Method and system for aligning neurophysiological sensors
AssigneeEEG-SENSE Ltd.
InventorTomer Fekete
Life of this patent
Estimating the term…
Abstract
A method of aligning a wearable device having a set of neurophysiological sensors on a head of a subject, comprises capturing a three-dimensional (3D) facial image of the subject, and a 3D image of the wearable device while being placed on a scalp of the subject. Facial landmarks are identified on the facial image, and the images are co-registered based at least in part on the identified facial landmarks. A trained machine learning procedure is fed with the facial landmarks to produce coordinates of scalp landmarks, and an alignment of the wearable device on the scalp is corrected to match coordinates of the scalp landmarks with locations of the neurophysiological sensors.
Claims20
A method of aligning a wearable device having a set of neurophysiological sensors distributed at a plurality of locations over its surface on a head of a subject, the method comprising:
- by an imaging system, capturing a three-dimensional (3D) facial image of the subject, and a 3D image of the wearable device while being placed on a scalp of the subject;
- by a data processor having a circuit, identifying facial landmarks on said facial image, and co-registering said images, based at least in part on said identified facial landmarks;
- by said data processor, feeding a first trained machine learning procedure with said facial landmarks to produce coordinates of scalp landmarks, calculating said alignment state by comparing said coordinates of said scalp landmarks and said locations of said neurophysiological sensors, and transmitting said alignment state to a display device mounted on said surface;
- and
- correcting an alignment of said wearable device on said scalp to match coordinates of said scalp landmarks with locations of said neurophysiological sensors.
A system for neurophysiology, the system comprising:
- a wearable device having a set of neurophysiological sensors distributed at a plurality of locations over its surface;
- a display device mounted on said surface, and configured to display, while said wearable device is worn on a scalp of a subject, an alignment state of said wearable device with respect to said scalp;
- an imaging system for capturing a three-dimensional (3D) facial image of the subject, and a 3D image of said wearable device while being on a scalp of said subject;
- and
- a data processor having a circuit configured to process said facial image for identifying facial landmarks, to co-register said images based at least in part on said identified facial landmarks, to feed said facial landmarks into a first trained machine learning procedure producing coordinates of scalp landmarks, to calculate said alignment state by comparing said coordinates of said scalp landmarks and said locations of said neurophysiological sensors, and to transmit said alignment state to said display device.
A system for determining an alignment state of a wearable device on a scalp of a subject, the wearable device having a set of neurophysiological sensors distributed at a plurality of locations over its surface, and a display device mounted on said surface, the system comprising:
- an imaging system for capturing a three-dimensional (3D) facial image of the subject, and a 3D image of the wearable device while being on a scalp of a subject;
- and
- a data processor having a circuit configured to process said facial image for identifying facial landmarks, to co-register said images based at least in part on said identified facial landmarks, to feed said facial landmarks into a first trained machine learning procedure producing coordinates of scalp landmarks, to calculate the alignment state by comparing said coordinates of said scalp landmarks and locations of said neurophysiological sensors, and to transmit the calculated alignment state to the display device.
Dependencies are inferred from the claim text.