Method for recognizing intelligent terminal touch screen gestures

Abstract

The invention discloses a method for recognizing intelligent terminal touch screen gestures. The method includes the following steps that (1) an intelligent terminal enters a standby state, the gesture recognition function of a touch screen is started, and a user makes a gesture on the touch screen; (2) touch screen firmware recognizes the current gesture, whether the touch screen firmware can recognize the current gesture is judged, if the touch screen firmware can recognize the current gesture, the step (4) is conducted, and if the touch screen firmware can not recognize the current gesture, the step (3) is conducted; (3) a CPU of an intelligent terminal system is awakened, the stroke recognition function of the CPU is started at the same time, the current gesture is judged through the stroke recognition function, then a gesture symbol is sent to the touch screen firmware, the touch screen firmware stores the gesture symbol, and then the step (4) is conducted; (4) the intelligent terminal system is awakened, a screen body of the touch screen is lightened, and then the user accesses to a corresponding application of the gesture. The method has the advantages of being high in gesture recognition accuracy and low in power consumption.

Description

technical field [0001] The invention belongs to the field of touch screens of smart terminals, and in particular relates to a gesture recognition method for touch screens of smart terminals. Background technique [0002] At present, some smart terminals can wake up the system through different gesture touches in the standby state, and open the corresponding application at the same time. This function is also called gesture recognition wakeup of the touch screen. This function needs to define some simple gestures in advance. Different gestures represent different functions. For example, double-click twice to simply wake up the system, draw an "O" to wake up first and then turn on the camera, and draw a "△" to wake up first and then proceed. Positioning, drawing a "V" means to wake up first and then turn on the flashlight. With gesture recognition, it is convenient for users to quickly and easily enter certain set applications when the smart terminal is still off the screen. ...

AI Technical Summary

Problems solved by technology

However, the processing chip of the touch screen often has the following problems: first, the storage space is small, and the touch screen firmware needs to obtain finger touch information on the touch screen to recognize gestures. Because the touch screen chip has a small storage space, it can only obtain some key finger point information. Points include the start point, end point, maximum point in the x direction, minimum point in the x direction, maximum value point in the y direction, and minimum point in the y direction of the touch. Through these points, you can roughly judge what it is Gestures that look like gestures, so the gestures must be simple and clear, and it is best to complete them in one stroke; second, the processing speed is slow. Due to the cost, the touch screen chips are all implemented by single-chip microcomputers, which cannot be compared with the processing chips of current smart machines. comparable to

Due to the above two problems, the success rate of touch screen gesture recognition is low, there are many misidentifications, and the compatibility is not good

For example, when a user draws an "O" on the touch screen, it is often not well-behaved. The starting position and the pen-down position of the "O" are different from person to person. Judging the gesture through the touch screen chip may cause misidentification or Not recognized, and if the gesture is a little complicated, such as drawing an X or almost impossible to recognize, it is easy to confuse it with other symbols

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