Gesture control method, control device and control system

The invention provides a gesture control method, a control device and a control system. The method includes: enabling the gesture control device to carry out video collection in a preset direction; detecting whether a user starts a gesture control function in a reference area of a shooting visual field or not according to a user hand image in the collected video;; if the gesture control function is started, detecting whether a user completes a control operation in a working area of a shooting visual field or not according to a user hand image in the collected video; and if the user completes the control operation in the working area, detecting the moving direction and the moving distance of the user hand image in the working area relative to the reference area, thereby generating an actioninstruction corresponding to the current working mode, and sending the action instruction to the corresponding vehicle control device. According to the invention, an operator can complete sling installation, surrounding envi