results of a new technique for 2D-to-3D conversion

tony brown wrote:

uuglypher wrote:

tony brown wrote:

uuglypher wrote:

tony brown wrote:

uuglypher wrote:

In case y’hadn’t noticed, these are for parallel gaze!--
uuglypher
"100% of the shots you don't take don't go in!"
Wayne Gretzky

Very strangely, I see them better as Xeyed than parallel !

Although elderly and no expert, I make, watch and see many, many 3D images and have no difficulty seeing depth with Anglyphs, Side by Sides and Xeyeds but these leave me unsure and look more 3D to me viewed as Xeyed.

Have you tried viewing them as such? Strange effect, but to me they look flatter Side by Side.

Hi, Tony,

Thanks for your comments. It’s not unusual that some viewers of these 2D-to-3D conversions get better results by crossed gaze technique. I’m glad that you mentioned you are elderly. The study I mentioned on the relationship between aging and binocular depth perception in over 400 people 65 years of age or older did find that 27% had normal (or better) binocular depth perception. Looks like you and I (at 81) have found ourselves in that lucky percentile!

best regards,

Dave

As a test, I submit 4 (Tri-shot) stereos in both Side x Side and Xeye formats. There should be no ambiguity as to which is the correct pair appropriate to your viewing arrangement. The tri-shot element is mostly very small. As W.S.Gilbert put it: " ... merely to add artistic verisimilitude to an otherwise bald and unconvincing narrative."

Tri-shot is just a handy name for what I am experimenting with at the moment and involves taking a conventional stereo pair with lens separation of the order of 65mm to 100mm followed by a single extra shot of about 0,5metres to 3 metres to one side as in hyperstereo Cha Cha shooting. The three images are mounted as layers in Photoshop or similar editing software and the two images from the same side are masked to allow both the normal foreground to be seen, along with the far-spaced background. Thus providing a 'deep stereo' effect.

Alternately, a hyperstereo photo can, by this Tri-shot technique, include a conventional foreground which it otherwise can't, the two foreground images being far too far apart on the resulting picture for the eyes to reconcile together.

In the cemetery scene, I have to say that there IS a 400 metre gap between the rear headstones and the distant tree line. That gap is meant to be seen and there will be no further stereo separation among those distant trees. I don't know about scalene transformation at all so I can't comment?

Why would you want to involve pincushion distortion? I don't see any benefit without a special viewer.

Thanks, Tony, for your explanation of “tri-shot”; it’s a novel and obviously a successful approach!

I used your left eye view as the base image for my 3D conversions. A variety of scalene geometric transformations and paraxial centripetal ( pincushion) distortions can be  applied to copies of the base image or use as the right eye image. The former are used in the case when the perspective vanishing point is beyond the edges of the image; the latter is used to accentuate a vanishing point within the image.

There are, clearly, differences of opinion on the significance of discernible depths in the distant regions of the image! Chacun a son goût!

Best t’ye!

Dave--
uuglypher
"100% of the shots you don't take don't go in!"
Wayne Gretzky