Open AccessHybrid imaging systems for depth of focus extension with or without post-processing
Author(s) -
Frédéric Diaz,
François Goudail,
Brigitte Loiseaux,
JeanPierre Huignard
Publication year - 2010
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/206/1/012009
Subject(s) - extension (predicate logic) , focus (optics) , computer science , depth of focus (tectonics) , artificial intelligence , computer vision , geology , optics , physics , programming language , seismology , subduction , tectonics
International audienceWe address two different methods to enhance the depth of focus (DOF) according to the application, using amplitude and/or phase masks. The first application consists in increasing the length of the focal line of a lens while preserving its transverse resolution. We propose a mask inspired from holographic principles. We then address DOF enhancement with an hybrid imaging system composed of a pupil mask followed by a digital deconvolution step. We use an optimization criterion based on the final image quality to determine the optimal parameters of phase masks