Page 8 - 3DF Zephyr

That is exploited when it is allowed to move around the subject/scene. If a an small or medium size object is needed to be fully reconstructed it is possible to keep the camera in a fixed position (on a tripod for instance) and to put the object on a turntable. Then 3DF Masquerade will allow to hide the background in the pictures. General rules.  Keep the subject on the center of the framing;  Avoid direct light sources that may cast shadows and hide surface areas;  Avoid high ISO values since the noise may set back the Structure from Motion phase in Zephyr;  Keep a high aperture values (f/8 - F/16) when possible as it helps get a deep depth of field on pictures;  Avoid blurry photos. Using good quality cameras as well as having a good illumination can help. Consider also using a tripod if necessary.  Have a lots of overlap on each photo (70-80%). This is probably the most important tip. Shoot as many photos you can. Each part of the scene you're shooting should appear in at least three separate views taken from different locations. This is a minimum requirement, taking more photos will likely improve the final results.  Limit the angles between photos. When moving around objects, try to keep the angle between each photo very low.  Shoot scenes with lots of detail and texture. The visual texture in the photos is what ties them together. 3DF Zephyr does not work well with uniform or highly repetitive texture and does not work at all with specular or transparent objects. You can, however, mask out certain areas using 3DF Masquerade (bundled with 3DF Zephyr)  Don't try to adjust lens distorsion as that error is quite essential during the first phase of Structure from Motion;  Even if 3DF Zephyr can deal with different cameras or lenses within the same dataset, you will obtain better results by using the same camera with the same focal