The invention relates to a method for measuring three-dimensional objects by a single view backbit shadowgraphy using optical laws of light propagation. In order to measure an object (32), for example a hollow sphere translucent or transparent with respect to visible light with the aid of Snell-Descartes law related to the light propagation through an object, the inventive method consists in determining an equation relating the object opto-geometrical parameters with the result of observation carried out directly on the object image, wherein said image is obtainable by observing said object using a single view backlit shadowgraphy, in acquiring said image, in carrying out an observation and in determining at least one geometrical or optical parameter of the object with the aid of the equation and the observation result.
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