Method of measuring geometric variables of a structure contained in an image

An image processing device for measuring geometric variables of a three-dimensional structure contained in an object from at least one image representing the object, having a non-transitory storage device for storing the image, a deformable first model describing the structure, the shape of which model can be described by parameters, and a deformable second model describing the structure, which second model in shape corresponds m the first model, and which in addition contains at least one geometric variable, and having an image processing device for processing the image according to the following steps

• deformation of the first model until the first model conforms to an entirety of the structure in the image,
• determination of modified parameters at which the first model exhibits optimum conformity with the structure,
• modification of the parameters of the second model in a same manner as that of the parameters of the first model, a result of such modification being modified parameters at which the second model also exhibits optimum conformity with the structure, and
• derivation of a resultant modified geometric variable(s) after the modification of the parameters of the second model.

A non-transitory computer-readable medium with a computer program embodied thereon, for an image processing device for measuring geometric variables of a three-dimensional structure contained in an object from at least one image representing the object, comprising the following steps:

• use of a deformable first model describing the structure, the shape of which model can be described by parameters,
• deformation of the first model until the first model conforms to an entirety of the structure in the image,
• determination of modified parameters at which the first model exhibits optimum conformity with the structure,
• use of a deformable second model describing the structure, which second model in shape corresponds to the first model, and which in addition to the parameters also contains at least one geometric variable,
• modification of the parameters of the second model in a same manner as that of the parameters of the first model, a result of such modification being modified parameters at which the second model also exhibits optimum conformity with the structure, and derivation of a resultant modified geometric variable(s) after the modification of the parameters of the second model.