Method and device for identifying touch gestures

Abstract

The invention provides a method and a device for identifying touch gestures. The method comprises the following steps: orderly acquiring coordinate data of at least four points in a gesture track detected on a resistive touch screen; determining angles rotated by the acquired points relative to the acquired first point and comparing the angles rotated by the various points relative to the first point by utilizing the coordinate data; and determining that the touch gestures are rotary motion or telescopic motion according to an acquired comparison result. Aiming at the defect that the resistivetouch screen cannot detect respective positions of two points when the two points are touched, and can only detect a track formed by an intermediate point between the two points, the method determines the angels rotated by the acquired points relative to the acquired first point and determines a motion trend according to the angles rotated by the various points relative to the first point so as to skillfully identify the two-point touch gestures on the resistive touch screen.

Description

technical field [0001] The invention relates to a computer recognition technology, in particular to a touch gesture recognition method and device. Background technique [0002] With the continuous development of computer technology, touch screens are being used more and more widely as a convenient and intuitive man-machine interface, and the touch mode of the touch screen gradually develops from single-point touch to multi-point touch. Multi-touch is mainly two-point touch, that is, two fingers touch and slide on the touch screen to form a specific gesture to represent a specific operation. Two-point touch is mainly reflected in two touch gestures: one is a finger fixed on the touch screen Input a fixed point on the top, and the other finger performs a straight-line stretching movement away from or towards the fixed point. This gesture can be used to indicate the zoom-in or zoom-out operation of the image; the other is to fix one finger on the touch screen Enter a fixed poi...

AI Technical Summary

Problems solved by technology

For a two-point touch, the resistive touch screen detects the position of the middle point between the two points. For the above two touch gestures, the resistive touch screen detects that each point in the track made by the second finger is in the same position as the first finger. Therefore, the position value of another gesture relative to the fixed point cannot be obtained, which brings certain difficulties to the two-point touch gesture recognition of the resistive touch screen.

However, there is no way in the prior art to recognize the two-point touch gesture of the resistive touch screen.

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