Television man-machine interaction method based on handwriting input and fingertip mouse

The invention discloses a television man-machine interaction method based on handwriting input and fingertip mouse, which comprises the following steps: acquiring images by using a built-in or independent binocular camera of the television; performing the image three-dimensional reconstruction on two synchronously acquired images; acquiring depth information by utilizing the reconstruction and performing the foreground segmentation on a gesture image; detecting the gesture of the segmented image; according to a gesture detection result, extracting a forefinger outline and acquiring a fingertip coordinate; and finally realizing the television interaction operation of the handwriting input and fingertip mouse by utilizing the fingertip coordinate by a man-machine interaction program in the television. By using the method provided by the invention, the operation volumes for gesture detection and fingertip positioning can be reduced, the influence of the television screen light change on the fingertip positioning