Method and system for determining eye test screen distance
AssigneeIbisVision Limited
InventorsPeter Estibeiro, William Silva
Life of this patent
Estimating the term…
Abstract
A computer-implemented method of determining a distance from a display to a user's eye includes estimating, using a first technique, a distance between a display and a user's eye; and repeatedly estimating, using a second technique that is different to the first technique, a distance between the display and the user's eye.
Claims34
A computer-implemented method of determining a distance from a display to a user's eye, the method comprising:
- estimating, using a first technique, a distance between a display and a user's eye;
- repeatedly estimating, using a second technique that is different to the first technique, a distance between the display and the user's eye.
The method as claimed in any one of the preceding claims, wherein the second technique comprises determining a distance offset and adding it to, or subtracting it from, the distance estimated by the first technique.
The method as claimed in any one of the preceding claims, wherein the first technique comprises:
- displaying, on the display, a first target;
- displaying, on the display, a second target;
- moving the second target relative to the first target;
- receiving, via a user interface, input data from a user, the input data being indicative of the user having determined that the second target is no longer visible;
- and
- determining, based at least in part on a distance between the first target and the second target, the distance from the display to the user's eye.
The method as claimed in any one of the preceding claims, wherein the second technique comprises automatically estimating the distance between the display and the user's eye without user input.
The method as claimed in any one of the preceding claims, wherein the second technique comprises repeatedly capturing an image of at least a portion of the user's face, and determining the distance offset based on a change in image size related to one or more features within the portion of the user's face.
A method of adjusting a size of one or more images on a display using the method of any one of the preceding claims, the method of adjusting the size comprising:
- displaying at least one image on the display, an onscreen dimension of the image being at least partly based on the distance estimated using the first technique;
- scaling the onscreen dimension of the image at least partly based on the distance estimated using the second technique.
A data processing system comprising means for carrying out the method of any one of the preceding claims.
A method of determining a distance from a display to a user's eye, the method comprising:
- displaying, on a display, a first target;
- displaying, on the display, a second target;
- moving the second target relative to the first target;
- receiving, via a user interface, input data from a user, the input data being indicative of the user having determined that the second target is no longer visible;
- and
- determining, based at least in part on a distance between the first target and the second target, a distance from the display to the user's eye.
A computer-implemented method for eye testing, comprising:
- estimating a distance from a user to a display;
- displaying one or more eye test images on the display, the eye test image(s) being displayed with an absolute dimension that is based at least in part on the estimated distance.
Dependencies are inferred from the claim text.