Method and system for the digital acquisition of intraoral structure and color correction based on distance between reference template value and scanned value
AssigneeIvoclar Vivadent AG
InventorsJosef Schweiger, Jan-Frederik Güth
Life of this patent
Estimating the term…
Abstract
The invention relates to a method for the digital acquisition of an intraoral structure by scanning the structure using an intraoral color scanner which, according to the invention, is designed to correct color values of the scanning points using a color reference template of a reference color space.
Claims14
A method for digitally detecting an intraoral structure by scanning the structure with an intraoral scanner, the scanned values of which contain location information data representing the spatial position of the scanning points and color information data representing color values of the scanning points,
- wherein at least one color reference template having a reference color field corresponding to a reference color value of a reference color space is arranged in the scanning area of the structure, and
- wherein the scanned color information data is corrected according to the distance between the reference color value and a scanned color value of the reference color field.
A method for digitally detecting an intraoral structure by scanning the structure with an intraoral scanner, the scanned values of which contain location information data representing the spatial position of the scanning points and color information data representing color values of the scanning points,
- wherein at least one color reference template having a reference color field corresponding to a reference color value of a reference color space is arranged in the scanning area of the structure,
- wherein the scanned color information data is corrected according to the distance between the reference color value and a scanned color value of the reference color field,
- wherein at least one scanned color value of the color reference field is selected from the set of scanned color values of the scanning points by a software-implemented algorithm, and
- wherein Euclidean distances between the scanned color values of the scanning points and the reference color value of the reference color field are calculated by the algorithm and the distance relevant for the correction is determined on the basis of a subset of the calculated distances which satisfy a minimum condition.
Dependencies are inferred from the claim text.