El Helou, MajedShahpaski, MarjanSüsstrunk, Sabine2019-03-232019-03-232019-03-23201910.1364/MATH.2019.MM1D.2https://infoscience.epfl.ch/handle/20.500.14299/155701Depth-from-defocus techniques suffer an ambiguity problem where depth planes on opposite sides of the focal plane have identical defocus. We solve the ambiguity by relying on the wavelength-dependent relationship between defocus and depth. We conduct a robustness analysis and validation on consumer lenses.text::conference output::conference proceedings::conference paper