IRREGULAR INPUT IDENTIFICATION
First Claim
Patent Images
1. A method to process a proximity image, comprising:
- obtaining a dispersion image, the dispersion image having a plurality of pixels;
determining an irregularity measure value for the dispersion image; and
controlling an operation of a touch-surface device if the irregularity measure value is above a specified threshold.
0 Assignments
0 Petitions
Accused Products
Abstract
Techniques for identifying irregular objects in contact with, or in close proximity to, a touch-surface are described. An irregularity measure is determined based on the regions intrinsic characteristics (e.g., energy content) rather than on the shape (or pattern) of the pixels within the region.
10 Citations
38 Claims
-
1. A method to process a proximity image, comprising:
-
obtaining a dispersion image, the dispersion image having a plurality of pixels; determining an irregularity measure value for the dispersion image; and controlling an operation of a touch-surface device if the irregularity measure value is above a specified threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 36)
-
-
16. A method to identify an irregular input source to a touch-surface device, comprising:
-
obtaining a proximity image; generating a dispersion image from the proximity image; segmenting the proximity image to identify a plurality of patches; determining an irregularity measure value for each of the plurality of patches based on the dispersion image; identifying one of the plurality of patches as being associated with an irregular object when the irregularity measure value of the one patch is above a specified threshold; controlling an operation of the touch-surface device based on the identification of the irregular object; smoothing the proximity image to generate a filtered proximity image; wherein the act of generating the dispersion image comprises subtracting the filtered proximity image from the proximity image; and wherein the act of determining an irregularity measure value for each of the plurality of patches comprises at least determining a total energy value for each of the plurality of patches. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
-
-
37. A device having a touch screen, the device operative to process a proximity image, comprising.
means for obtaining a dispersion image, the dispersion image having a plurality of pixels; -
means for determining an irregularity measure value for the dispersion image; and means for controlling an operation of a touch-surface device if the irregularity measure value is above a specified threshold. - View Dependent Claims (38)
-
Specification