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Using the effect of longitudinal chromatic aberration for measuring distances from a single color photograph

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A method for measuring the distance to photographic objects based on the longitudinal chromatic aberration at which the focal length of the lens and, consequently, the degree of defocusing of the photograph depend on the color range used during shooting is proposed. By performing the local analysis of the spatial Fourier spectrum of the image, which is differently defocused in different spectral ranges, distances are calculated in analytical form. A theoretical justification of the proposed method is provided, and the results of its practical application for measuring distances to objects of the scene with the help of its color photograph taken using an objective with pronounced chromatic aberration are presented.

© 2019 Optical Society of America

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