Nasal endoscope minimally invasive operation navigating system based on augmented reality technique

The invention relates to a nasal endoscope minimally invasive operation navigating system based on an augmented reality technique, comprising an infrared tracking camera, a three-dimensional scanner, a three-dimensional stereoscopic display, which are respectively connected with a computer, and a nasal endoscope which is connected with the three-dimensional stereoscopic display. Patient encephalic organization and a three-dimensional model of blood vessel and face skin are rebuilt by the computer; then, a first transition matrix of a three-dimensional scanner coordinate system and an infrared tracking camera coordinate system is multiplied by a second transition matrix of a three-dimensional scanner coordinate system and a three-dimensional model coordinate system of the face skin, the obtained result is multiplied by a third real time data of the position and the posture of the nasal endoscope which is obtained by the infrared tracking camera, a three-dimensional model image which is corresponding to an image which is captured by the nasal endoscope is real time rendered through the computer by the obtained data, and the image is real time overlapped with the image which is captured by the nasal endoscope and is displayed on the three-dimensional stereoscopic display, thereby realizing the blending of true and false images.