Space gesture input method

Abstract

A space gesture input method achieves measurement and resolving of gestures by means of a gyroscope-free inertial measurement unit and a special hardware layout scheme. The gestures are sent to a host through a wireless radio frequency unit after processing such as dimensionality reduction, characteristic extraction, mode recognition and encoding. Therefore, a handwritten character inputting function and a cursor positioning function are achieved. A corresponding hand-held device comprises a gesture collecting and resolving unit, a mode recognizing and encoding unit and a wireless transmission unit. The method and the device avoid use of a gyroscope. The defect that equipment is poor in large-acceleration impact resistance is overcome. Gesture detection is not influenced by postures of devices. Reasonable hardware layout of the inertial measurement unit guarantees low cost of handwriting resolving. A mode recognizing method based on stroke characteristics reduces storage space requirements and computation complexity. Relative algorithms are easy to achieve in a wireless SOC, and low cost and compatibility of the devices are guaranteed.

Description

technical field [0001] The invention relates to wireless sensing technology and pattern recognition technology. It specifically relates to a space gesture input method. Background technique [0002] At present, traditional input technologies such as physical keyboards, mice, handwriting tablets, and touch screens are widely used in personal computers, mobile terminals, and handheld devices to realize human-computer interaction. These input technologies and devices generally use photoelectric sensing and array scanning methods in a limited two-dimensional plane to realize information input, and their limitations are mainly reflected in the aspects of not easy to carry, limited writing area, and poor flexibility. [0003] With the development of wireless sensing technology and the gradual popularization of Internet of Things applications, new methods and concepts such as wearable computing and wearable sensor networks provide new ideas for the diversification and humanization...

AI Technical Summary

Problems solved by technology

Due to the large drift of the MEMS gyro, the inability to adapt to large angular velocity measurement, and the poor ability to resist large linear acceleration impacts, etc., the reliability and accuracy of the equipment are low.

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