Thread: Lens distortion
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jrinconr is offline jrinconr
2010-10-21 , 11:35
Posts: 32 | Thanked: 14 times | Joined on Feb 2010 @ Alcala de Henares, Madrid, Spain
#3
Originally Posted by Netweaver View Post
very interesting from a scientific point of view. Is there visible practical use during 'normal', non-Matlab/camera assisted lab experiment environment ?
in photogrammetry(for near and far objects), we use "metric cameras", and i'll try to use the n900 camera in photogrammetric measurement of small objects

Originally Posted by Netweaver View Post
I guess after going through all calibration steps, either on the PC or on -possibly- a N900 version of the calibration tools, using both distortion values into the Fcamera driver might possibly result in better photos. But would the results be visibly clearly better ? Any idea ? Any examples to show made by similar hardware ?
of course, for example, in Hugin software(http://hugin.sourceforge.net/), you can use these parameters to obtain a better pic. or at this abstract you can find other application.http://www.springerlink.com/content/r504u74722775771/


Originally Posted by Netweaver View Post
Also, are the production parameters of the N900 (or in general) camera module lenses tight enough to do the calibration once and then use it for all N900s ? Or are there normally significant differences between production runs possible ?
unfortunately, with non-metric cameras, you need to calculate the parameters for each one.

Originally Posted by Netweaver View Post
TO come back to your question : Look here
http://wiki.maemo.org/N900_Hardware_VGA_Camara_module

And click through to the datasheet :

Pixel size 2.2 μm x 2.2 μm
I see, but these specs are from frontal camera.

thanks for your comments

See you
Last edited by jrinconr; 2010-10-21 at 12:58. Reason: link forgot