Efficient discrimination of active lighting in machine vision

Jouko Viitanen

doi:10.1117/12.444183

Efficient discrimination of active lighting in machine vision

Jouko Viitanen

VTT Technical Research Centre of Finland

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

Abstract

A new optical arrangement is introduced for such applications of machine vision that need to discriminate structured laser lighting from stray ambient lighting. Instead of using transmissive filters that usually have high attenuation, a double reflective filter arrangement is presented. A combination of dielectric and metallic mirrors achieves steep stopband attenuation especially in the near infrared region where Si detectors are sensitive and common blackbody-like radiators have high spectral density. An additional advantage follows from the compact size of such a Maksutov-type mirror telescope. Compared to a corresponding refractive design, the length is reduced to less than half.

Original language	English
Title of host publication	Intelligent Robots and Computer Vision XX
Subtitle of host publication	Algorithms, Techniques, and Active Vision
Editors	David P. Casasent, Ernest L. Hall
Publisher	International Society for Optics and Photonics SPIE
Pages	193-198
ISBN (Print)	978-0-8194-4300-7
DOIs	https://doi.org/10.1117/12.444183
Publication status	Published - 2001
MoE publication type	A4 Article in a conference publication
Event	Intelligent Robots and Computer Vision XX: Algorithms, Techniques, and Active Vision - Boston, MA, United States Duration: 29 Oct 2001 → 31 Oct 2001

Conference

Conference	Intelligent Robots and Computer Vision XX: Algorithms, Techniques, and Active Vision
Country/Territory	United States
City	Boston, MA
Period	29/10/01 → 31/10/01

Keywords

optical
telescope
lens
lasers
bandpass filtering
computer vision

Access to Document

10.1117/12.444183

Cite this

@inproceedings{7170df2d6fd44f85828e3fb4bafc5df0,

title = "Efficient discrimination of active lighting in machine vision",

abstract = "A new optical arrangement is introduced for such applications of machine vision that need to discriminate structured laser lighting from stray ambient lighting. Instead of using transmissive filters that usually have high attenuation, a double reflective filter arrangement is presented. A combination of dielectric and metallic mirrors achieves steep stopband attenuation especially in the near infrared region where Si detectors are sensitive and common blackbody-like radiators have high spectral density. An additional advantage follows from the compact size of such a Maksutov-type mirror telescope. Compared to a corresponding refractive design, the length is reduced to less than half.",

keywords = "optical, telescope, lens, lasers, bandpass filtering, computer vision",

author = "Jouko Viitanen",

note = "Project code: A0SU00058; Intelligent Robots and Computer Vision XX: Algorithms, Techniques, and Active Vision ; Conference date: 29-10-2001 Through 31-10-2001",

year = "2001",

doi = "10.1117/12.444183",

language = "English",

isbn = "978-0-8194-4300-7",

pages = "193--198",

editor = "Casasent, {David P.} and Hall, {Ernest L.}",

booktitle = "Intelligent Robots and Computer Vision XX",

publisher = "International Society for Optics and Photonics SPIE",

address = "United States",

}

Viitanen, J 2001, Efficient discrimination of active lighting in machine vision. in DP Casasent & EL Hall (eds), Intelligent Robots and Computer Vision XX: Algorithms, Techniques, and Active Vision. International Society for Optics and Photonics SPIE, pp. 193-198, Intelligent Robots and Computer Vision XX: Algorithms, Techniques, and Active Vision, Boston, MA, United States, 29/10/01. https://doi.org/10.1117/12.444183

Efficient discrimination of active lighting in machine vision. / Viitanen, Jouko.
Intelligent Robots and Computer Vision XX: Algorithms, Techniques, and Active Vision. ed. / David P. Casasent; Ernest L. Hall. International Society for Optics and Photonics SPIE, 2001. p. 193-198.

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

TY - GEN

T1 - Efficient discrimination of active lighting in machine vision

AU - Viitanen, Jouko

N1 - Project code: A0SU00058

PY - 2001

Y1 - 2001

N2 - A new optical arrangement is introduced for such applications of machine vision that need to discriminate structured laser lighting from stray ambient lighting. Instead of using transmissive filters that usually have high attenuation, a double reflective filter arrangement is presented. A combination of dielectric and metallic mirrors achieves steep stopband attenuation especially in the near infrared region where Si detectors are sensitive and common blackbody-like radiators have high spectral density. An additional advantage follows from the compact size of such a Maksutov-type mirror telescope. Compared to a corresponding refractive design, the length is reduced to less than half.

AB - A new optical arrangement is introduced for such applications of machine vision that need to discriminate structured laser lighting from stray ambient lighting. Instead of using transmissive filters that usually have high attenuation, a double reflective filter arrangement is presented. A combination of dielectric and metallic mirrors achieves steep stopband attenuation especially in the near infrared region where Si detectors are sensitive and common blackbody-like radiators have high spectral density. An additional advantage follows from the compact size of such a Maksutov-type mirror telescope. Compared to a corresponding refractive design, the length is reduced to less than half.

KW - optical

KW - telescope

KW - lens

KW - lasers

KW - bandpass filtering

KW - computer vision

U2 - 10.1117/12.444183

DO - 10.1117/12.444183

M3 - Conference article in proceedings

SN - 978-0-8194-4300-7

SP - 193

EP - 198

BT - Intelligent Robots and Computer Vision XX

A2 - Casasent, David P.

A2 - Hall, Ernest L.

PB - International Society for Optics and Photonics SPIE

T2 - Intelligent Robots and Computer Vision XX: Algorithms, Techniques, and Active Vision

Y2 - 29 October 2001 through 31 October 2001

ER -

Efficient discrimination of active lighting in machine vision

Abstract

Conference

Keywords

Access to Document

Fingerprint

Cite this