3D Experiments

This page is under construction.
This page was last updated on 1/29/2020
Experimental SBS views, using tools provided by webs.com, along with Firefox.

Click on photos to enlarge. If the click does not work, refresh the page and try again. Click on "X" (upper right) to exit enlarged view.
Enlarged images can be saved at full resolution.

This works on Firefox, maybe other browsers...
  SBS images may be small enough on page to view directly. If not, then...
  - On enlarged photo, right click in photo to get menu: click on "View Image" to see photo expand to fill browser frame horizontally.
  - Adjust frame to shrink photo for unaided parallel stereo viewing.
  - Browser back arrow to exit expanded view.
These JPEG files (enlarged) are about 1-3 MB each.
See "NOTE" below.
Reversed: click to enlarge,
then view cross-eyed.

JPEG photos for LeTV "4K" 3840w x 2160h pixels 55" screen Passive 3D TV, compatible with RealD 3D glasses. May work with other 3840x2160 pixel passive 3D TVs.
LeTV 3840 x 2160 full screen row interlace for local storage 3D view with USB storage.
NOTE: The original SBS stereo photo Aquar_021.jpg taken 8/2/2013 5:34pm, modified here below, is provided courtesy of David K. Vail.
LeTV 3840 x 2160 full screen row interlace for local storage 3D view with USB storage.
LeTV 3840 x 2160 half-AB format for full screen 3D view using LeTV support for 3D photo viewing from an external source via HDMI connection.
LeTV 3840 x 2160 half-SBS format for full screen 3D view using LeTV support for 3D photo viewing from an external source via HDMI connection.
The following is under construction...
These row interlace photos can be viewed in stereo on both passive screen 3D Letv and 3D Vizio when viewed on these TV screens as Windows desktops set to the max screen resolution: 3840 x 2160 for the 55" Letv, or 1920 x 1080 for the 42" Vizio. (in Settings -> Display -> Scale and Layout, "Change the size of text, apps, and other items" needs to be set to "100%".)

The top photo is 1423 x 800 pixels, and the lower one is 1423 x 799 pixels. Expand and copy the photos to desktop: will appear as icons. Right click on one and open with Photos, Windows Photo Viewer (Windows 10), Paint, or Picasa Photo Viewer. Shrink from full-screen if necessary. Expand window as needed to see full image. In Photos and Windows Photo Viewer, set image to view full-size. Viewed with RealD 3D glasses, you should be able to see image in stereo. If in reverse stereo, drag entire image window slowly upward till stereo appears normal.  

With the viewers listed (except Paint) you should then be able to navigate to the other photo, and see that the size changes by one horizontal line, and otherwise maintains normal stereo view.

In the free Windows application Stereo Photo Maker (SPM), stereo photos can be viewed in the application as windows in row interlace mode, on a passive 3D screen desktop.
Note: Stereo Photo Maker is a free Windows application (32 or 64 bit) that can be downloaded from any of:
- Codepack (https)
- SPM's home page (http)
- makers of SPM and related apps (http)

Experimenting with Stereo Photo Maker (SPM) on  my newly acquired 55" passive screen 3D LeTV last summer, I noticed that my row-interlaced full-screen JPEG file images could be displayed in stereo in SPM's viewing window, and automatically scaled to less than full size in smaller SPM windows[???], still displaying stereo.
To see this happen in SPM, load one of the interlace images, say intl_Aquar_021_1423x800.jpg, into SPM using "Open Stereo Image":
- In the window that appears select "Interlaced" option, and check "Open as Normal Size.
- Navigate to the image, select it and press the "Open" button: It will display a SBS version of the image in its application window.
- In the "Stereo" menu, select "Interlaced->Row Interlaced" to re-display the image as interlaced at its full size.
On the LeTV, the image can be viewed in stereo with RealD 3D glasses for the following (this may also work on other passive screen 3D TVs).
SPM Full size...
Note the "Display Image Size" report in the window's bottom margin shows the image at full size, zoom=100%. Each of the 800 horizontal lines of the image exactly maps to 800 consecutive pixel lines of the screen. Stretching/shrinking the window sideways to resize it may obscure the image but does not stretch/shrink it. Stretching/shrinking/dragging the window vertically to resize/move it does not stretch/shrink the image: if it moves vertically, SPM effectively ensures it moves by 2-row increments to maintain the normal stereo view. 
SPM Fit to window...
Now in the "View" menu, select "Fit to Window". If the window is now resized, the current Display Image Size report in the window's bottom margin shows the current size and zoom factor. As the window is being resized, SPM repeatedly rebuilds the row interlaced form of the image using (my guess: possibly from buffered Left & Right images saved from the Open) the most recent even number of screen rows available in the window, thus displaying the latest row-interlaced image within the resizing window and mapping the image pixel rows to the same number of consecutive screen pixel lines. Again, SPM effectively moves the image by two row increments vertically to maintain normal stereo view if the window is moved vertically.
Recently following up on this observed SPM capability, I built the 1423x800 and 1423x799 pixel row interlace stereo photos just above to see what could be done with a non-stereo-aware image display application such as Windows Photo Viewer.
Windows Photo Viewer example...
For row-interlace images, only full-size stereo viewing is possible with Windows Photo Viewer, if the display window is moved slightly if needed to get a normal view, as described above with the supplied example images. The Viewer window can be horizontally shrunk to cover part of the image without affecting the normal stereo view. But vertically shrinking the Viewer window will cause stereo view loss because the Viewer does not rebuild the row interlace image to match the change in available screen pixel rows, but merely resizes the original interlace image (800 lines of alternating L/R image data in the example) across the smaller number (say 750 lines) of available screen L/R polarized pixel rows. The effect is barely noticeable without 3D glasses, but will show up as about 50 horizontal alternating bands of normal/reverse not-so-stereo viewing with the glasses.

This LeTV screen camera photo shows a 1423w x 800h row interlaced JPG file being displayed on the Windows 10 desktop at 3840x2160 resolution, with System Display Apps Size set to 100%. Initially the file was opened and displayed full size in Windows Photo Viewer and SPM (both viewers in windowed mode). Both images showed normal stereo with RealD 3D glasses. Then each window was shrunk vertically to about 752h. When viewed with 3D glasses, SPM continued to display stereo, but Windows Photo Viewer showed about 50 alternating bands as described above. This photo was taken with the Left 3D glasses lens in front of the camera lens, thus making visible the bands in the Windows Photo Viewer window; the SPM window shows the Left stereo part of the row-interlaced image as expected. The bands reflect the swapping back and forth of the left and right interlaced images along the height of the Windows Photo Viewer display.