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Messages - MeHoo

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121
Hi thanks for the reply!

So let me clarify.. as I will be 3d printing my camera rig, I'll have the ability to import the exact camera specs/models from 3dsmax.  This will help photoscan in it's processing? 

Essentially, telling it the rig is a locked stereo rig with exact offset values should, in my mind, help.

I'm just trying to speed up scans by removing variables.  I am just a tad confused as to how pscan works under the hood, and if there is a need for this or if it won't help.

Any info is appreciated as always.

- Justin

122
I'm only running the standard edition because I'm an artist, and the pro version is insanely expensive for what I'm doing, so perhaps this is already possible...

So I'm testing building a multiple gopro rig for on-location scans of buildings and objects.  I figure, if I can tell PScan exactly how these cameras are configured, wouldn't that increase accuracy of the scans and speed of the processing somehow?  I'd assume the alignment process would greatly improve if it knew their relationship as a constant.

Also, being able to load photosets from both cameras as "pairs" based on their folder structure would be very helpful, so image_0001 in each folder would be treated as a pair from this grouping.  MY GoPro's are wifi linked so they will be taking photos at exactly the same time.

Just a thought.  I'd like to hear if this would be helpful or not.

- Justin

123
Bug Reports / Is there a second bounding box I'm not aware of..?
« on: January 03, 2015, 02:57:02 AM »
So the aligned cameras on this long sweep of boulders that I did shows up fine, and the points seem to be accurate, but when I build the dense point cloud or mesh, they get clipped like my bounding box wasn't set large enough.  I've re-sized the box numerous times, but after a certain size it gets a clean line chopped off.  I did not notice it splitting any chunks, it just has no data after that imaginary wall.  Any ideas?  Something I'm doing wrong?  I've not encountered this before.

Standard edition, latest build.  I'll get you more info when I can, as the machine is currently processing a 100+ hour photo alignment (stress testing).

- Justin

124
Yeah my measely 24 gigs of ram gets laughed at, it seems. 

I let it run overnight, and it is now at the decimating mesh portion of the process.  See, now, I wish I could hit cancel, and have it save my mesh at this point.  Guess I'll have to let me machine page for the next 5 days and finish. 

125
Getting these long, disk-paging scans  to get to 100% after 24+ hours, but then they just stop at 100% for many hours. 

The Overall progress bar still has about a 15% gap at the end, and I can see my paged memory (Commit Size) dropping and moving, etc, but it doesn't seem like it will ever end.  Kind of annoyed that 100% isn't 100%.  Safe to assume that if the Commit Size and memory are still bouncing around that this isn't locked up?

Also, does Photoscan have an option to auto-save after each big step in the processing in case you need to kill the process?  Resuming this on a rented 200 gig machine would be awesome, for instance.

Any help is appreciated.  :/

I will say this, the latest build is working amazingly well for alignments.  Pretty happy with that, and the ability to build the dense cloud now.  I wish there was the ability to use distributed computing to build these meshes though, as I have servers sitting idle while one machine chomps away at it.

126
General / Re: Preference, cpu core - gpu core
« on: July 24, 2013, 01:12:57 AM »
Wishgranter, my thread was merged into this one because I did not see it when searching/creating my own.

127
General / Re: Preference, cpu core - gpu core
« on: July 23, 2013, 10:11:10 PM »
Thanks moderator.  Can we get the help file updated with more clear information to help other users?

128
I don't think the readme is really clear as to how many cores you should disable when allowing the GPU to help out.

I have a six core intel, so 12 threads.  I have two Quadro K4000's.  Would I disable ONE of those 12 threads per GPU or do I need to disable the same number of cores as listed in parenthesis next to the GPU?

I'm also fuzzy on this in regards to hyperthreading.  Should I disable two cores on the CPU because technically they are really one physical CPU core?

I did a quick search, but I didn't see the clarification I was after.  Apologies in advance if I missed it.

Thanks in advance!

129
General / Re: Polarizer
« on: June 07, 2012, 11:21:21 PM »
I used a polarizer and cross-polarized flash for some astonishingly good results as far as the mesh was concerned.. I had expected it to completely fail due to the lack of specular/reflection but it seemed to get most of the geo.  The test was on a terrible subject though.. a frozen dinner, so it was scrapped.

It actually saw the differences in shape quite well, but it felt that the mesh was a bit blobby.  Not sure if that was just user error.

I will surely run another test soon.

130
General / Re: Help with camera setup?
« on: January 21, 2012, 04:08:21 AM »
I tried using lens to calibrate and got worse results than doing it normally.  I gave this another go and shot differently.  Instead of orbiting around my subject, I did pan sweeps then moved then pan swept, then moved.  This produced a series of images in a straight line, looking straight forward instead of constantly changing angles.  It appeared to work better, but the color of the object (dark grey) is now causing PS to ignore half of the faces on it.  I also can't seem to get multiple sides of the object to align.  If I process all images at once, I get a bunch that align wrong and since I can't see each images' contribution to the scene, I can't very well select those images easily and reprocess them.. and since I also can't seem to get multiple chunks aligned together, I am totally clueless as to how to get a single subject processed.

I'm still battling this app, trying to find the right combination of tips and tricks.  The manual and tutorials are very unhelpful unfortunately and leave much up to the guessing phase.  :/

One question I'm still up in the air on, is whether or not flash photography works, and if a constant or variable light source is better.  My goal is to use cross-polarized flash to get perfect diffuse maps generated with very little retouching needed to remove specular highlights/shadows.  As we use this software at work to generate meshes for films, I've purchased it for myself at home to learn better.  Not being able to set markers in the images, and having to actually put tiny markers on the physical subject is wildly inconvenient and I think the biggest reason for my frustrations thus far.

I have yet to get chunks to align together as well.  Seems that feature at least on the standard edition is rather useless.

Another question I have is about Depth of Field due to aperture settings.  I'd assume that shooting a macro lens at f/2.8 is not ideal, but if I can't get flash images to work, I'm struggling with being able to hot-light everything in order for it to work.  I'm not shooting anything outdoors in daylight currently.  Is a smaller aperture like f/11+ better or does adding in more background detail cause more problems?

Any help is appreciated as always.

131
If it's driver, I'd assume it wouldn't be recognized in PS.  I'll try new drivers tonight.  Thanks.

Alexey,

Could you clarify when that stage is in the workflow so I can double check?

Pardon my ignorance here, but this is my third time actually getting to use this software.  Is that step during aligning of images, or during mesh generation, or during another step?

I wish I could afford the pro version just so I could manually set markers in the photos, but I can't on a fiddling budget.  :(

132
General / Re: Help with camera setup?
« on: January 19, 2012, 12:31:25 AM »
Wishgranter, I'm not about to send you an NDA.  I can't upload photos because I CAN'T.  Not because I won't.

Appreciate the lecture, though.

Alexey, thanks for the reply.

I will try this tonight. 

Foodman, I will also try other versions of the software tonight as well.  Thanks for the ideas.


133
I have dual GTX 580's.  Both are checked in preferences.  Two cores on my 6-core i7 are disabled as instructed. 

No GPU load is detected whatsoever during either photo alignment or mesh generation.

I'd love to utilize these monsters to do some calculations... Any help is appreciated.  What am I doing wrong?

134
General / Re: Help with camera setup?
« on: January 18, 2012, 07:52:34 AM »
Unfortunately no, I can't.  Sorry.  I'm wondering if it has something to do with the fact that the images were shot with a macro ring light.  Do light changes like that mess the calculations up?

135
General / Help with camera setup?
« on: January 16, 2012, 07:50:31 AM »
I shoot with a Canon 7D and most of my images that I'm trying to process were shot with the 100mm f/2.8 L Macro IS lens.  For some reason when I load them into photoscan and align them, they stretch out in the "z" depth really badly.  Images shot the same day with the 5d MK2 do not do this.  Is there a calibration step that I am missing?  Is there some calibration file I can load for a 7d?

Do I not have enough coverage and parallax?

Also can someone explain to me real fast.. when masking images, do you want the UNSHADED area to be the area that gets processed, or the shaded?  I assumed the unshaded area is what gets processed.

Everytime I try masking, this problem gets worse.

Thanks in advance for any help.

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