Autodesk ImageModeler 2009 review

ImageModeler 2009 from Autodesk extracts 3D information from still images to construct accurate 3D models and scenes, to which you can apply realistic textures taken from the image.

It was originally developed by RealViz, and was acquired by Autodesk along with Stitcher and Movimento in May last year. However, it's still not available through Autodesk's normal sales channels, only through an online sales site.

When working with multiple images, you have to identify common characteristics on the object in each of the photos loaded in the viewer, placing calibration locators on the corresponding points. You then define a point of origin - usually a corner of a building - using the World Space tool in conjunction with these locators. A reference distance or measurement of two points in the scene is required for accurate scaling.

In the background, ImageModeler calibrates the parameters of the camera that took the shots (such as position, rotation, focal length, distortion) to allow it to calculate the 3D coordinates of the object.


Once enough points are matched, the software announces that the calibration has succeeded – or it should do. In our first attempt, the 3D space construction was imprecise. Fixing this involved tweaking the locator position to make it more accurate, but of greater help was adding constraints, such as setting the right-angled corner of a building, or specifying that a set of locators are on the same plane.

You can use distant constraints in this version, using the reference distance to aid calibration between two locators. You can also add 3D coordinates, if you have CAD data or GPS survey information.

NEXT: Spatial coordinates and single images


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