Messages

31

General / Re: add markers as Check points

« on: February 04, 2016, 12:30:20 PM »

Hi Alexey,

So say you use coded targets (measured with for instance total station) to rectify the photogrammetry model + to control the accuracy. Then the procedure should be:

1. load images
2. detect coded targets
3. align images
4. load coded target coordinates (but uncheck perhaps 25% of the coded targets in Reference pane)
5. optimize sparse point cloud (using the 75% of coded targets still checked and which have coordinates)
6. control accuracy using the remaining 25% of coded targets not used for optimization

Is this correct?

32

General / Re: PhotoScan + endoscope?

« on: November 28, 2015, 01:33:32 PM »

Nice! Results look very promising The image quality is a lot better than the endoscopes I've seen but I guess it's reflected in the price-tag: the boroscope apparently costs $ 30 000 (see YouTube comments).

33

General / Re: PhotoScan + endoscope?

« on: November 27, 2015, 06:40:00 PM »

Thanks for the reply BigBen. Yeah the endoscopes I've seen so far don't have sufficient resolution, but I imagine that nowadays pretty high-res endoscopes should be available (given what my tiny phone camera is capable of). I'll keep the forums posted in case the idea develops further

34

General / Re: Shadow Corrections for TetraCam ADC Lite

« on: November 21, 2015, 01:54:32 PM »

You can largely remove shadows (and highlights) in software such as Photoshop or Lightroom. For this type of work Lightroom is my preferred software since it lets you quickly sample, alter and save large amounts of pictures. Works best if the original pictures are in RAW format. Whether this is strictly 'necessary' depends from dataset to dataset, but to be sure I tend to just preprocess any image sequence in Lightroom for optimal results.

35

General / PhotoScan + endoscope?

« on: November 07, 2015, 05:31:39 PM »

Hey everyone!

Just wondering if anyone here has ever experimented with reconstructing the insides of for instance small objects using an endoscope? It sounds like a tantalizing prospect to be able to access the insides of hard-to-reach small spots and build 3D models but I'm wondering what the user experiences are? Are these sorts of cameras super-expensive? Do they not calibrate well in PhotoScan? Are the resulting images of sufficiently high resolution?

Think this is an interesting topic to explore further

36

Python and Java API / Re: exporting orthophotos [solved]

« on: October 21, 2015, 03:10:19 PM »

Thanks Alexey, super-fast reaction as always haha.

So should I append one of your lines to July's script as follows?

Code: [Select]

import PhotoScan

chunk = PhotoScan.app.document.chunk

bloc = "bloc_name"

type ="jpg"

path_file = "F:/Ubi3D projects/........../" + bloc + "/Ortho exports/"

views = ["Top","Bottom","Front","Back","Right","Left"]

matrices = [[[1, 0, 0, 0],[0, 1, 0, 0],[0, 0, 1, 0],[0, 0, 0, 1]],
                  [[1, 0, 0, 0],[-0, -1, -0, 0],[0, 0, -1, 0],[0, 0, 0, 1]],
                  [[1, 0, 0, 0],[0, 0, 1, 0],[0, -1, 0, 0],[0, 0, 0, 1]],
                  [[-1, -0, -0, 0],[0, 0, 1, 0],[0, 1, 0, 0],[0, 0, 0, 1]],
                  [[-0, -1, -0, 0],[0, 0, 1, 0],[-1, 0, 0, 0],[0, 0, 0, 1]],
                  [[0, 1, 0, 0],[0, 0, 1, 0],[1, 0, 0, 0],[0, 0, 0, 1]]]

d_x = d_y = 0.00103106

for i in range(len(views)):
   chunk.exportOrthophoto(path = path_file + "\\" + views[i] + ".jpg", type = "jpg", PhotoScan.BlendingMode.MosaicBlending, projection = PhotoScan.Matrix(matrices[i]), dx = d_x, dy = d_y)
Resulting message is "SyntaxError: non-keyword arg after keyword arg" - I'm sure I'm doing something stupid wrong

37

Python and Java API / Re: exporting orthophotos [solved]

« on: October 21, 2015, 02:34:15 PM »

Hi Alexey,

Being a noob at Python scripting I'm wondering how I can use this script to export 6 faces of an object as 1:1 or 1:10 scaled orthophotos. The object in question is scaled using known measurements and aligned to bounding box.

I'm assuming I can't just save the script described below, open the PhotoScan file in question and run the script?

Any help is as always much appreciated!

Tom

38

General / Re: Cars and Reflective Objects

« on: October 17, 2015, 12:40:33 PM »

With highly reflective objects I would suggest taking your pictures using a circular polarization filter to remove reflections. Additionally, when pre-processing the images for Photoscan, use software such as Lightroom or Photoshop to remove any highlights from your images (shoot in RAW for best pre-processing results).

39

General / Re: Photoscan rocks my colletion digitizing project!

« on: October 17, 2015, 12:36:56 PM »

sounds interesting! But 2017 is a long time away haha, keep us posted!

40

General / Re: Photoscan rocks my colletion digitizing project!

« on: October 15, 2015, 10:11:05 AM »

Ok cool thanks, might be good idea to put the bones on small supports from underneath then, and leave some space between the bone and the table. This is also really useful information for our discipline (maritime archaeology) where we often have to digitize a lot of ship timbers. So thanks for sharing!

41

General / Re: 2D Line Drawing from Photoscan Model

« on: October 13, 2015, 02:28:49 PM »

So far I've just exported orthophotos and then traced them in vector drawing software such as Illustrator. However any manual tracing is quite time-consuming so I'm wondering whether there aren't automated procedures to trace features in 3D CAD software.

42

General / Re: Photoscan rocks my colletion digitizing project!

« on: October 12, 2015, 09:33:23 AM »

Are the tables filtered out automatically (since they're only recognised in half the images) or do you have to clean them out of the point cloud manually ?

43

General / Organizing the Workspace?

« on: August 29, 2015, 06:56:23 PM »

I feel like this should be super easy but I can't figure out how to:

• Reorder the position of the chunks in the Workspace menu on the left
• Add an additional Workspace within the same PhotoScan file

I just want to get a bit more order in my PhotoScan files. Seems like you can click and drag the chunks on the menu on the left, but can't find any way to 'drop' them anywhere else.

If this isn't possible yet it'd be a small and simple feature request

44

General / Re: 3D City Model , Whats Wrong ?

« on: August 29, 2015, 10:45:32 AM »

Try pre-processing the images in a software such as lightroom in order to reduce the highlights / whites so that your pictures are more neutral and suffer less from the shiny white texture.

45

General / Re: Camera station questions

« on: August 03, 2015, 10:20:54 AM »

To BigBen and Marcel - This is perhaps a bit off-topic but I was wondering whether in your experience use of camera stations improves alignment times? For instance I suppose theoretically in a camera station with 5 cameras, as soon as 1 camera is aligned, PhotoScan should be able to instantly determine the position of the 4 other cameras.

What has your experience been?