Photography and thermography combining method of obtaining a fitting parameter to fit an ophthalmic lens into a spectacle frame
AssigneeEssilor International
InventorsStéphane Perrot, Shuang Ding
Life of this patent
Estimating the term…
Abstract
A photography and thermography combining method of obtaining, for a chosen spectacle frame model of a spectacle wearer, at least one fitting parameter to fit an ophthalmic lens into the spectacle frame model. The method includes taking a photograph of the wearer's face with spectacles having the chosen spectacle frame model, taking a thermogram of the wearer's face with the spectacles, identifying the spectacles' contour in the thermogram, overlaying the identified contour or a boxing shape derived from the identified contour onto the photograph, thus obtaining a composite image, and obtaining the at least one fitting parameter from the composite image.
Claims15
A photography and thermography combining method of obtaining, for a chosen spectacle frame model of a spectacle wearer, at least one fitting parameter to fit an ophthalmic lens into the spectacle frame model, the method comprising:
- a. taking a photograph of the wearer's face with spectacles having the chosen spectacle frame model;
- b. taking a thermogram of the wearer's face with said spectacles;
- c. identifying the spectacles' contour in the thermogram;
- d. overlaying
- 1) the identified contour, or
- 2) a boxing shape derived from the identified contour onto the photograph, thus obtaining a composite image;
- and
- e. obtaining the at least one fitting parameter from the composite image.
An electronic device for obtaining, for a chosen spectacle frame model of a spectacle wearer, at least one fitting parameter to fit an ophthalmic lens into the spectacle frame model, the device comprising:
- a photographic camera configured to take a photograph of the wearer's face with spectacles having the chosen spectacle frame model;
- a thermographic camera configured to take a thermogram of a wearer's face with said spectacles;
- a memory storing an image processing algorithm comprising:
- i) identifying the spectacles' contour in the thermogram;
- ii) overlaying the identified contour or a boxing shape derived from the identified contour onto the photograph, thus obtaining a composite image;
- and
- iii) obtaining the at least one fitting parameter from the composite image;
- and
- a processor configured to execute the image processing algorithm stored in the memory.
Dependencies are inferred from the claim text.