DEVICE AND METHOD FOR DETERMINING EYE MOVEMENTS BY TACTILE INTERFACE

• US 20190021589A1
• Filed: 12/27/2016
• Published: 01/24/2019
• Est. Priority Date: 01/15/2016
• Status: Active Grant

• Current Assignee: Centre National De La Recherche Scientifique, Université Claude Bernard Lyon 1
• Original Assignee: Centre National De La Recherche Scientifique, Université Claude Bernard Lyon 1
• Inventors: Sirigu, Angela, Duhamel, Jean-Rene, Lio, Guillaume
• Granted Patent: US 10,779,726 B2
• Time in Patent Office: Days
• CPC Class Codes: A61B 3/0033 characterised by user input arrangements
• CPC Class Codes: A61B 3/0041 characterised by display arrangements
• CPC Class Codes: A61B 3/024 for determining the visual field, e.g. perimeter types
• CPC Class Codes: A61B 3/113 for determining or recording eye movement
• CPC Class Codes: A61B 5/163 by tracking eye movement, gaze, or pupil change
• CPC Class Codes: G06F 2203/0381 Multimodal input, i.e. interface arrangements enabling the user to issue commands by simultaneous use of input devices of different nature, e.g. voice plus gesture on digitizer
• CPC Class Codes: G06F 3/013 Eye tracking input arrangements G06F3/015 takes precedence
• CPC Class Codes: G06F 3/038 Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
• CPC Class Codes: G06F 3/0488 using a touch-screen or digitiser, e.g. input of commands through traced gestures

Abstract

An eye-movement determination method includes providing an a touch display and a memory that stores an image that includes a point of interest, wherein the image is a stored image, and repeatedly executing a set of steps. The steps include determining a position of a contact point, locating a corresponding position in an image that is displayed on the touch display, generating a degraded image from the stored image, displaying the degraded image on the touch display, and recording successive positions of the contact point. The contact point is a point at which a user contacts the touch display. The degraded image is substantially identical to the stored image with a clear zone but degrades beyond the clear zone.

Claims

1-10. -10. (canceled)

11. An apparatus for determining eye movement, said apparatus comprising a touch display, a memory, and a processor configured to repeat a set of steps, wherein said set of steps comprises determining a position of a contact point at which a user touches said display, said position being a determined position, locating a corresponding portion in an image that is being displayed on said touch display, generating a degraded image based on a stored image, displaying said degraded image on said touch display, and recording successive positions of said contact point, wherein said degraded image is substantially identical to said stored image within a clear zone thereof, wherein said clear zone includes said determined position and surroundings thereof, wherein said stored image is degraded beyond said clear zone by a peripheral degradation parameter.

12. A method comprising determining eye movements, wherein determining eye movements comprises providing an apparatus, executing a set of steps and repeating execution of said set of steps, wherein said apparatus comprises a touch display and a memory that stores an image that includes a point of interest, wherein said image is a stored image, wherein said set of steps comprises determining a position of a contact point, locating a corresponding position in an image that is displayed on said touch display, generating a degraded image from said stored image, displaying said degraded image on said touch display, and recording successive positions of said contact point, wherein said contact point is a point at which a user contacts said touch display, wherein said degraded image is substantially identical to said stored image with a clear zone, wherein said clear zone includes said contact point and surroundings thereof, and wherein said image is degraded beyond said clear zone using a peripheral degradation parameter.

13. The method of claim 12, wherein generating said degraded image comprises blurring said stored image beyond said clear zone.

14. The method of claim 12, wherein generating said degraded image comprises causing an average SSIM index between the stored image and said degraded image to be between 0.4 and 0.8, wherein a ratio of an area of said clear zone to an area of said degraded image is between 0.01 and 0.5.

15. The method of claim 12, wherein generating said degraded image comprises causing an average SSIM index between the stored image and said degraded image to be between 0.4 and 0.7, wherein a ratio of an area of said clear zone to an area of said degraded image is between 0.01 and 0.15.

16. The method of claim 12, wherein said clear zone is a circle that has a diameter of at least eight millimeters around said contact point.

17. The method of claim 12, further comprising sampling said contact point following lapse of an interval since obtaining an immediately preceding sample of said contact point, wherein said interval is greater than or equal to ten milliseconds and less than or equal to fifty milliseconds.

18. The method of claim 12, further comprising, further comprising waiting for lapse of an interval after executing said set of steps and repeating said execution of said set of steps only after lapse of said interval, wherein said interval is at least five seconds long.

19. The method of claim 12, wherein said stored image illustrates a plurality of living beings, each of which forms a point of interest.

20. The method of claim 12, further comprising recording successive positions of said contact point and a reference visual exploration path, determining that a divergence between said successive positions of said contact point and said reference visual exploration path has exceeded a predetermined threshold, and, in response, drawing attention to an occurrence of a visual exploration anomaly.