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3D Lenticular Print from Stereo Image

Started Jan 28, 2020 | Discussions
SeanU
SeanU Senior Member • Posts: 2,210
3D Lenticular Print from Stereo Image

Hi everyone,

I recently purchased some 60lpi 3D (non flip) 5x7 sheets to make some test prints from my Fuji W3. I am using Stereo Photo Maker to create the interlaced image, and I am trying to understand a few things.

1) I am printing at 720dpi on an epson printer. At this resolution, I have 12 pixels under each lens on the 60 lpi sheet.

2) For a 2 image lenticular there are 6 pixels from the left image and 6 pixels from the right image... this looks ok.

3) I did a pitch test as defined here : http://www.vicgi.com/blog/2012/12/12/lenticular-pitch-test-using-photoshop/ . My test image used alternating 6 pixels of black and six pixels of white... all looked good at 100%.

I was able to create one image that has a subtle 3d effect, which is much stronger when viewed with other methods. The lenticular print has a 3d effect, but it is harder to see than I expected.

I experimented with the trial of Triaxes, and the output was more "interesting" than just 2 images. The problem is the depth maps are very poor, and I don't really have the time and skills to fix them. I tried a few other methods of creating depth maps, and they all had major issues with my test photos.

Do any of the experts here have any suggestions for getting better effect from a stereo pair? This is just for my own personal use, and I'm not looking to invest anything over $100 for software.

Thanks! - Sean

 SeanU's gear list:SeanU's gear list
Fujifilm FinePix Real 3D W3 Sigma DP3 Merrill Fujifilm X100V Nikon D800 Panasonic Lumix DMC-GX85
threed123
threed123 Senior Member • Posts: 1,490
Re: 3D Lenticular Print from Stereo Image

I remember doing this years ago. Problem is that you can't get enough Left/Right eye separation doing this with vertical lenticular sheets using Stereomaker unless you fiddle with the depth separation of the images.

Try this:

1 Load your W3 MPO into stereomaker.

2 Click on Stereo

3 Click on Color Anaglyph then Red/Cyan Anaglyph (get out your 3D glasses ;o).

4 Click on Adjust then Easy Adjustment (up pops window to adjust depth)

5 At top of image, drag the H to the right to create more depth or left to create more pop-out. Then select OK to close the window

6 Click on Stereo then Interlaced, then Column Interlaced.

7 Save Stereo Image and print (not sure how to do this with the right pixel size and count--needs experimentation).

You should now have more separation and more depth. You might have more crosstalk too, though.

I don't have any lenticular sheets laying around to test this, but good luck and let me know if this works better.

SeanU
OP SeanU Senior Member • Posts: 2,210
Re: 3D Lenticular Print from Stereo Image
1

Thanks threed123!  I'll try this out. I was actually trying to do the exact opposite, trying to get perfect alignment, like i would for using an optical side by side viewer. I'll give it a shot and post my experience. - Sean

 SeanU's gear list:SeanU's gear list
Fujifilm FinePix Real 3D W3 Sigma DP3 Merrill Fujifilm X100V Nikon D800 Panasonic Lumix DMC-GX85
Oleg L K Regular Member • Posts: 293
Re: 3D Lenticular Print from Stereo Image

Hi Sean, I think I can help you, but it takes some effort on my side.

We are preparing to start a small business in the field of amateur stereo photography and I anyway will share some knowledge on the web. Though it will take  a year or so, and today I don't have ready-to-publish docs.

If you promise to be serious about it, I arrange an average-length post with the main guidelines. E.g. if I spend my time, you should invest yours, and don't give up until you get your results :). So, would you?

I'm not joking - despite the smiley :).

Regards,

Oleg Kosyakovsky.

3D Gunner Senior Member • Posts: 1,031
Re: 3D Lenticular Print from Stereo Image

3D Lenticular prints from just pairs of stereo images will not give you satisfactory results.

For good lenticular prints you will need at least 8 separate images. I usually use 16 separate images taken from 16 different points.

There are also dedicated software which can generate additional images from a stereo pair. It's a long story about all of this.

Also, Fuji W3 have a very small inter-axial distance not suited for this task (lenticular prints), except for some close distance subjects.

SeanU
OP SeanU Senior Member • Posts: 2,210
Re: 3D Lenticular Print from Stereo Image

I have made a few prints so far and here are my initial impressions :

  • Bright Backgrounds make for lots of ghosting... avoid bright sky, clouds, etc
  • I'm not sure if it has to do with aligning the lens with the image, or just the way the lenses work, but the best auto-stereoscopic 3d effect always seems to come when viewing the final images from off angle... straight on viewing where I would prefer the effect, seems to not work.
  • One image I printed from the La Brea Tar Pits, of a skull in the mud has the best 3d effect overall... it is very monotone brown tone, and the depth of the image from front to back is probably just a few feet.
  • The photos that seem to work best seem to be when subject is in foreground, and background is a flat plane ( a wall etc). Busy images with objects with large 3d separation in the background (IE. people,trees etc) tend to show too much ghosting. 

It's been an interesting experiment, and I have a better handle on what type of images will work from the W3-3D so it will save time avoiding images that are too "Busy"

If I could easily create super accurate depth maps from a stereo pairs, I would try with other types of images... not really looking for a new camera rig or solution at this point.

Thanks to everyone that offered comments and input! - Sean

 SeanU's gear list:SeanU's gear list
Fujifilm FinePix Real 3D W3 Sigma DP3 Merrill Fujifilm X100V Nikon D800 Panasonic Lumix DMC-GX85
threed123
threed123 Senior Member • Posts: 1,490
Re: 3D Lenticular Print from Stereo Image

Part of the problem is probably the slight anomaly of lens correction between Left and Right Eye lenses of any camera. Make sure you do a corrective alignment of the images before printing, using Stereomaker. Ghosting is probably due to this misalignment. Closer objects are probably better aligned because they are larger and easier for the software to align them.

3D Gunner Senior Member • Posts: 1,031
Re: 3D Lenticular Print from Stereo Image

A lenticular print can be considered to be good only when "straight on viewing" is without problems and the contrast of subject doesn't matter.

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