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    Sensor for distance estimation using FFT of images

    TitleSensor for distance estimation using FFT of images
    Publication TypeJournal Article
    Año de publicación2009
    AutoresLazaro, JL, Cano, A, Fernández, PR, Luna, CA
    Idioma de publicaciónEnglish
    JournalSensors
    Volumen9
    Número12
    Páginas10434-10446
    Fecha de publicación12/2009
    Rank in category11/56
    JCR CategoryInstruments & Instrumentation
    JCR Impact Factor1.870
    ISSN1424-8220
    URLhttp://www.mdpi.com/1424-8220/9/12/10434/
    DOI10.3390/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%.

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