Optics Letters · 2000 · 28 citations · 2 references
Numerical AnalysisEngineeringWave FrontInterferometryRobust Wave-front EstimationRonchi TestingCoherent Gradient SensingComputational ImagingComputational ElectromagneticsPhysicsSynthetic Aperture RadarInverse ProblemsNonlinear Signal ProcessingSignal ProcessingPhase RetrievalArray ProcessingQuadratic Cost FunctionalBiomedical ImagingHigh-frequency ApproximationOptical System AnalysisWaveform Analysis
A quadratic cost functional for computing an estimate of a wave front from multiple directional derivatives is presented. This functional is robust to noise and is specially suited for moiré deflectometry, Ronchi testing, and lateral shearing interferometry.
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