Touch screen calibration method and apparatus, a touch screen, a touch system and a display

The invention relates to a touch screen calibrating method and device, a touch screen, a touch system and a display. The method comprises the following steps of: initializing parameters in a corresponding relational expression of two imaging devices to obtain a primary corresponding relational expression of the two imaging devices; acquiring the image data of a touch object positioned at the edge of the touch detection area of the touch screen, wherein the image data is collected by the two imaging devices; and according to the primary corresponding relational expression of the two imaging devices and the image data collected by the two imaging devices, by adopting an optimization algorithm, acquiring the value of the parameter which enables the total error of the position information of the touch object positioned at the edge of the touch detection area of the touch screen relative to the preset one-dimensional position information of the touch object positioned at the edge of the touch detection area of the touch screen to be minimum. Through the invention, the cost can be lowered, the stability and consistency of the accurate values of the obtained parameters are better, the error is smaller, and the blind area of the touch screen is effectively reduced.