DISPLAY DEVICE, CONTROL METHOD FOR DISPLAY DEVICE AND PROGRAM

PROBLEM TO BE SOLVED: To provide a mechanism which can modify a displayed image with less operation burdens for a user.SOLUTION: A control part 110 determines a coordinate of a position corresponding to the center of gravity in a detection result output from a touchscreen part 11 as a first operation point and determines a coordinate of a position settled in advance in an XY rectangular coordinate system as a second operation point. The control part 110 identifies the moving direction of a hand based on the X coordinate and the Y coordinate of the first operation point, and when a slant of the hand identified based on the z-coordinate of the second operation point satisfies a condition (determination condition) settled in advance, the control part 110 determines the movement as a normal operation of the identified moving direction. The determination condition is that a z-coordinate of the moving direction side of the hand is larger than a z-coordinate of the reverse direction side. The control part 110 performs processing following the normal operation of the moving direction only when the control part 110 determines that the movement is a normal operation.