3D Vision Blog

A normal user's look into the world of 3D Stereo Technologies

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Free Online Stereo 3D MPO to JPS Photo Converter Tool

March 23rd, 2012 · 1 Comment · Other S3D Tech

There are already quite a few free and commercial applications that would allow you to convert 3D photos from the MPO format to something more common and usable such as a 2D view of the photo (left frame) or a JPEG stereo pair in a Side by Side configuration. Sometimes however you may not have any of these handy and you might need to get a 2D frame or a JPS version of a 3D photo taken in MPO format and something else might help you do the job. There is a free online tool that allows you to convert a MPO 3D photo into a separate Left and Right frames as well as to make a JPS Side by Side stereo pair of the 3D photo. The website works quite well, although it may have some trouble with larger MPO files and sometimes the JPS photo turns out to be completely blank, instead of what it should contain. Other than that it does a pretty good job most of the time.

To try out the free online stereoscopic 3D MPO to JPS photo converter tool…

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CMSoft Stereoscopic 3D Picture Converter and Simple 3D Photo Editor

February 14th, 2012 · No Comments · Other S3D Tech

CMSoft Stereoscopic Editor is an interesting free piece of software with a simple and easy to use interface that allows you to easily convert .MPO files to .JPS and as separate left/right stereo pairs, as well as doing some quick and simple adjustments to stereoscopic 3D photos. This editor has been developed for use on non-stereo 3D-capable displays and thus it only supports cross-eye and wiggle viewing methods for the 3D photo preview. You can also adjust parallax manually, although there is also an auto adjustment function that may not always provide the best results and there is the capability to use some basic filters such as Gaussian Blur for example with the ability to even create your own custom filters for the application if you are good with OpenCL programming.

CMSoft Stereoscopic Editor can open .MPO files from a 3D-capsble camera and import separate left and right views taken with dual camera setups and can directly and easily export them into single file .JPS stereo pairs or save them in separate .JPG left and right files. It also supports batch conversion of .MPO files, so no need to individually convert the files one by one, just have in mind that the Convert to MPO menu does not work with the currently opened file, but requires you to select the file or files you cant converted. I’ve had a bit of trouble with loading the OpenCL filters that are provided with the software, but other than that the program worked quite well, so it might turn out to be a handy tool for some of you. Of course it is not as powerful and as feature rich as the StereoPhoto Maker, but can be handy for some quick edits.

Here you can download the free CMSoft Stereoscopic Editor software…

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How to Get Better Quality Stereoscopic 3D Screenshots with 3D Vision

May 26th, 2010 · 2 Comments · GeForce 3D Vision

I’m sure that a lot of you that do save stereoscopic 3D screenshots from games they play are not very happy with the level of quality they get in the saved JPS files (JPEGs in Side by Side format). The reason for that is the fact that Nvidia set the default level of quality to 50%, probably in order to have smaller files, but I’m sure that for 99% of the people it is the quality that matters more than the file size, right? Anyway, the good news is that the level of quality can be adjusted from within the Registry, so you can increase it if you wish to and let me tell you how this can be easily done. You need to run Regedit and navigate to the following place in the registry depending on your OS and then just change the value of SnapShotQuality to the desired level of quality.

For 32-bit Windows:

For 64-bit Windows:
[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\NVIDIA Corporation\Global\Stereo3D]

The value is represented in percents in decimal numbers, so when you change it you need to enter decimal and not HEX values (HEX is still Ok if you input the right value, because 50 in HEX is equal to the number 80 in decimal!). So the default value you’ll see is 50 in decimal meaning 50 percent quality which gives a smaller file, but a lot of visual artifacts due to the compression of the image, so you definitely need to increase that value. Have in mind that 99 is the maximum value you need to enter in order to get the highest quality level, if you input 100 or more you’ll actually get 75 as a quality level instead, so be careful that you input 99 in decimal as maximum number to get the highest possible quality!

I did some comparisons of screenshots done in stereo 3D with different quality levels in order to see the difference in file size and also to check a few important things and verify some of the limitations that you may face when using the built-in stereo screenshot capture functionality in the 3D Vision driver invoked by presing the ALT + F1 key combination. As you can see in the image above with quality level 1 you get a really small file, but the quality is so bad that it is practically useless, at the default quality level of 50 you still get quite small file, with a decent quality, but not good enough as there are quite a lot of visual artifacts due to the compression. I’ve found out that the default setting for good ratio between quality and file size should actually be set to around 80 as then you have very little and hard to see compression artifacts and the file size is still quite small. This is probably the best option if you want to directly share the stereo 3D screenshots you make with other people over the internet without having to edit them in any way. If you don’t care about the file size you can directly go to 99 (the maximum quality level) to get the best visual quality, although with over 3 times the file size of the screenshots at quality level of 80, but then again you can edit these and compress them if needed later on to share online.

I would also want to direct your attention to the naming convention of the screenshots that get saved under your User account in the Documents folder in a specially named NVStereoscopic3D.IMG folder. For the example above I’ve used the built-in stereo 3D test application in the 3D Vision driver and the name of the file is as follows: nvsttest01_50.jps. The first part of the file name “nvsttest” represent the executable name of the application you took the screenshot in, after that comes the number 01 that represents the number of the screenshot from that application, then a separator “_” and the number 50 which is the quality level of the screenshot. I’m directing your attention to this naming convention as it is directly related to some limitations you’ll be facing when taking screenshots due to the fact that both numbers are fixed at only two digits. This means that you can save up to 99 stereo 3D screenshots form a certain application, then you need to move the screenshots from the default folder for the software to start from 01 again, otherwise if you leave them you just won’t get any more screenshots saved! The same also applies to the quality level and that is the reason why you cannot set 100 as a quality level for example and the 99 is the maximum number you can set for optimum quality.

So it seems that Nvidia can work a bit more in adjusting these settings to better values, like 80 as the default quality level for example and allowing you to save more than 99 screenshots per application…

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