Survey Image Aligner - Geodetic & Construction Workflow

Survey Image Aligner requires Blender 5.0 or newer, so it targets recent versions of Blender rather than older releases. It's listed as Blender Extension compatible and ships as an add-on, integrating through a clean, minimal UI. If you're on an earlier Blender version, you'd need to update before installing. Because it works on existing image planes rather than replacing them, it fits into a Blender scene you've already set up for survey or reference imagery.

Survey Image Aligner needs image planes that already have known reference point coordinates to do its work. From two known points, it calculates the exact rotation, scale, and translation required to align the image to the XY plane in world coordinates. This two-point correspondence replaces manual eyeballing and supports consistency and repeatability across site photos, scanned drawings, or survey imagery. In practice, you supply an existing image plane and the reference coordinates, and the add-on handles the transformation non-destructively.

Survey Image Aligner can align survey photos to real-world coordinates, which is one of its core use cases. It also supports preparing reference images for civil engineering models, building technical visualizations and site layouts, and creating accurate underlays for modeling from measured data. Each of these relies on the same two-point method to compute rotation, scale, and translation in world coordinates. The add-on is positioned for infrastructure, construction, and site visualization where reference data needs to match reality rather than be approximated.

Survey Image Aligner is listed as free in this catalog. Licensing terms can change, so check the developer's page for current details before you rely on it for a project. It's distributed under the GPL license and published as a Blender add-on, listed as Blender Extension compatible. A demo video is also available if you want to see more about the add-on before you install it.