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Messages - jeancampos

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1
General / Re: Rotating Object
« on: September 10, 2013, 08:18:15 PM »
Hi Alexey,

I tried to upload the images without the object in the scene, but do not see Photoscan to load. Even saving a photo in .png format.

Is there something else to do?

2
General / Scan of small objects using Macro lens
« on: August 18, 2013, 06:39:37 AM »
Hello Guys

A while ago, I did some testing with Agisoft using a macro lens low cost in my Canon 60D to shoot a seed CASHEW (fruit typical of Brazil), the object in question here does not have more than 4 cm in size, an object too small to photograph without using a lens adapted to it. Below the  used adapter Macro.

http://www.ebay.com/itm/RAYNOX-DCR-250-Super-Macro-Conversion-CLOSE-UP-LENS-52mm-55mm-58mm-67mm-map-/130741876563?pt=Camera_Lenses&hash=item1e70d2b753

Whereas photographed using only one camera and circling the objects, just to experiment, I was amazed with the result .

http://d.pr/i/tol1

http://d.pr/i/yri

http://d.pr/i/YrrK

http://d.pr/i/n43O

http://d.pr/i/YrN6

The results are far to apply for work, and is difficult to control focus also, as today we have a RIG of 13 cameras, I'm tempted to invest in new adapters for lens for these cameras, so you can use to capture small models, as for example strawberries.

And here the angle that the photos were taken:

http://d.pr/i/A5qz

My question is if I invest in a better lens, is it really going to achieve satisfactory results after this investment, considering that 13 macro lens good quality, can cost a lot of money.

Anyone here ever had a similar experience, and like to share?

All the best

Jean Campos



3
Hello Magnus,

As was previously spoken, We made ??new tests with the new Rig scan in our studio, we use two lighting Daylights (5500K each) + 2 Flashs + 1 Octagon for  inferior lighting. With the following settings: F: 9, 1/20 and ISO 100

https://dl.dropboxusercontent.com/u/10237587/Artes_Web/Forum/Agisoft/Captura%20de%20Tela%202013-07-09%20%C3%A0s%2000.07.30.png

And the preliminary results are very encouraging:

Here are some pictures:

https://dl.dropboxusercontent.com/u/10237587/Artes_Web/Forum/Agisoft/Captura%20de%20Tela%202013-07-08%20%C3%A0s%2023.48.59.png

https://dl.dropboxusercontent.com/u/10237587/Artes_Web/Forum/Agisoft/Captura%20de%20Tela%202013-07-08%20%C3%A0s%2023.48.49.png

Unfortunately the number of points is not sufficient to capture fine details of the skin, can at most 11,000 cloud points:

https://dl.dropboxusercontent.com/u/10237587/Artes_Web/Forum/Agisoft/Captura%20de%20Tela%202013-07-08%20%C3%A0s%2023.49.35.png

Whereas these shots are not using the projector, I wonder how we can capture more points without using noiseprojection.

There were some problems in the neck, under the chin, had to take the intense noise in Zbrush, I could not resist and did a quick render in Modo, no pretense, rs:

https://dl.dropboxusercontent.com/u/10237587/Artes_Web/Forum/Agisoft/Captura%20de%20Tela%202013-07-08%20%C3%A0s%2023.47.51.png

Cheers

Jean campos

4
Hi Magnus

Incredible same result you had with only 6 cameras, have to understand what I'm doing wrong.

This is a test I did using 10 cameras.

https://dl.dropboxusercontent.com/u/10237587/Artes_Web/Forum/Agisoft/foto% 20% 283% 29.JPG

But alignment centered on each camera is generating much noise in the nose, I'm having trouble with that.

But this result is not correct, I redesigned the space where the scans happen, I built a room all white, and realinhei towers for a set of 180? with 30? spaces each. The cameras are focusing on automatic and ISO 100, with 18 -55 mm lens. Today I will test the new rig, and see.

My dream is to reach ul result close to this:

https://dl.dropboxusercontent.com/u/10237587/Artes_Web/Forum/Agisoft/Grey-Large.jpg

Let us work.

5

Hello Magnus

I am very grateful for the help you have given to beginners like us.
I want to share with you the great results with our Rig 13 X Canon 1100D using noiseprojection with a projector EPSON 800x600. We had a fantastic difference of the results of the cloud in PS.


Result without the projector:

https://dl.dropboxusercontent.com/u/10237587/Artes_Web/Forum/Agisoft/Screenshot%20on%207.1.2013%20at%2010.17.26%20AM.png

Results using the projector:

https://dl.dropboxusercontent.com/u/10237587/Artes_Web/Forum/Agisoft/Screenshot%20on%207.1.2013%20at%2010.17.15%20AM.png

We are buying a HD projector, and the used here was borrowed rs. I think the next test will be more complete. Our rig allows us to only 180 ° for facial scan, we are buying 19 more DSLRs to be able to complete the 360 ° and thus get a more complete result. Magnus, I researched thoroughly the Nikon D3200, and I believe we will make a Hybrid Rig, our 13 Canons + 19 Nikons, I expect a more refined result, for pores and small details of expression, something that Canon still with no success.

I'm also thinking about how to solve the problem of texture. In this section we had to process the 24 images, and 12 images with projector to generate the model, and 12 images without it on only to generate the texture, unfortunately the PS does not allow designing the texture images added later output would be the same for the projection Zbrush and Mudbox. I saw that Lee suffered the same problem, and I wonder how to solve.

Here, the refered pictures.

https://dl.dropboxusercontent.com/u/10237587/Artes_Web/Forum/Agisoft/Screenshot%20on%207.1.2013%20at%2010.18.12%20AM.png

https://dl.dropboxusercontent.com/u/10237587/Artes_Web/Forum/Agisoft/Screenshot%20on%207.1.2013%20at%2010.19.21%20AM.png

Testing continues. I'm thinking of testing small objects and see the possible results.

Thanks to all!




6
Hello Magnus,

The results are really amazing, even using few cameras, you have done a great job. Comparing the two images you sent is the sharp jump in the quality of the calculation points Photoscan.

The choice of D3200 unlike the canons, the investment was for a better result in the capture of color?

I Think about how to apply it to results of facial scan, capture small pores and skin surfaces. Have you tried using projection and continuous light at the same time? It's a question I have, as spoken by Lee would have to switch the time between catching texture and capture points, correct?

Best Jean Campos

7
Magnus, thank you for sharing your work process.

But I did not understand exactly how noiseprojection contributed to improving the scan. Could you explain?

The results are really exciting.  ;D

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