JM, Rybchenko SI, Hofe R, Ell SR, Fagan MJ, Moore RK, Green P. Isolated word recognition of silent speech using magnetic implants and sensors. Med Eng Phys. 2010 Dec; 32(10):1189-97.
  5. Y. Assael, B. Shillingford, S. Whiteson and N. de Fretias, "LipNet: End-to-End Sentence-Level Lipreading", arXiv:1611.01599, 2016.
  6. E. Patterson, S. Gurbuz, Z. Tufekci, and J. Gowdy, “CUAVE: a new audio-visual database for multimodal human computer- interface research”, Proceedings of IEEE. International conference on Acoustics, speech and Signal Processing, 2017-2020, 2002
  7. A. Bizzoccchi, "How Many Phonemes Does the English Language Have?", Int. Jour. on Studies in English Lang. and Lit., Vol. 5, Issue 10, October 2017, pp. 36-46.
  8. B. Kanack, "Measurement of Intermodulation Distortion in Optical Diodes", 1995 IEEE MTT-S Digest, pp. 61-64.
Index Terms

Computer Science
Information Sciences

Keywords

Lip Reading Discrete Fourier Transform Laser Illumination Covert Communications Urban Security/Warfare