How to match the camera at ortho picture?

stuffmatic / blam

🚨 No longer maintained. Check out fSpy instead 🚨 A camera and projector calibration toolkit for Blender that also does automatic 3D reconstruction of geometry with rectangular faces.

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How to match the camera at ortho picture? #16

Closed fatemax closed 6 years ago

fatemax commented 7 years ago

Hi, how to match the camera at this picture https://dl.dropboxusercontent.com/u/94590527/stairs.jpg blender 2.74 BLAM 0.6

stuffmatic commented 6 years ago

TL;DR Ortho image calibration is not currently possible.

BLAM relies on the existence of vanishing points to compute the camera transform. Since parallel lines remain parallel under an ortho projection, there are no vanishing points, which means BLAM won't be able to perform the calibration.