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Messages - tezen

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Feature Requests / Re: Move object
« on: September 21, 2013, 03:41:17 PM »

...and for this function it would be nice to be able showing two ore more chunks at the same time.

Feature Requests / Re: Grid
« on: September 21, 2013, 03:33:16 PM »

Feature Requests / Re: screenshots
« on: September 06, 2013, 03:47:39 PM »
On a Win-System you can type CTRL-Print to capture the screen. Paste it via CTRL-V f.e. into a bitmap-paintsoftware.

Feature Requests / Re: Generate Masks from Dense Point Cloud
« on: September 04, 2013, 11:44:20 AM »
+1 (=100 ;D )

General / Re: Poor results for a sample job, Why? and how to improve?
« on: August 30, 2013, 07:50:19 PM »
Hello Samir/samdesh!

There?s an easy trick for (sorry: not shiny!) surfaces without any texture if you own a videobeamer or something else:
Just project a still pattern via the videobeamer onto the object and shot some photos via stativ. The last photo is the most important and has to be shooten from the same point of the one before. After aligning and meshbuilding you have to exchange the last photo with the 2nd last in order to get some texture onto the object.


General / Re: Agisoft PhotoScan 1.0.0 pre-release
« on: August 26, 2013, 07:09:11 PM »
Thx Agi! ...very nice changes!

General / Re: interesant application - removing SHADOWS
« on: June 17, 2013, 12:18:56 PM »
The idea of manual shadow-removal for PhotoScan-3D-objects:

1. You have to load the object (without any "object-texture") into a renderer of your choice (f.e. 3DsMax) and place some lightsources which should fit the real scene (like a distant-light for the sun or some bulbs for indoor-photogrammetery).
2. Within a proper UV-map on that 3D-object you have to bake the lights into the texture-map.
3.  Load the "object-texture" into the image-software of your choice (f.e. Photoshop) and use the (inversed) "light-baked-map" (point 2) as a mask for changing the saturance, intensity and so on to fit the colors of the darker/shadowed areas to the lightened areas.
4. There would be some problems on that shadow-removed-texure at the edges between the mask (recolored areas) and the unchanged object-texure which you have to clean up.
5. Asign the manually generated texture to the 3D-object and it should look quite good.

My question is if this could be done automatically.
Is there any algorythm available to calculate the direction of light sources by luminance (point 1)?
The light-map-baking (point 2) is easy doing and should not be a big problem (point 2).
There are algorythms available (for videosoftware) to match two different pictures (in this case the masked and the unmasked area) to fit each other in luminance and color (point 3).
A clean up has to be done manually (point 4) - even Photoshop cannot clean up automatically.
The easiest part is to load the new generated texture onto that object.

The automatisation of this kind would move PhotoScan a big step forward!

General / Re: Align photos
« on: June 09, 2013, 07:54:11 PM »
For slightly moving (f.e. natural) environment/objects it?s better to choose low or medium while high settings will align the cameras better at static objects (like a house or a momument). At a big amount of pictures (100 and much more) it could take too much time for "high" aligning. "Medium" is the best in most cases - best alignment at short time.

General / Re: Panoramic photos with AgiSoft
« on: June 09, 2013, 07:48:15 PM »

Instead of using a TriPod (or GigaPan) just hold a normal cam in your hands and move it around you an take lots of shots (do HDRs!) with a stretched arm. Don?t forget to have enough overlap (2/3) and to take some photos of the point you were standing at. After photo-alignment PhotoScan will generate a 3D-Model. It even works if you move your cam a short way like a stretched arm in this example. With the 3D-Modelling-Software of your choice (I use ZBrush) you?ve to build insert a (mostly half-) sphere around the place you?re standing and scale it up to fake the background. Don?t forget to flip the normals of the sphere. With some modelling skills you can sculpt between spaces which weren?t calculated by PhotoScan. Reload the finished model into PhotoScan and generate the texture. In most cases it looks better than Modos HDREs ( example: ). And with floating-point images (HDRs) you can use that as a light-source too.


Feature Requests / Re: Ultra high normal map on lower res model
« on: May 29, 2013, 12:19:59 AM »

Feature Requests / Re: Multiple BoundingBox Array
« on: May 29, 2013, 12:19:00 AM »


General / Re: PhotoScan Workflow Questions
« on: April 17, 2013, 09:01:29 PM »
Hello cbudin!
1) In the Pro-Version are markers available. Sometimes just masking (f.e. hairs) will give you good results. The camera-alignment is also very important. Sometimes "low" settings are working better - sometimes not! Take some test-shoots and compare the results by generating them in different chunks with different settings and look for yourself.
2) What camera do you use? For fast model-generation it could be good to disable some photos/depth-maps.
3) Again: What camera do you use? ...and how many Megapixels? 10 Mpix or higher values will give you much better results... take some test-shoots of the same object at different camera-settings, lightning and so on!
(Some people in this forum will disagree but for me cleaning up pictures by denoising-software can give you better results.)
Happy photoscanning... it isn't automatic as it seems to be!

General / Viewing problem
« on: April 15, 2013, 01:58:19 AM »
Hello Alexey/AGI!
Yesterday I figured out a viewing problem:
If you run a batch-process at model-generation and type in the number of desired polygons (for example 1000000) it will work - but if you reopen that batch-process it will show a wrong number of polygons (in my case always 200000). Maybe its a problem within my machine. Don't know. But it will decimate at the desired number of polygons (in this example 1000000)!
Btw: PS runs faster than ever before on my PC! Thx.

General / Re: Upside Down
« on: April 12, 2013, 01:10:56 AM »
...that's weird! Send your files to Agisoft and they will give you an answer for sure...

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