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Messages - Smallpoly

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Bug Reports / Mask Import Not Respecting Photo Orientation
« on: July 20, 2019, 01:12:14 AM »
Not sure if this counts as a bug or a feature request.

The problem is as follows:
1. Some cameras, even nice ones, do not have the ability to disable auto-rotation on images
2. Photoshop does not preserve orientation metadata when saving out masks
3. Metashape uses the orientation information to display the photo with the correct orientation, but does not take it into account when importing masks.

This will cause the mask to either come in with the wrong orientation, or it will throw an "Image Size Mismatch" error.

Photos can have their orientation fixed manually in windows explorer, or a similar workaround can be done to force the mask to use the same orientation. Workarounds like this add extra hands-on work and leave more room for user error.

I'd absolutely love it if Metashape would use the embedded orientation data to rotate the imported mask data to the correct orientation automatically by assuming each image already has its "up" direction correctly set. I"m sure others would too!

General / Re: PhotoScan Roadmap
« on: June 07, 2018, 09:36:03 PM »
I don't know about them, but I'd really love to see more features targeted towards game dev. It's really starting to catch on for certain areas. I dream of the days where photogrammetry software will pop out a ready to use low poly mesh with normals, AO and maybe even gloss and metallness reconstructed from the high poly mesh and photo set.

Feature Requests / Re: Out-of-Focus Detection with Mosaic Texture
« on: May 31, 2018, 12:34:49 AM »
Sure. You can download the project here. (856MB):
Or if you just need the photos (512MB):
The files expire in 30 days, so let me know if you need them up again later on.

Here's a partially cropped example image at full res. I'm shooting at 28.2MP. The out of focus sections in this shot are fairly well covered by other photos.

General / Re: indoor scanning
« on: May 30, 2018, 09:52:33 PM »
For the shoot locations, the goal is to maximize parallax while still having good overlap. Markers are great, and help deal with the "blank white walls" problem of anything built in the modern era.

Link to the manual:

This is the diagram Dave is referring to.

Text from the docs:
• Number of photos: more than required is better than not enough.
• Number of "blind-zones" should be minimized since PhotoScan is able to reconstruct only geometry
visible from at least two cameras.
In case of aerial photography the overlap requirement can be put in the following figures: 60% of side
overlap + 80% of forward overlap.
• Each photo should effectively use the frame size: object of interest should take up the maximum area.
In some cases portrait camera orientation should be used.
• Do not try to place full object in the image frame, if some parts are missing it is not a problem providing
that these parts appear on other images.
• Good lighting is required to achieve better quality of the results, yet blinks should be avoided. It is
recommended to remove sources of light from camera fields of view. Avoid using flash.
• If you are planning to carry out any measurements based on the reconstructed model, do not forget to
locate at least two markers with a known distance between them on the object. Alternatively, you could
place a ruler within the shooting area.
• In case of aerial photography and demand to fulfill georeferencing task, even spread of ground control
points (GCPs) (at least 10 across the area to be reconstructed) is required to achieve results of highest
quality, both in terms of the geometrical precision and georeferencing accuracy. Yet, Agis

Feature Requests / Out-of-Focus Detection with Mosaic Texture
« on: May 30, 2018, 09:30:04 PM »
I'd really love to see a higher quality result from Mosaic textures that weeds out blurry sections of photos, favoring things the most in focus instead, even if it significantly extends the processing time. Not having to go back and try to weed things out and render individual photos to patch things up would easily make it worth it. I'm willing to wait for a higher quality result.

For instance, in textures like this from a recent scan of an english muffin...

...the blurry parts of the texture are coming from a photo I took when focusing on a different part, while the part used in the texture was tilted away. The in-focus parts are coming from sections that were shot straight-on.

General / Re: New alignment parameter for background suppression
« on: May 30, 2018, 08:29:26 PM »
I'm not associated with Agisoft, but I can take a look if you feel like PMing me your photo set.

Just from the photos, it would probably help the results to take the shot from the other side, so you're getting the more brightly lit side, but it could be plenty of other things too.

General / Re: New alignment parameter for background suppression
« on: May 22, 2018, 09:24:06 PM »
Just tried out the new masking approach. This is awesome and removes so much redundancy! Really clean scan too!

Data Set Examples:

General / Re: Average vs. Mosaic texture map
« on: May 08, 2018, 03:02:14 AM »
Mosiac attempts to pick the sharpest photo(s) for each face or set of faces to give the sharpest and most accurate result. Average does a nice job but tends to be softer.

If I'm not mistaken, the main requirement for getting good results with mosiac is to always have the focal point be in the center of the image, and to be careful to discard anything that's out of focus so it doesn't get picked for the texture.

I don't care for the sharpening artifacts on Mosiac either, though I'm really thankful for the new ghosting filter.

Blur can cause a lot of problems for sure, and messes up texture quality as well. I haven't found any magic bullet for getting useful results out of blurry images. It's slightly better than nothing but needs a lot more cleanup.

The next time you do a shoot like this I'd recommend both using larger markers, and overshooting - i.e. if your subject needs 200 photos for a good result, and you predict 50% will come out blurry under the conditions and gear, then try to shoot 400-600 so you'll have enough good ones left over after taking the blurry ones out to pasture.

General / Re: My photos never seem to calibrate (always NC) lately
« on: December 07, 2017, 11:04:27 PM »
Can you share the photo set you're using for calibration?

General / Re: Units for gradual selection values
« on: November 27, 2017, 11:50:22 PM »
I find there's sometimes very little or no observable effect.

That's been my finding as well.. except when getting rid of low photo count images. Points with just two photos tend to be very unreliable, so I tend to remove them when I'll still have enough higher quality data left over.

General / Re: How to deal with lakes
« on: November 27, 2017, 11:47:50 PM »
Usually for this sort of thing I'll bring the model into a 3D program, in my case 3ds max, then add the new geometry and re-export back to Photoscan.

General / Re: Photoscan 1.4.0 - New Feature Comparisons
« on: November 21, 2017, 10:23:12 PM »
Next up, here's a comparison between Mosaic texturing with and without the new ghosting filter option. Average is also added for comparison. Filtered mosaic has a very clean result while staying very sharp. Average is also fairly clean, but much softer of a result.

The test object I used here was the ceiling of an interior I shot a while back that had a bunch of hanging wires and other things. In that project I ended up having to do a lot of cleanup in Photoshop with healing brush and other tools. This would have had a nicer result and saved a lot of manual work as well.

Unfiltered Mosaic (click for full resolution)

Filtered Mosaic (click for full resolution)

Average (click for full resolution)

Animated Comparison (click for full resolution)

General / Re: Agisoft PhotoScan 1.4.0 pre-release
« on: November 18, 2017, 03:38:56 AM »
Hey, can I get some more detail on what the "Use Strict Volumetric Masks" is doing with the new mesh workflow?

General / Re: Photoscan 1.4.0 - New Feature Comparisons
« on: November 18, 2017, 02:15:38 AM »
Grin - the 1.4.0 pre-release is at the top of this thread, stickied to the top of General:

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