1. Acquisition process of a geometrical form defined by a deformable material, wherein the geometrical form is deformed by the deformations of the deformable material, wherein the process comprises the steps consisting of: placing, in different positions of the geometrical form, a set of sensors ( 1 ), wherein a sensor is provided to supply representative signals of the orientation of the geometrical form to its position, selecting a model of the form, based on the signals supplied by the sensors, determining the parameters of the model, measuring the distances which separate the sensors from one another, based on the parameters of the model and the measurements of the distance which separate the sensors from one another, determining a spatial distribution of the points of the geometrical form, wherein the process is characterised in that it further comprises the following steps: the sensors ( 1 ) are fixed to a support (M) made from a solid elastic material which matches all or part of the geometrical form to be acquired and that is capable of following the deformations of the material which defines the geometrical form, wherein the support is equipped with at least one element in the form of a zigzag (Z 1 , Z 2 ) woven in the solid elastic material which matches the geometrical form to be acquired, wherein the sensors ( 1 ) are placed on successive segments (s) of the zigzag element (Z 1 , Z 2 ).