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Messages - Smallpoly

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16
General / Re: Photoscan 1.4.0 - New Feature Comparisons
« on: November 16, 2017, 01:54:12 AM »
Here's a new one that does a better job of showing what the new mesh generation method gets you - it works better with thin and intricate objects, such as plants. Comparing these two shots from the same data set, the model on the right does a much better job of following along the "leafs" of this office plant with half the polycount. This was handheld so the source images are a little rough.


17
General / Photoscan 1.4.0 - New Feature Comparisons
« on: November 08, 2017, 01:39:01 AM »
I'm having some fun testing out these new features and seeing how they compare to the old methods. I thought I'd post some side by side shot of the models I'm testing with as things come out. Feel free to post yours too.

First up is "Visually Consistent Mesh Generation", found in Tools -> Preferences -> Advanced -> Use Visibility Consistent Mesh Generation Method (Experimental).

I'm testing with a data set I have from a kitschy house model I picked up from a thrift store. Some of the pics in the set weren't as clean or as in focus on the right parts as they could have been if I were to do it again, and the lighting was still off a little, but it still worked out reasonably well. Here's a crop of one of the pics.

(click for full size)


Here's a comparison where I've generated everything at the maximum quality I could get the set to produce. On the left has alignment and dense cloud maxed out and the model generated at 4 million to get as much detail in as it would support. On the right is using the new method at max quality.

The really interesting thing about the new method is that it doesn't actually need a dense cloud to work. This is also without using the new mesh refinement option since I haven't gone into testing that one yet. The visibility consistent mesh did a way better job of getting the little toothpick poke marks in the roof and the right shapes of the bricks and other little indents.

(click for full size)


Live Model:
https://sketchfab.com/models/c1fef8c991d4459d8e0ab68499f17665

18
General / Re: Agisoft PhotoScan 1.4.0 pre-release
« on: November 07, 2017, 10:56:01 PM »
Ooh, a feature for preventing ghosting? That sounds awesome! They've been a cause of huge trouble anytime I do interiors. I'll need to try that one out too. This update keeps on getting better and better.

19
General / Re: Texture buffer
« on: November 06, 2017, 10:29:16 PM »
UVs are like family, if you don't like them you can make some new ones in the 3d program of your choice.

20
General / Re: Texture delighting
« on: November 06, 2017, 10:24:19 PM »
@Alexey

Not this time! Every time I get ahead time just seems to catch up with me.

21
General / Re: Texture delighting
« on: November 03, 2017, 11:35:14 PM »
Oh, nice. I was hoping to see a nice tutorial put together. Finally bought pro a couple days ago and am really eager to try this out on one of my models. :D

22
General / Re: Capturing Photos with zoom lenses
« on: November 01, 2017, 09:34:26 PM »
Adding onto that, you can also help prevent the focal length from changing by securing it with some painter's tape.

23
General / Re: Agisoft PhotoScan 1.4.0 pre-release
« on: October 31, 2017, 01:53:40 AM »
Hey, I have a question about camera calibration from within Photoscan Standard  64-bit, build 5251.

I wanted to try out the newly merged-in camera calibration, so I loaded up the chessboard from Tools -> Lens -> Show Chessboard, took some shots, ran  Tools -> Lens -> Calibrate Lens and ended up with some aligned photos in the model view (attached).

Where do I go from here? I'm familiar with the original method with Lens as a separate program, but I don't see anywhere to save out camera profiles. Is there a new workflow to follow for that part?

Hi Smallpoly, future Smallpoly here. It looks like you did something wrong the first time because I tried things again and didn't have aligned photos showing up in the model view. Maybe you hit align photos at some point and forgot about it? Running the calibrations should show the results in the console and apply them to the "Adjusted" tab in Camera Calibration. From there you can save it out to XML as in the original Lens program.

24
This sort of thing is pretty par for the course. Have you checked your ram usage?

25
> Different resolution is because I tried to crop only the artwork, but it didn't work better.

Generally a bad idea - editing images often removes the meta data about what lens was used, exposure and other important things, and cropping is going to mess up all the math that triangulates where things are based on the perspective and lens distortion because it'll be starting from incorrect assumptions about the center of the image.

If you're trying to keep out unwanted details in the scan, you'd do better to look into the various masking options.

> Lack of details

There are a couple things you can do about that, but the rough idea is you can add them in yourself. For instance, on solid objects you can use tape to add some details for your camera focus and photoscan feature tracking to latch on to. The points between them may still have trouble but it'll give you a pretty clear idea of where the surface is supposed to be if your workflow involved retopologizing the model.

If you have photoscan pro you can print off coded markers that can be automatically detected to help alignment and model scale. The pro version also allows you to mark off tie points manually, but anything that requires going from photo to photo one at a time can be a very time consuming process.

26
General / Re: Agisoft PhotoScan 1.4.0 pre-release
« on: October 25, 2017, 11:39:35 PM »
Hey, I have a question about camera calibration from within Photoscan Standard  64-bit, build 5251.

I wanted to try out the newly merged-in camera calibration, so I loaded up the chessboard from Tools -> Lens -> Show Chessboard, took some shots, ran  Tools -> Lens -> Calibrate Lens and ended up with some aligned photos in the model view (attached).

Where do I go from here? I'm familiar with the original method with Lens as a separate program, but I don't see anywhere to save out camera profiles. Is there a new workflow to follow for that part?

27
General / Re: Only 10 out of 1280 CUDA Cores are being used by Photoscan
« on: October 18, 2017, 03:33:56 AM »
He's referring to Preferences -> GPU, where you select whether to use your GPU and the number of cores that are listed. In my case with a GTX 1080 it say "20 Cores @ 1773 MHz, 8192 MB" while the spec page on Nvidia's websites says I should have 2560. (see attached)

I'm curious about the difference in what's displayed as well.

28
Feature Requests / Re: Backface culling
« on: October 18, 2017, 03:23:53 AM »
I'd love to see this for interiors as well.

29
General / Re: Agisoft PhotoScan 1.4.0 pre-release
« on: September 28, 2017, 03:05:21 AM »
Hi Alexey, really loving the new update.

I'm getting the "A media resource couldn't be resolved" issue with the vids from my Samsung NX500.  It outputs to MP4s with H.265 rather than the more common H.264. This is on 64 bit windows 10.

If it makes a difference, I'm also able to view the vids in various media players and extract frames using DVDVideoSoft's free tool.

If you want a test file to check out, I've uploaded a copy of a ~1 second video of the checkerboard calibration screen from Lens here:
https://www.uploadthingy.com/widget?c=worldviz.com&el=1783660.mp4

30
General / Re: Model / texture is wavy and bumpy
« on: September 28, 2017, 12:02:31 AM »
That sort of thing can come from too low resolution, blurry images (out of focus / camera shake), and also from lens distortion.

1. What sort of camera are you shooting with?
2. Are you using a tripod?
3. Have you already tried calibrating your camera using Agisoft Lens?

You'll also probably want to retopo the model and reproject the textures before using it in any serious realtime project, btw.

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