What is this?

This is blam, a camera calibration toolkit for Blender in the form of an add-on written in python that facilitates modeling based on photographs.

The add-on is functional but still in development. To get development progress updates, either check back here regularly or follow me on twitter.

Bugs can be reported here.

Getting started

1. Download the latest stable(ish) version (or get the latest svn revision).
2. Install
3. Check out the introduction video and read the user's guide. There is also a slightly outdated tutorial video here.

Getting involved

The easiest way to get involved is testing the add-on and providing bug reports. This blenderartists thread is a good place to provide other kinds of input, like feature suggestions

If you're interested in helping out on the coding side, let me know.

Nerdy details

• HTML source code documentation can be found here.

• The focal length and camera orientation estimation is based on Using Vanishing Points for Camera Calibration and Coarse 3D Reconstruction from a Single Image by E. Guillou, D. Meneveaux, E. Maisel, K. Bouatouch.

• The algorithm for 3D reconstruction of rectangle based geometry is an extension of the AC algorithm described in Recovery of Intrinsic and Extrinsic Camera Parameters Using Perspective Views of Rectangles by T. N. Tan, G. D. Sullivan and K. D. Baker.

• blam does least squares solution of systems of linear equations using the pure python linear algebra routines available here and does not depend on external packages such as scipy.