This shader will undistort and redistort footage according to the Syntheyes model. It's called SyLens after it's more powerful cousin, SyLens for Nuke.
Download and unpack the repository, then open a Terminal and cd into the directory where you have unpacked it. From there, run the installer shell script:
$ ./installer.sh
Since the matchbox directories are protected from non-admin users by default, copying will be done as sudo - so either run the installer as root or be ready to enter your password. On the Mac, your main user will be a sudoer by default. On Linux, your Flame/Smoke user will likely NOT be a sudoer so you will have to run the installer as root.
The installer script will copy the shader into all of the versions of the software that support Matchbox shaders. Once you grab a fresh Matchbox node the SyLens shader icon will show up in your Matchbox shaders list.
You will need to rerun the installer everytime you install an update for your IFFS applications (since every new install
creates a new matchbox directory)
SyLens deals with anamorphic plates correctly if you correctly configure the pixel aspect ratio in your node output / clip metadata.
When you are undistorting images it sometimes produces oversize images. By default the overflow pixels will be simply cropped away, however if you expand the Canvas Resolution of your shader, you will see that the output will still be centered in your canvas. So, to recover the overflow pixels, expand your output until all the pixels are covered.
Remember that the undistorted plate will always have the same aspect ratio as the original.
Same procedure as when removing distortion. Adjust your output size until you are happy with the result, or set the output to your original plate pixel dimensions.
Do not worry about always using the latest version of the shader - the shader you use will actually be copied to your setup so there is no problem versioning it.
Copyright (c) 2020 Julik Tarkhanov
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