A new solution for outdoor augmented reality is introduced in this paper and its architecture and principle are described.Under the condition that the depth of field is much shorter than the distance between camera and scene

a registration method based on panoramic-video information is presented

which is an FFT-based image matching method.The FFT-based method will work to match the camera-captured image with the pre-treatment image

and then according to the match information

the virtual model will be transformed and merged to the real scene.Finally the merged scene will be sent to Head-Mounted-Display to achieve augmented reality.Compared to the existing registration method

the proposed method possesses the advantages of low computing-cost

high accuracy and high speed.Experimental results show the correctness of theoretical analysis and the feasibility of its application in the digital reconstruction of Yuanmingyuan garden.