Messages

46

General / Re: Sparse Cloud: very few Points

« on: February 17, 2015, 10:27:41 PM »

Yes... i would be also quite curious on the difference between 16 bit tiff, 8 bit tiff and maximum quality jpg...?

Can somebody eleborate on this ?

I think that the 16 bit is usefull ONLY when generating texture, right? And even then you would have to save the texture to exr and not tiff because it doesnt support 16 bit tiffs (photoscan, as far as i know)?

so is there any advantage of using 16 bit tiffs over 8 bit tiffs in photoscan at all?

47

General / Re: Dealing with DOF

« on: February 17, 2015, 09:22:36 PM »

Yeah i have had similiar question... how does photoscan treat if i have a spot on my object in several photos, but on some photos the "spot" (area of object) is blurred (out of focus), but on the other photos (some of them), that area is sharp...? Will photoscan recognize what photos to use for that area during mesh and texture generation?

48

General / Graphic card: GTX 960 or R9 280 ?

« on: February 17, 2015, 09:03:40 PM »

Hello, what would be recommended graphics card for photoscan? Nvidia GTX 960 2 GB or ATI R9 280 3GB (or even R9 280X)? Or even some other card in this price range? Dont recommend please anything more expensive, i dont have the money, cpu will be core i7 4790K probably.

I have read here that nvidia cards are not good with photoscan, even the new one?

GTX 960 or R9 280 ?

49

General / Can photoscan autofocus-stack images withinh itself?

« on: January 03, 2015, 08:47:03 PM »

Hello
Can photoscan automatically "focus stack images" inside the application itself during the processing, what i mean mainly:

1) If i take 5 exactly the same shots, just with the focus varying, i should use special app like helicon focus for stackign, but what if i put these images directly into photoscan, will it be able to take only the sharp section of each of the images during processing into account? For example PS recognizes that only the lower third of the screen on image 1 is shaprt so it will "work" with it (for sparse, dense, mesh and texture generation), for the 2nd half of the image, PS recognizes that it should work with the 2nd image etc. So basically focus stacking (automatic) inside photoscan itself, is it possible?

2) And second question, if i take for example 24 shots of an object, and some photos some area of the object are out of focus, but on the other ones they are not, can photoscan recognize this and use it? For example on 1st photo only a head of dog is in focus so it takes this information, the tail of dog on this photo is out of focus, but the tail is shaprt and INfocus on the 8th image for example, where vice-versa the head is blurred (out of focus), photoscan can recognize this and take the "head information" (for clouds, meshes, textures etc.) mainly from the 1st photo and the information about the tail mainly from the 8 photo, am i right?

Thank you

50

General / What camera (nikon 5100,5200,3300...)?

« on: December 08, 2014, 06:08:12 AM »

Hello, i hope i got it in the right section, im thinking more seriously about photogrammetry (probably using photoscan), but i need some "real" camera (so far i have only a cheap 5 MPx camera on a cheap 110 USD phone... :-) ).

I would be scanning small to middle size objects (maximum dimensions would be of a human being or a chair). I already have a tripod, lazy susan (turntable) and I am thinking about buying some softboxes for a "studio" lighting (and an IR remote control for the future camera). All quite cheap, im and individual and dont want to spent much on it.

The problem is i do not know which camera to buy i read a lot and currently im split between nikons:

Nikon D3300
Nikon D5100
Nikon D5200

or even Nikon D3200

All of them with default lenses (yeah i know but i can buy additional later on if i do not like the kit lenses).

I will be using the camera also for other purposes (texture taking mainly) and maybe HDR, but the main focus and primary reason for buying the camera is photogrammetry.

Which one of these would you recommend? Im currently for the Nikon 5100, i think the smaller MPx count (16 vs 24 in higher versions) isnt that big deal, because i do not have the pc to calculate each model on the highest settings.

But im also quite interested in the D 3300 which doesnt have that Low pass filter  (OLFP or something) which should make the images more crisper, and i heart that its quite usefull and big thing in photogrammetry.

Which of these cameras would you recomend to me please?