Non-intrusive mouse pointer control method and system based on facial feature detection

The invention relates to a non-intrusive mouse pointer control method and system based on facial feature detection and belongs to the field of machine vision and human-computer interaction. The non-intrusive mouse pointer control system comprises an image collection module, an image preprocessing module, a feature detection module, a feature tracking module and a mouse pointer control module, wherein the image collection module is used for collecting image data through a camera to provide the data for further image processing; the image preprocessing module is used for carrying out grey level histogram equalization preprocessing on the image data collected by the camera; the feature detection module is used for detecting a nasal tip feature point of the preprocessed image data; the feature tracking module is used for tracking the position, where the nasal tip feature point may appear, in a next frame; the mouse pointer control module is used for controlling a mouse pointer to move according to the displacement between the nasal tip feature point in a front frame and the nasal tip feature point in a rear frame. A person with the disabled hands can control the mouse pointer under the situation that movement of the hands is limited, and a good control effect is achieved; the accuracy and real-time performance of the mouse pointer control system are achieved.