Virtual mask fitting system
View Patent ↗Apparatus and associated methods relate to determining a fit-quality metric for a mask/face combination based upon a calculated dead-space volume between a virtual mask and a virtual face virtually aligned so as to create an integrity seal circumscribing a mouth and nose region. In an illustrative embodiment, an interactive virtual fitting system may receive a three-dimensional (3D) virtual face associated with a person. The system may retrieve 3D models of various respirators selected by user determined criteria. The system may then compute a fit-quality metric for each of the retrieved 3D models. The potential wearer may then be presented with the metrics for review. The potential wearer may select a respirator based upon these computed metrics. A virtual fitting of many respirators may advantageously reduce the time needed for selecting a properly fitting respirator while simultaneously ensuring that the selected respirator may be comfortable and well fitting.
1. A non-transitory computer readable medium (CRM) tangibly embodying a Graphical User Interface (GUI) program and containing instructions that, when executed, cause a processor to perform operations to calculate a dead-space volume, the operations comprising:
receiving a three-dimensional facial model corresponding to a face of a person;
retrieving, from data memory locations, a three-dimensional mask model that includes a contacting interface configured to provide an integrity seal continuously circumscribing a nose and mouth region of the face;
superimposing the retrieved mask model onto the received facial model;
calculating a dead-space volume circumscribed by the contacting interface and located between the received facial model and the retrieved mask model when superimposed onto the received facial model;
associating a fit-quality metric with the calculated dead-space volume;
sending, for display on the display device, indicia representative of the associated fit-quality metric and indicia representative of the calculated dead-space volume.
2. The CRM of claim 1 , wherein superimposing the retrieved mask model onto the received facial model comprises:
rotating the retrieved mask model with respect to the received facial model; and,
translating the retrieved mask model with respect to the received facial model.
3. The CRM of claim 1 , wherein superimposing the retrieved mask model onto the received facial model comprises:
translating the retrieved mask model along a direction substantially toward or away from the facial model, wherein the translation distance is calculated to correspond with an actual translation of a mask subject to a force of a mask-securing device when securing a mask to a face.
4. The CRM of claim 1 , containing further instructions that, when executed, cause a processor to perform operations comprising:
storing the retrieved mask model in a mask-model database.
5. The CRM of claim 1 , containing further instructions that, when executed, cause a processor to perform operations comprising:
storing the received facial model in a facial-model database.
6. A non-transitory computer readable medium (CRM) tangibly embodying a Computer Program Product (CPP) and containing instructions that, when executed, cause a processor to perform operations to calculate a dead-space volume, the operations comprising:
receiving a three-dimensional facial model corresponding to a face of a person;
retrieving, from data memory locations, a three-dimensional mask model that includes a contacting interface configured to provide an integrity seal continuously circumscribing a nose and mouth region of the face;
superimposing the retrieved mask model onto the received facial model;
calculating a dead-space volume circumscribed by the contacting interface and located between the received facial model and the retrieved mask model when superimposed onto the received facial model; and
sending, for display on a display device, indicia representative of the calculated dead-space volume.
7. The CRM of claim 6 , containing further instructions that, when executed, cause a processor to perform operations comprising:
associating a fit-quality metric with the calculated dead-space volume; and
sending, for display on the display device, indicia representative of the associated fit-quality metric.
8. The CRM of claim 6 , containing further instructions that, when executed, cause a processor to perform operations comprising:
Sending, for display on a display device, image data representative of the face model with the mask model as superimposed onto the face model.
9. The CRM of claim 6 , wherein superimposing the retrieved mask model onto the received facial model comprises:
rotating the retrieved mask model with respect to the received facial model; and,
translating the retrieved mask model with respect to the received facial model.
10. The CRM of claim 6 , wherein superimposing the retrieved mask model onto the received facial model comprises:
translating the retrieved mask model along a direction substantially toward or away from the facial model, wherein the translation distance is calculated to correspond with an actual translation of a mask subject to a force of a mask-securing device when securing a mask to a face.
11. The CRM of claim 6 , containing further instructions that, when executed, cause a processor to perform operations comprising:
storing the retrieved mask model in a mask-model database.
12. The CRM of claim 6 , containing further instructions that, when executed, cause a processor to perform operations comprising:
storing the received facial model in a facial-model database.
13. The CRM of claim 6 , wherein superimposing the retrieved mask model, calculating a dead-space volume, and sending indicia representative of the calculated dead-space volume are each repeated for a plurality of retrieved three-dimensional mask models.
14. The CRM of claim 6 , wherein superimposing the retrieved mask model, calculating a dead-space volume, and sending indicia representative of the calculated dead-space volume are each repeated for a plurality of received three-dimensional facial models.
15. The CRM of claim 14 , containing further instructions that, when executed, cause a processor to perform operations comprising:
sorting the calculated dead-space volumes; and,
sending, for display on a display device, the sorted calculated dead-space volumes.
16. A method for calculating a dead-space volume, the method comprising:
receiving a three-dimensional facial model corresponding to a face of a person;
retrieving, from data memory locations, a three-dimensional mask model that includes a contacting interface configured to provide an integrity seal continuously circumscribing a nose and mouth region of the face;
superimposing the retrieved mask model onto the received facial model;
calculating a dead-space volume circumscribed by the contacting interface and located between the received facial model and the retrieved mask model when superimposed onto the received facial model; and,
sending, for display on a display device, indicia representative of the calculated dead-space volume.
17. The method of claim 16 , wherein superimposing the retrieved mask model onto the received facial model comprises:
rotating the retrieved mask model with respect to the received facial model; and,
translating the retrieved mask model with respect to the received facial model.
18. The method of claim 16 , wherein superimposing the retrieved mask model onto the received facial model comprises:
translating the retrieved mask model along a direction substantially toward or away from the facial model, wherein the translation distance is calculated to correspond with an actual translation of a mask subject to a force of a mask-securing device when securing a mask to a face.
19. The method of claim 16 , further comprising:
storing the retrieved mask model in a mask-model database.
20. The method of claim 16 , further comprising:
storing the received facial model in a facial-model database.