US 12,678,117 B2 · Three-dimensional scanner and scanning method using same

Abstract

The present invention relates to a three-dimensional intraoral scanner and an intraoral scanning method using same, the scanner being capable of reducing a matching error generated during a three-dimensional model data generation process for all the teeth in an oral cavity, and the three-dimensional intraoral scanner and the intraoral scanning method using same, according to one embodiment of the present invention, generate three-dimensional model data for all the teeth in an oral cavity by using a large-area scan image, thereby enabling the minimization of cumulative errors generated when the three-dimensional scan data is matched, and match, with the three-dimensional model data, three-dimensional scan data generated by using a narrow-area two-dimensional scan image, thereby enabling improved precision of the three-dimensional model data.

Claims12

Dependent claims

A 3D intraoral scanner comprising:

a case having a front portion having a light outlet and a light inlet;
a light output unit disposed in the case to output a light through the light outlet;
an image sensing unit disposed in the case to receive a light through the light inlet;
and
a processor disposed in the case,
wherein the image sensing unit is configured to:
acquire 2D wide scan images of teeth in an oral cavity in a wide scan mode;
and
acquire 2D narrow scan images of the teeth in a narrow scan mode;
and
wherein the processor is configured to:
generate 3D wide scan data of the teeth using the 2D wide scan images;
generate 3D narrow scan data of the teeth using the 2D narrow scan images;
generate 3D model data for all of the teeth by registering the 3D wide scan data;
and
register the 3D narrow scan data into the 3D model data.

13 more elements

Dependencies are inferred from the claim text.

Three-dimensional scanner and scanning method using same

Life of this patent

Three-dimensional scanner and scanning method using same

Life of this patent

Abstract

Claims12