Welcome to the AR World !
Using "3DSuperimpose", you can get the AR (augmented reality) easily enough without using the marker.

"3DSuperimpose" is the application that superimpose 3D model on the photo. First, pick a photo from your gallery, and then load a 3D model data. Of course, you can change the size, position or direction of photo and 3D model data. And you can save the screenshot as JPEG format.

　You can read 3D model data using file browser. Available formats are PLY which is exported by "Sense 3D Scanner", STL-binary and RTD. In Addition, you can read the 3d model data that you made. In this case, you have to make the data in accordance with a defined format and save it with the extension TXT. More details of the file format：http://www.rugle.co.jp/android/txt3dformat-en.htm

- RTD format
　RTD format is the original format which is composed vertices, color and normal vector. If you want to use RTD format, you need a data conversion software "TRansRTD". It can translate the Artec 3D model data (*.obj) into RTD.
Download: http://www7b.biglobe.ne.jp/~mobileapps/files/transrtd.htm (You need a Windows PC to use this software.)

　The 3D models used for these screenshots are provided by Artec Group. (http://www.artec3d.com/)

【Function】
- 2D: rotation (unit of 90 degrees to clockwise or counterclockwise)
reflection (horizontal)
expansion / reduction,
translation
- 3D: expansion / reduction,
translation,
rotation(by XY-axes, X-axis, Y-axis, Z-axis)
display type (opaque / translucent/ un-displaying)
- save

【Checking of operations model】
- SAMSUNG SC-06D (Galaxy S3)
- SAMSUNG EC-GC100 (Galaxy CAMERA)
- ASUS Nexus 7
- ASUS Nexus 7 (2013)
- SONY Tablet S
- SONY Xperia Tablet Z
- SONY Xperia Z1
- TOSHIBA REGZA Tablet AT570