Patent ID: 11857726
Assignee: RESMED PTY LTD
Field: Medical technology (Instruments)
Classification: CPC A  G | IPC A  G

Claim 22:
23. Apparatus for automatically recommending a patient interface size complementary to a particular patient's facial features, the apparatus comprising:
means for displaying a predetermined reference feature having a known dimension;
means for receiving image data captured by an image sensor, the captured image data containing one or more facial features of an intended user of the patient interface in association with a displayed version of the predetermined reference feature being displayed on the means for displaying;
means for detecting one or more facial features of the user in the captured image data;
means for detecting the displayed version of the predetermined reference feature in the captured image data; and
means for processing image pixel data of the captured image data to measure an aspect of the one or more facial features detected in the captured image data based on image pixel data associated with the displayed version of the predetermined reference feature and the known dimension of the predetermined reference feature.