Overlap

Each part of the subject should be photographed from at least three distinct - but not radically different - viewpoints. The overlap between consecutive photographs should typically exceed two thirds. Different viewpoints of the same part of the subject should be less than 15 degrees apart.

For simple subjects, you can achieve this by taking approximately 30-50 evenly spaced photographs all around the subject.

For aerial photography, a longitudinal overlap of 80% and lateral overlap of 50% or more are recommended. To achieve best results, acquire both vertical and oblique photographs, in order to simultaneously recover building facades, narrow streets and courtyards. ContextCapture is remarkably robust for unstructured acquisition. You may however prepare a flight plan for more systematic acquisitions

Camera Models

ContextCapture supports a wide range of cameras: mobile phone, compact digital, DSLR, fisheye, photogrammetric, and multi-camera systems. It can process still photographs or extracted video frames from digital video cameras. It does not support linear pushbroom cameras. It does not support rolling shutter cameras under fast motion.

Although ContextCapture does not require a minimum camera resolution, a higher resolution camera allows acquisition of a subject at a given precision with fewer photographs, and thus more quickly, than a lower resolution camera. ContextCapture needs to know the width of your camera's sensor. If your camera model is not already listed in our database, you will be asked to enter this information. If you are unsure of your camera's specifications, you can consult your camera owner's manual or the

Digital Photography Review website: http://www.dpreview.com/products.