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Messages - William Ringle

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General / Re: Using a GoPro & Photoscan
« on: January 02, 2015, 03:54:09 AM »
Answered my own question: tools>camera calibration. I still would like to hear the experience of others with GoPros, 7m vs 12m for instance

General / Using a GoPro & Photoscan
« on: December 31, 2014, 07:17:09 PM »
I've just obtained a Hero 4 GoPRo. I've seen a few messages in this forum, but a couple of questions. I've seen that 1.1 has fisheye support but that the user has to specify that a fisheye is being used. Where is that parameter set? Second, can the 12 mb mode be used with any success? I'd really like to get images of some tight interior spaces, so this would be useful. Third, (maybe not necessary) has anyone done a calibration of the Hero 4 lens that they are willing to share? I have trouble getting close enough to the screen with the Agisoft calibration routine to make it work properly.


General / Re: Texturing problem/question
« on: June 18, 2014, 01:40:52 AM »
I am still having trouble generating textures on some models. This model (see attached) is of a building, constructed with 146 photos (all aligned), with 7,871,517 faces and 4,194,033 vertices. For align I used high, disabled,40000,no. For dense cloud, I used medium, mild, no. For build mesh, arbitrary, dense cloud, disabled, custom, 0. I am using build 1847 (professional). To build the texture, I used generic and both average and mosaic (both of which give black textures), 4096x1. I also turned on the Enable Color Correction, same result. Orthophoto will give a colored texture, but it is unsatisfactory because of the view.

General / Alignment and order of photographs
« on: June 01, 2014, 06:08:47 PM »
I have noticed that sometimes when I add additional photographs to a chunk, the new photos are added at the beginning of the list and alignment fails. Whereas, for instance, previously 55/56 aligned, after adding 7 photographs, only those 7 or a few more align. (I am taking shots of a long building.) If I remove all the photographs and reenter them, so that they are in their correct numerical image order, nearly all will again align.

Am I doing something wrong or is this due to the algorithm for finding adjacent photos? If the latter, a useful modification would be the ability to move photos or sets of photos further down the list without having to remove and re-attach them.

General / Re: Texturing problem/question
« on: June 01, 2014, 04:36:57 AM »
Thank you for the replies and the clarification. One problem with generic textures is that often they come out black. Is there any diagnostic for that?

General / Texturing problem/question
« on: May 31, 2014, 04:54:07 PM »
I am using Photoscan to register archaeological features, using a combination of hand-held photos and pole-mounted photos (same camera, same F stop). When I generate an orthophoto, it looks great from a high angle, but the sides of the stones of low walls are textured with vertical streaks that do not represent the faces of these stones (see attached). I am including a down-sampled version of one of the original photos and the textured version. I have experimented with both ortho and generic photos, mosaic and averaged, and the results are the same. It has occurred consistently with low stone walls. Am I expecting too much of the texturing algorithm?

Feature Requests / Export image for Standard Version
« on: April 30, 2014, 11:10:41 PM »
I am using the standard version. It seems that there is no way to produce a quality image of the beautiful models Photoscan produces without going to the Pro version. Could this be added? It is a necessity for journal articles, etc. where 3D can't be utilized.

General / open areas in photoscan
« on: December 19, 2013, 04:23:00 PM »
I am using PhotoScan to reconstruct Maya (archaeological) architectural groups. While PS does great on facades, often the tops of stairs, landings, and the open areas (plazas) between buildings are not constructed. The latter are either grassy or stucco covered. In a couple of cases it did do so however, and I am not sure why. In several cases sparse points are present, but it then does not calculate a dense point cloud or obviously, meshes (or at best just a few small patches).
 My question is whether there are better strategies in photographing such areas or perhaps other settings I should use. Or are lawns and such just too featureless to work with?

Feature Requests / Selecting points by image
« on: December 07, 2013, 05:45:37 PM »
As a non-technical user, would it be possible to connect point cloud points to the images that generate them? I am thinking that for editing purposes, it would be useful to know what images are contributing to points that are clearly placed in error, or what points clearly mislocated images contribute to. Could images selected in the Workspace pane then be reflected in highlighted points? It might also be useful to help reduced redundant images in a scene.

Feature Requests / Re: desired freatures
« on: December 07, 2013, 05:36:48 PM »
Alexey: I am a little puzzled by your reply of 11/23. I am running Build 1714 of PhotoScan Std. Edition, 64 bit. From what I can tell from the web site, that is the current build, and my update checker indicates that as well. Are updates in ascending numerical order? I don't have this capability and another that I see has been implemented, removing textures. (I do remember having the export orthophoto in the pro edition.) Apologies for my obtuseness.

Feature Requests / Re: desired freatures
« on: September 26, 2013, 06:28:20 PM »
Thanks for your quick reply. Yes, for #3 I mean an output image that would be of publication quality, more than a screen shot, perhaps of variable pixel size. I am using the program to reconstruct 3D models of archaeological buildings, so it would be useful for papers to be able to export hi-resolution images.

Feature Requests / desired freatures
« on: September 26, 2013, 03:29:25 PM »
After working intensively for a few months with the program, my wish list is:
1. Ability to import a chunk, with existing alignments, textures, etc. Given that Photoscan files get very large quickly, it would be easier to work on smaller chunks in separate files, then combine them.
2. Ability to un-align chunks.
3. JPG or TIFF output. How is the user to communicate the exciting models from Photoscan for reports, articles, etc? The 3D PDFs work only for very small models.
4. Better editing tools. How is the user to edit within a cavity (a room, depression, etc.)? Perhaps a tool that selects the first object in its path, rather than boring through the entire figure.
5. Zoom magnifier tool.

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