With the mosaic file, we only need to filter and transform the image once. If we edited each file seperately, we would have to go through the same filters and transformations for each file. The real benefit arises when we need to apply the filters and transformations. This allows us to draw in the blades, something you need to do for each frame anyway, in one image file. This file is a mosaic of all the original video frames, with a black border between each image. The big timesaver with my script is the creation of the mosaic image file. You might want to go read that before reading the rest of this page, to get familiar with the overall process. The guide that I follow, that I found a long time ago, is written by Darel Finley, and is hosted at. The longest and most tedious part of the rotoscoping process, besides identifying the blades and drawing them in each frame, is the series of image-editor transformations you need to apply to get the characteristic glow. It's fairly tedious, to draw in the lightsaber blades every frame, but I have created a pair of Python scripts to help improve this process. This is how they did the lightsaber effects in the original Star Wars movies. The term Rotoscoping means editing a video clip frame by frame, and tracing or applying some other effect to each frame in turn. Wooden dowels (0.5" diameter) were used in these videos, and are recommended for pretend fighting, as they will certainly break before your skull does, if you accidentally get hit. It involves recording a video of your friends pretending to have a lightsaber fight, using some sort of lightsaber prop, and then editing the individual frames to add the lightsaber glow. Lightsaber rotoscoping is a neat little hobby I picked up sometime near the end of high school.
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