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Messages - scr1tch

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Face and Body Scanning / Re: Small Tie points and bumpy surface by heads
« on: December 09, 2017, 02:18:30 AM »
Hello. The pictures do not have their metadata in the mentioned test. I have now scaled down the images to 1MP and tested them again, and so I get much better results. how can that be?

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Face and Body Scanning / Small Tie points and bumpy surface by heads
« on: December 07, 2017, 06:28:58 PM »
Hello everybody. I have problems with the scan of a face. The surface is very bumpy. Short to the equipment:
Sony Nex 5n, cheaper Chromakey, softboxes for lighting.
I only use manual focus. The photos are so beautiful with 16 megapixels that I can recognize individual pores when zooming in. Lack of sharpness is not the problem. After shooting the pictures I increase the contrast and create masks in Photoscan.

In order to shorten the computing time for my tests, I work with only four photos, which is sufficient to calculate the front of the face. When I start aligning the photos, I only get ~ 600 tie points. In a test with a porcelain figurine, there are also 4 photos over 6000! How can this discrepancy come about? And why are the surfaces of the head so bumpy?

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General / Worse results with high settings than middle ones
« on: December 03, 2017, 11:56:30 PM »
Hi Guys. I would like to create a bust of myself and have made in front of a greenscreen some photos of myself (tripod, soft boxes, Sony Nex 5n). The photos all have a good sharpness.

I then used Photoscan to create some masks that are not perfect but are 90% good. If I align the photos in medium quality (I tested it for quick editing with only 6 photos) then the result is not perfect, but okay (see first photo). But if I adjust the photos with high settings, a much worse result than with medium settings comes out, which is not useful at all. What is going wrong? Do I have to bring the picture into the editing, where only the background can be seen?

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General / Re: new to agisoft, turntable workflow?
« on: November 26, 2017, 02:54:15 PM »
Hello. I found this thread when researching photogrammetry with objects on turntables. Some good tips have already been given here.
@ Fluca: Your examples look really great! Can you possibly give some details how you hated the photos taken, how many have you used and what you had to do on the PC nor to do any preliminary work to get these models like that? It would be nice if the whole thing is described as a beginner-friendly, then many other people who are dealing with this method just new, something of it :)

Maybe you can upload your raw image dataset here so that people can first try on perfectly captured images before they start with their own maybe not quite perfect images and stumble over pitfalls, which might also depend on the image quality. That would be great!

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General / Model has large holes in point cloud
« on: November 22, 2017, 03:54:02 PM »
Hello. I took some photos of a frog figure with a Sony Nex 5N (59 in total) and created a point cloud and a mesh from it. Now the model on the legs shows very big clear holes, although the photos cover this area. What could have gone wrong?

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General / Re: Masking
« on: November 21, 2017, 11:18:03 PM »
Hello. I tested a little bit again, but was not successful. How do I get that, what does this in the video?
https://youtu.be/NuJCRIkmn60?t=171

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General / Re: Masking
« on: November 20, 2017, 10:07:52 AM »
Thank you for the speedy response. Sounds comprehensible so far, even if that deviates significantly from the video. I'll try it out today, but it looks promising :)

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General / Masking
« on: November 20, 2017, 01:00:34 AM »
Hello. I saw in a YouTube video how to create a mask and apply it to all the other images so that a mask was automatically created from each image. I would also like to do that, because so later after the generation of point clouds no longer the background needs to be edited and cut away. But this does not work for me. How should I proceed exactly? Unfortunately, the video I saw referred to an older version of PhotoScan.

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