Modulation transfer function determination of video capture cards by speckle patterns
- Antonio M. Pozo
- José J. Castro
- Manuel Rubiño
- Ángel F. Doval (ed. lit.)
- Cristina Trillo (ed. lit.)
- Juan Carlos López Vázquez (ed. lit.)
Editorial: SPIE, The International Society for Optics and Photonics,
ISBN: 9780819490902
Año de publicación: 2012
Tipo: Capítulo de Libro
Resumen
Today, video cameras connected to frame grabbers or video capture cards (VCCs) are used in many applications such as traffic control, surveillance, medical systems or machine vision. In this work, we present a method for determining the spatial-frequency response of VCCs. This method is based on the modulation transfer function (MTF) determination from speckle patterns using a low-cost experimental setup. We have evaluated and compared three different VCCs. The three VCCs produce an amplification (boost) in the horizontal MTF in a different spatial-frequency range, also differing in the maximum amplification value