Amir Akbarzadeh's dashboard

Hi Jesse,

Take a look at the exif tag data of your Leica images. Do they have 'FocalLengthIn35mmFilm' set to '0'? If yes, then this is the problem. The easiest thing to do is to remove that tag by right clicking on the image (in windows Vista) choose properties, details tab and clear that field.
You can probably script this (and always run on your Leica photos) if you download the tool from www.exiv2.org. For some reason some cameras set this value to 0 (which is wrong). These cases will be taken care of in the next release of the synther.

Please let us know if this solves your problem.

Thanks,
Amir

Hi Peenie,
This is due to multi-threading, we didn't see it being worth having synchronized access to the log file in this case.
-Amir

Try using keys 'a' 's' 'd' 'w' 'e' 'c' for translation.
and keys ';' 'l' ''' '[' for rotation .... notice the third rotation key is " ' " :)

This is even more fun if you first turn off the images by hitting 'p'.

-Amir – Amir Akbarzadeh, on August 23, 2008 19:05

Hi Gary,
Here we are first trying to lookup the width of your camera sensor in our table, which fails with message "Could not find ccd width for 'E-3' ". I'm guessing that your camera is the OLYMPUS E-3 (http://www.dpreview.com/reviews/specs...)?

Then we are trying to instead compute the sensor width from certain exif tags, which seem to not be provided by your camera.

The reason we do all this is that we use the focal length (provided by the exif) together with the sensor width to calculate an initial estimate of the field of view of the image.

This is not an error. However it might mean that you could be getting better results since once these steps fail, we fall back on using a default initial field of view for your image. This initial value later gets refined in our processing. Sometimes it's very important to have a good initial value and sometimes less important.

One trick you can use is to set the exif tag "FocalLengthIn35mmFilm" for all of your images. The sensor width of the Olympus E-3 is 18.00 mm (from dpreview). Let's say you have taken an image at focal length 55 mm. Then the "FocalLengthIn35mmFilm" for that image should be set to 35*55/18 ~= 107 mm. You can use any exif modification tool to set/change the exif data of your images. One tool for this can be obtained from http://www.exiv2.org/.

Hope this helps,
Amir

Switch to 2D view and see if the majority of your photos are sideways (or upside down). If yes, then please rotate them to the correct orientation (using any photo software) and re-synth.

If the majority of the photos don't have correct orientation tag in their exif data and they are not manually rotated to correct orientation then it is impossible for Photosynth to know the actual world/object up direction without more in depth scene understanding.