Messages

451

Feature Requests / Advanced selection. Was "Cull/Cut by Low-Density tool."

« on: September 07, 2012, 11:33:03 AM »

Hi all:
Thanks Alexey, that was a very good feature addition
I have a more ambitious suggestion. I'd call it Advanced Selection Tool dilalog
On top three Radio buttons for Selection mode: "select" "deselect" "toggle"
Main select box for: Islands, Triangles
Options for "Islands" aka "shells":

• With poly count >= than X
• with poly count <= than Y
• with poly count between X and Y

Options for Triangles: by area, by aspect(Lmax/Lmin), by diedral angle, by longest edge lenght

• value >=X
• value <=Y
• value between X and Y

This would help to clean meshes by deleting "spikes", noisy areas, and the so-called low density areas

Apply button should run selection over existing selection set if existed according to selection mode: "Select" will add new elements to current selection set, "deselect" will do the opposite and "toggle" would alternate current status for selected and non selected elements. A similar selection mode behaviour should also be available for all already existing selection tools in addition to the hopefully comming very requested irregular fence/laso selection.
Very best Regards!

JMR (Geobit)

452

General / Re: arc of point clouds

« on: August 31, 2012, 01:46:16 PM »

Bad calibration.
Autofocus enabled?
Sensor-shift or lens shift IS enabled?

453

Feature Requests / Re: Lasso tool

« on: August 28, 2012, 08:50:28 PM »

+ 10 yes please.

454

Feature Requests / Re: more view options

« on: August 28, 2012, 08:47:16 PM »

+ 6 Standard views are a must, please! isometric could also be welcome.
+ custom view save/load
+ screenshot 3d scene capture at any resolution selectable by % of the actual screen resolution and/or by fixing either width or height of the snapshot. png with transparent background would be lovely.

regards,
JMR

455

General / Re: Agisoft PhotoScan 0.9.0 pre-release

« on: August 20, 2012, 02:01:22 AM »

Dem export gives a pure black and white (just) image. Am I missing something? On the contrary the report contains a colorfull DEM. By the way, I'd suggest to add a map for errors in control points.
some ideas:
Plot ellipses onto GCPts with axes proportional to x and y errors and colored by elevation error
Create a vector field plot for xy errors and overlay a "temperature" map showing z error (signed).
Regards.
JMR

PD. Great moves in 0.9.0!!!

456

Feature Requests / lock bounding box rotations

« on: August 19, 2012, 05:10:16 AM »

I think that bounding box should be optionally liked to ground coordinate system once that absolute orientation is done by means of GCP. Height-field would then be exactly calculated.
My suggestion is to allow user to choose this behavior and also to lock bounding box rotations around x and y so that "gravity" direction kept aligned to z axis ruling the mesh creation as does in the actual terrain modeling. (the third rotation and re-sizing should be kept up to user).
regards and congratulations for last improvements.

JMR

457

General / export points and marker's image coordinates

« on: May 15, 2012, 01:45:08 PM »

I guess there is no way of import/export pixel/image coordinates for feature points nor for markers. Am I wrong?
I think it could be an interesting addition as it would allow us test different feature extraction algorithms or use third party tools to place markers

458

Feature Requests / Re: Automatic Masking.

« on: May 04, 2012, 01:52:07 AM »

I know your work, and I sincerely admire it.
but I still think that your case is not that common. I might have misunderstood something but
these are its specifics to my understanding.
1. You have more than one camera. (how could the more common single camera user do the trick of taking all photos with and without subject?).
2. Your subject is not only separated from the background, but also removable.
3. You would probably like to mask thousands of photos that share the same attitude and background to subtract. It is indeed a reasonable desire because it sounds boring... but still rather specific imho.
I wish I could say I have the same needs as you because that would mean I have your flock of cameras and your magic hopefully.

Let me point that in your setup there are interesting invariants that could be exploited if photoscan allowed that, and here (again imho) it could make a little more sense to ask for such a feature. As long as your setup is fixed in all aspects but the subject. Why the need of calculating external parameters for each set of simultaneous photos. and why not fix the bounding box too. You should be allowed to do it just once in that cases and go directly to dsm phase.

For automating  masking, let me think aloud about Tezen's approach.
suppose you have the sparse cloud, then you can resize and orient the bounding box to fit your subject... back-project the 3D points inside the box to all images and think about this new planar cloud onto your images. how could we convert that cloud into a mask?
Tezen suggest a trick that works as if those pixels were binarized and expanded until they fill a certain  region but that would probably exceed subject's boundaries (which is bad) and leave holes where little feature points were found... we need a better hint.

Convex-hull is my first bid

Here starts the game: share your thoughts

my kindest regards

459

Feature Requests / Re: Automatic Masking.

« on: May 03, 2012, 08:54:40 PM »

Your idea sounds smart and I'd like to have a tool for this too, but having said that, I find this request too much focused on an specific need which may not be of general use. I guess it could be done outside (Photoshop macro could fit) if you managed to generate mask files suitable to be imported into Photoscan project and applied to photos by means of scripting.

regards,

Jos?

460

Feature Requests / Various wishes

« on: January 09, 2012, 10:22:17 PM »

1st. a happy new year

2. Standard views for the model(top, down, front, back, left, right) plus "car mode" option for the last four ones (that means +z pointing up).
I'd suggest to allow it by rightclick on model tab and also shortcuts like caps+F1 to F6

3. Customizable grid lines to be seen onto standard ortho views and as a switchable option in orthophoto export.

4. Model colour scale view mode.
5.  I dont like soccer very much, so why not to use a colourful balloon with agisoft's logo as icon for textured model view mode
6. allow chunk lock (anchoring) and add a split-view interface for image-based 3 point picking during chunk's alingnment as a more efficient way to get the initial guess and then launch whatever you are using to get them aligned (ICP?)... I'll be pleased to explain myself further if you liked

one bug: When you are editing one marker in an image, and want to delete it (the marker) by right-click on its corresponding branch on the workspace tree, the program asks if one wants to delete the actual image instead of the marker. If user do not realize (as likely will happen), the consequence is an irreversible image deletion.

regards and +++ congratulations,
JMR

461

Bug Reports / Can't export orthophoto

« on: July 29, 2011, 07:14:05 PM »

I've built a model from six aerial images, everything has gone as usual but when i wanted to export an orthophoto, a popup simply warns "Can't export orthophoto". Any hint?

Regards

462

Bug Reports / Re: large numbers

« on: June 27, 2011, 04:03:43 PM »

Yes, of course:
My ground coordinates are something close to 462000,4628000,900
Y created a file for the GCP as follows

<?xml version="1.0" encoding="UTF-8"?>
<keypoints coordinates="local" units="meters">
<marker name="point 1">
<x>462582.342</x>
<y>4628588.892</y>
<z>940.461</z>
</marker>
<marker name="point 2">
<x>462767.209</x>
<y>4628712.763</y>
<z>940.718</z>
</marker>
<marker name="point 3">
<x>462687.261</x>
<y>4628775.345</y>
<z>927.825</z>
</marker>
<marker name="point 4">
<x>462543.799</x>
<y>4628672.434</y>
<z>926.673</z>
</marker>
</keypoints>

So I imported them and calculated with final residuals being arround 22cm
I then exported orthophoto with 0.05m/pix as aimed resolution resulting in what I called ugly ortho
Then I simply changed coordinates by substracting 462000, 4628000, 900 and tried the same ortho... the results are better looking now. Have a look
http://imageshack.us/photo/my-images/718/8pugly.jpg/ before
http://imageshack.us/photo/my-images/143/8dfine.jpg/ after

463

Bug Reports / large numbers

« on: June 27, 2011, 08:55:09 AM »

Hi, folks
I've found that ground coordinate system with long figures (ie. 123456.789, 1234567.890, 123.456) but set as local system make PS to generate ugly orthophotos.
I guess it might be related to a loss of precission associated to rounding numbers.
I'd suggest to PS team to declare a huge translation variable to shorten numbers during input and restore them to long during output.

464

General / Re: Can someone with good pc please process this job for me ?

« on: May 19, 2011, 04:40:07 PM »

I'll give a try

465

General / Re: Way to follow with a white model?

« on: May 05, 2011, 04:16:26 PM »

Hello:
White objects are allways challenging but also those with flat colours or poor texture.
I've had some success (but with different programs) by projecting a rich texture onto white object by means of one or two lcd projectors during shots. A dense text is a good texture to try with.
Take two shots from each camera pose, so you can have the same picture with and without artificial texture (make sure you don't move the projectors during photograps) .
I dont think Photoscan keeps needing texture once you have oriented photos and created model, so it should work if you simply rename untextured photos to the same names as textured ones and apply clean photos to your model. Share your results if worked.
Regards