Method of determining whether touch data valid, and device and storage medium for the same

A touch data processing method, comprising:

• acquiring a first touch signal detected by a touch screen during a first detection period, and obtaining a first finger model according to the first touch signal;
• determining whether a finger is separated from the touch screen according to a change amount of a first touch data in the first finger model relative to a second touch data in a second finger model, wherein the second finger model is obtained according to a second touch signal detected by the touch screen during a second detection period, wherein the first touch signal and the second touch signal are touch signals detected within the same area range, each of the first finger model and the second finger model comprises an area where a finger is in contact with the touch screen and touch data corresponding to respective sub-areas in the area, the second detection period is prior to the first detection period and is adjacent to the first detection period, and the touch data in the second finger model is valid touch data;
• determining the first touch data to be valid touch data in response to the finger not being separated from the touch screen, and determining the first touch data to be invalid touch data in response to the finger being separated from the touch screen;
• wherein the determining whether the finger is separated from the touch screen according to a change amount of first touch data in the first finger model relative to second touch data in the second finger model comprises:
• calculating a first sum of values of touch data corresponding to the respective sub-areas in the first finger model;
• calculating a second sum of values of touch data corresponding to the respective sub areas in the second finger model;
• calculating a ratio of the second sum to the first sum;
• and
• determining that the finger is not separated from the touch screen in response to the ratio of the second sum to the first sum being not greater than a first threshold.