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Lázaro JL, Cano AE, Fernández PR, et al. Sensor for Distance Estimation Using FFT of Images. Sensors (Basel). 2009;9(12):10434-46doi: 10.3390/s91210434.
Lázaro, J. L., Cano, A. E., Fernández, P. R., & Luna, C. A. (2009). Sensor for Distance Estimation Using FFT of Images. Sensors (Basel, Switzerland), 9(12), 10434-46. https://doi.org/10.3390/s91210434
Lázaro, José L, et al. "Sensor for Distance Estimation Using FFT of Images." Sensors (Basel, Switzerland) vol. 9,12 (2009): 10434-46. doi: https://doi.org/10.3390/s91210434
Lázaro JL, Cano AE, Fernández PR, Luna CA. Sensor for Distance Estimation Using FFT of Images. Sensors (Basel). 2009;9(12):10434-46. doi: 10.3390/s91210434. Epub 2009 Dec 22. PMID: 22303183; PMCID: PMC3267231.
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Sensors (Basel). 2009;9(12):10434-46. doi: 10.3390/s91210434. Epub 2009 Dec 22.

Sensor for Distance Estimation Using FFT of Images.

Sensors (Basel, Switzerland)

José L Lázaro, Angel E Cano, Pedro R Fernández, Carlos A Luna

Affiliations

  1. Electronics Department, University of Alcalá, Superior Polytechnic School, University Campus, Alcalá de Henares (28871), Madrid, Spain; E-Mail: [email protected] (A.E.C.)Telecommunication Department, University of Oriente, Av. de las Américas, SN, Santiago de Cuba (90900), Cuba; E-Mails: [email protected] (P.R.F.); [email protected] (C.A.L.).

PMID: 22303183 PMCID: PMC3267231 DOI: 10.3390/s91210434

Abstract

In this paper, the problem of how to estimate the distance between an infrared emitter diode (IRED) and a camera from pixel grey-level intensities is examined from a practical standpoint. Magnitudes that affect grey level intensity were defined and related to the zero frequency component from the FFT image. A general model was also described and tested for distance estimation over the range from 420 to 800 cm using a differential methodology. Method accuracy is over 3%.

Keywords: Fast Fourier Transform; artificial vision; differential method; distance estimation; infrared; zero-frequency component

References

  1. Spectrochim Acta A Mol Biomol Spectrosc. 2007 May;67(1):66-75 - PubMed
  2. Talanta. 2006 Jun 15;69(4):822-8 - PubMed

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