[photo-3d] Re: some depth charge info.

["David Samuel" <dpsamu@xxxxxxxxx>]

> > Also if the image is higher than 600 pixels, depth charge
> > shrinks the image to fit the screen causing distortion
> > (foggyness). 
> 
> This could be due to your display settings, i.e. display resolution 
> and color depth. In the DC Viewer, under Preferences > More 
> Preferences, there should be an "Always Stretch Image To 
> Maximum Size" toggle, which you can turn on or off. Imo, 
> having it "on" is very convenient.

My display resolution is set to current display resolution. Which is 800x600 16 million SVGA. Always Stretch Image To 
Maximum Size is on 

> I'm not sure what you mean by "foggyness", but this automatic 
> stretching to fit the maximum screen size usually works very 
> well for me. Depending on the color depth of your display (i.e. 
> how many colors your system is set up to handle), there may 
> be "dithering" going on that could degrade the appearance of 
> the image, depending on the source image file.


 
> Otoh, I've noticed retinally rivalrous artifacts in some (of my) 
> stereo files, when the jpeg quality setting was set too low. The 
> fineness of these unwanted artifacts seems to depend on the 
> magnification of the image (which depends on both the pixel 
> dimensions of the image file and the monitor's display 
> properties).



> With the 1.2 version of the viewer (and plug-in), the Tab key 
> toggles the display of information concerning the 
> magnification, viewing method, and display properties. The + 
> and - (plus and minus) keys can also be used to zoom in and 
> out, in steps. HTH.

The way I solve the problem:

For example an image 800 wide x 900 high. 
I will trim the lower 300 pixels off and copy the image to jpeg at minimum compression level of 100. I go back to the original image and undo the trim off of the lower and slide the whole image up the difiference. In this case 300 pixels. I now trim the lower 300 pixels and jpeg that.

I now have two images, one of the upper part of the original and one with the lower part. 

I then open the upper part with depth Charge,  print screen and paste it to my editor. Then do the same thing to the lower. I then resize the upper image to 900 pixels and copy and paste the lower part into it. 

In depth charge I also use the arow keys to get the central obbject of the image to be even with the plane of the view window. If I am doing an upper and a lower I make sure I count how many key presses I do on the upper so I can do the same number on the lower.

I get pretty good results this way with very little ghosting of the central object and having very little fogging ( retinally rivalrous artifacts)  due to left right image varience caused by depth charge shrinking.

SAMU


 

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