METHOD OF IMPROVING ACCURACY OF OPERATION ON TOUCH SCREEN, ELECTRONIC DEVICE, AND COMPUTER PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide a method of improving operation accuracy of a touch screen.SOLUTION: A touch screen generates detection coordinates 107 from a touch area of a finger touching a touch surface 11a. When a user is in touch operation, an offset is generated for positioning a line-of-sight target 155 on a surface of a nail 151 in target coordinates 105. A pitch angle &bgr;, a roll angle γ, length of a nail, height h1 of a finger are calculated from an image obtained by capturing the finger in touch operation, to calculate offsets &Dgr;x, &Dgr;y. The detection coordinates are corrected with the offsets, to output the target coordinates.