Various contents of Mobile Augmented Reality have been developed by advancement of communication technology and popularization recently. And Mobile Augmented Reality has been applied in the various industry because it supplies the sense of the immersion and the reality to users. But those who don''t have specialized knowledge have difficulty in understanding stereoscopic shape because information of the design and related materials in the drawing suggested as design results is numerical and symbolized.

This thesis suggests 3D Model Visualization System of Design Drawing based on Mobile Augmented Reality which supports informations needed in real environment, which is made with adding virtual 3D objects to the 2D drawing by applying technology of augmented reality.
The proposed visual system makes those who don''t have any specialized knowledge understand the drawing easily, because 3D model is augmented over the drawing through camera of smart phone was added without any marker.

First, What we have to do is to extract ROI and feature point by calculating the region of rectangle using SURF algorithm to recognize the design drawing. And then next thing is to decide order of similarity by matching DB of the design drawing.
The system recognizes the design drawing which similarity is high and augments 3D objects on the design drawing. 3D model augmented on the design drawing is shown by geometric transform such as translation, scaling, and rotation and then it is visualized on the smart phone screen after adding effect of lighting and shadow.

Recognition time of suggested 3D model visualization system is reduced roughly 4 to 33 percent compared with the existing method by extracting and matching feature point only in ROI, and recognition rate shows improvement of 5 to 15 percent.
Performance testing on the Android phone of the proposed system shows display of video faster over 7 to 8 per second frame compared to the existing method.

The 3D model visual system based on mobile augmented reality in this thesis shows improved recognition rate and the number of frame per second.
So it can be adapted usefully to various industrial areas which needs stereoscopic structure shape.

Furthermore we anticipate that it can help to make effective structures for communications between users after apprehending the process and needs of structures that manager and engineer will make in manufacture, and engines, constructions and shipbuilding parts.