Overlay filter

From Stereomerger

The overlay filter can be used for a multiple of things. It uses green-screen technique (also known as chroma key) to melt two images together.

You can superimpose one image in the blue sky of another, use it to put in a small logo on your stereo photos or simply create a nice frame, as the example below shows.

Contents 1 Settings 1.1 Overlay image 1.2 Apply to 1.3 Size/Fit 1.4 Chroma key and tolerance 2 Baroque frame example

Settings

Overlay image

This is the path to the overlay image you want to use. If the image can't be found, Stereomerger just skips this filter with no warning.

Apply to

Here you decides where you want to apply the the overlay image.

• Whole image - The overlay is stretched over both left and right side.
• Both sides - The overlay is put once over the left side and once over the right sides.
• Left - The overlay is put only over the left side.
• Right - The overlay is put only over the right side.

Size/Fit

The size/fit setting let you choose how the overlay should be sized and fitted to the stereo image.

• Fit - Scales the overlay to the exact size of the stereo image.
• Fit width - Scales the overlay to fit the stereo image's width.
  • The vertical position slider let you position the overlay
• Fit height - Scales the overlay to fit the stereo image's height.
  • The horizontal position slider let you position the overlay
• Scale (result) - Scales the overlay with respect to the resulting image's size
  • The position sliders let you position the overlay
  • The width and height sliders let you scale the overlay in percent of the resulting image's size
• Scale (overlay) - Scales the overlay with respect to its own size
  • The position sliders let you position the overlay
  • The width and height sliders let you scale the overlay in percent of its own size
• Keep aspect - Makes sure the width and height keeps the same aspect ratio

Chroma key and tolerance

Chroma key is the colour that will be replaced, and tolerance specifies how close the colours will have to be in order to be replaced.

Baroque frame example

The overlay example script uses an image of a the baroque frame, the one you see here, to add a little livelier frame than what the standard frame filter can provide.

Download the script, and the full version of the frame you see here, and edit the script so that it can find the frame. In this example, it is the strong green colour where the stereo photo itself will be drawn.

You can of course use this script as a springboard and create your own frames. Just adapt the underlying passepartout so that the passepartout is invisible and most of the stereo image is shown inside the frame.