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Topics - fxpop

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Face and Body Scanning / New User Problems with Body scanning
« on: January 27, 2014, 06:30:39 AM »
Hi,  I just bought Photoscan and love it!   :)    But I'm running into problems as I'm starting to learn it, the Photoscan noob that I am.

I've had success with scanning basic inanimate objects like small statues:

(There is some bumpiness to the scan, but it is totally usable and good enough for me to bring into another app like 3DCoat and retopologize it and texture bake it smaller if I wanted - though I suspect the bumpiness I am experiencing is user error.)

My problems arise whenever I try to scan a person.  No matter what I do I keep getting a very bumpy surface that makes the models unusable.

I'm not sure if this is a calibration issue, a camera quality issue, a color tracking issue with noise from the images, or me having the settings wrong when aligning, building the point clouds and mesh.  I'm assuming the bumpiness is not because of micro movements in the person breathing or whatever, because there is not bigger bumpiness in the chest area where one would expect the most moving.

I have tried scanning people with a 12Mp Sanyo HD2000 camera as well as a Canon 5D mkII and both have similar issues so I am expecting the problem to be something I am doing wrong.

I am scanning with 1 camera, basic indoor lighting, and also lighting using one of these:
while taking pictures handheld - but I am careful about focus and overlap between pictures.

I'm talking particularly about the bumpiness on the skin and face and arms...

Here is an example of how it turns out:

I would greatly appreciate any help in workflow or settings to get a more acceptable output.  Obviously, I'm not going to get the results that the guy who uses 80 DSLRs on tripods in perfect studio lighting, synced together with 1/10000th sec shutter, but surely a handheld series of photos can do better than what I've done.  Perhaps if someone could help me with calibration that would be useful?  I tried using the lens app from here, but kept getting errors trying to import its xml into Photoscan - so I tried importing the checkerboards into Photoscan itself as a different chunk but couldn't figure our how to get it to use it all correctly.

Thanks very much for your help!!

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