Method for generating a model of a flat object from views of the object

摘要

A method for generating a model of a flat object from views taken by at least two calibrated cameras, which is capable of generating two-dimensional and volumetric representations of the object, where the representations can be a depth map, a volumetric representation or a mesh representation, method including the following basic steps: calibrating at least two cameras, calculating several 3D coordinates of at least three points belonging to the same plane of the flat object, calculating the equation of the plane of the flat object, selecting at least one region representing the surface of the flat object, in at least one view provided by at least one camera, and calculating the intersection between the selected region representing the surface of the object and the equation of the plane.

主权项

1. Method for generating a model of a flat object from views of the flat object, wherein it generates a representation selected from among a depth map of the flat object, a volumetric representation of the flat object and a mesh representation of the flat object, by means of at least the following steps:
i) calibrating at least a first camera and a second camera; ii) calculating the 3D coordinates of at least three points belonging to a plane of the flat object; iii) calculating a equation of the plane comprised in the flat object; iv) selecting at least one region representing the surface of the flat object, in at least one image plane provided by at least one camera; and, v) calculating an intersection between the selected region representing the surface of the object and the equation of the plane, wherein step ii) additionally comprises: selecting a point and a first image point, in which the first image point represents the selected point in the image plane provided by the first camera, and in which said selected point is comprised in the flat object; calculating a first ray joining the center of the first camera with the first image point, and also with the selected point; calculating the projection of the selected point on the image plane provided by the second camera; calculating at least one second ray by means of at least the image plane of the second camera, connecting the center of the second camera with the second image point and also with the selected point; determining the 3D coordinates of the selected point by means of calculating the point of intersection between the first ray and at least one second ray; repeating the previous steps for at least two more points, obtaining at least the 3D coordinates of three points belonging to the plane of the flat object.