Method and system for teledentistry images

Patent metadata

Field	Value
Publication number	US-11449992-B2
Application number	US-201916980081-A
Country	US
Kind code	B2
Filing date	Mar 25, 2019
Priority date	Apr 2, 2018
Publication date	Sep 20, 2022
Grant date	Sep 20, 2022

Abstract

A method (300) for obtaining one or more oral images (90) using an imaging device or system (100, 200) includes: (i) obtaining (320), using an imager, an oral image; (ii) extracting (330), by a controller, one or more features from the oral image, wherein the extracted one or more features comprises at least an image quality feature and an object recognition feature; (iii) determining (340), by a decision module of the controller, whether the one or more extracted features satisfy a predetermined feature threshold; (iv) providing (350) feedback to a user regarding the obtained oral image if the one or more extracted features does not satisfy the predetermined feature threshold, or authorizing (370) transmission of the oral image to a dental professional if the one or more extracted features satisfy the predetermined feature threshold; and (v) transmitting (380), if transmission is authorized, the obtained oral image to a dental professional.

First claim

What is claimed is:

1. A method for obtaining one or more oral images using an imaging device or system, the method comprising:
obtaining, using an image sensor of the imaging device or system, an oral image;
extracting, by a controller of the imaging device or system, one or more features from the obtained oral image, wherein the extracted one or more features comprises at least an image quality feature and an object recognition feature, wherein the object recognition feature comprises an outcome of output filtering using a template, and/or characterization of a presence or absence of an oral feature using a trained detector;
determining, by a decision module, whether the one or more extracted features satisfy a predetermined feature threshold;
providing, via a user interface of the imaging device or system, feedback to a user regarding the obtained oral image if the one or more extracted features does not satisfy the predetermined feature threshold, or authorizing transmission of the obtained oral image to a dental professional if the one or more extracted features satisfy the predetermined feature threshold; and
transmitting, if transmission is authorized, the obtained oral image to a dental professional.

2. The method of claim 1 , wherein the step of providing feedback to a user comprises providing instructions to the user for obtaining an image having features that satisfy the predetermined feature threshold.

3. The method of claim 1 , wherein the imaging device or system is configured to direct the user to obtain a new oral image if the one or more extracted features does not satisfy the predetermined feature threshold.

4. The method of claim 1 , wherein one or more image parameters are controlled or determined by image properties at one or more points within the obtained oral image.

5. The method of claim 1 , wherein the image quality feature comprises blur quantification, specular highlight quantification, and/or dynamic range detection.

6. The method of claim 1 , wherein the decision module is configured to analyze the one or more extracted features using one or more of a color detection algorithm, a Canny edge detection algorithm, a Deriche edge detection algorithm, a Sobel operator or filter, a Harris corner detection algorithm, a Gaussian filter, a Hessian matrix, and a local binary pattern algorithm.

7. The method of claim 1 , wherein the imaging device or system is a smartphone and the image sensor is a smartphone camera.

8. An imaging device configured to obtain one or more high-quality oral images ( 90 ), comprising:
an image sensor configured to obtain one or more images;
a user interface configured to provide feedback to a user of the imaging device;
a communications module configured to transmit one or more oral images; and
a controller configured to: (i) extract one or more features from the obtained oral image, wherein the extracted one or more features comprises at least an image quality feature and an object recognition feature, wherein the image quality feature comprises blur quantification, specular highlight quantification, and/or dynamic range detection; (ii) determine, by a decision module, whether the one or more extracted features satisfy a predetermined feature threshold; (iii) provide, via the user interface of the imaging device or system, feedback to a user regarding the obtained oral image if the one or more extracted features does not satisfy the predetermined feature threshold, or authorize transmission of the obtained oral image to a dental professional if the one or more extracted features satisfy the predetermined feature threshold; and (iv) direct the communications module to transmit, if transmission is authorized, the obtained oral image to a dental professional.

9. The imaging device of claim 8 , wherein the object recognition feature comprises the outcome of output filtering using a template, and/or characterization of a presence or absence of an oral feature using a trained detector.

10. The imaging device of claim 8 , wherein the imaging device or system is a smartphone and the image sensor is a smartphone camera.

11. An imaging system configured to obtain one or more high-quality oral images, comprising:
an imaging device comprising an image sensor configured to obtain one or more oral images, and a communications module configured to transmit one or more oral images; and
a processing device comprising: a communications module configured to receive one or more oral images from the imaging device; and a controller configured to: (i) extract one or more features from the received oral image, wherein the extracted one or more features comprises at least an image quality feature and an object recognition feature, wherein the object recognition feature comprises the outcome of output filtering using a template, and/or characterization of a presence or absence of an oral feature using a trained detector; (ii) determine, by a decision module, whether the one or more extracted features satisfy a predetermined feature threshold; (iii) provide, via a user interface, feedback to a user regarding the obtained oral image if the one or more extracted features does not satisfy the predetermined feature threshold, or authorize transmission of the obtained oral image to a dental professional if the one or more extracted features satisfy the predetermined feature threshold; and (iv) direct the communications module to transmit, if transmission is authorized, the obtained oral image to a dental professional.

12. The imaging system of claim 11 , wherein the image quality feature comprises blur quantification, specular highlight quantification, and/or dynamic range detection.

Assignees

• Koninklijke Philips Nv

Inventors

• Jeanne Vincent
• Bevis Taylor

Classifications

• G06V10/945

  User interactive design; Environments; Toolboxes · CPC title

• G06V10/44

  Local feature extraction by analysis of parts of the pattern, e.g. by detecting edges, contours, loops, corners, strokes or intersections; Connectivity analysis, e.g. of connected components · CPC title

• G06V10/993

  Evaluation of the quality of the acquired pattern · CPC title

• A61B1/00039

  provided with input arrangements for the user · CPC title

• A61B1/044

  for absorption imaging · CPC title