Box is the biggest of them (by volume) and diamond the smallest. NOTE: HCI is slow, because it has to calculate atan2() and hypot() for each pixel.ĭetermines the shape of the color subspace. If you supply it with a truly 4:4:4 video, it will produce perfectly sharp alpha from both color spaces. NOTE: chroma subsampling is not a fault of this plugin. It suffers from chroma subsampling, and will give less sharp results than RGB. HCI is separated luma/chroma (a cylindrical “Hue Chromacity Intensity”) space. Specifies in which of the two color spaces ( RGB, HCI) the delta controls will work. For example, setting a high I delta (in HCI), will allow the selection of a specific color in both light and shadows, but will also discard most of the high-bandwidth luma signal, making the selection less spatially accurate. Bigger value means bigger tolerance on that axis. These three parameters determine the size of the color subspace along each axis. This is the center point of the selected color subspace. The various parameters (obtained from the source code and modified to correspond to Shotcut’s terminology) are: Operation: Overwrite (or Minimum, which is usful if you have other filters applied that modify alpha) In general I find the following to work best in most cases: As you can see it has quite a few parameters. The Chroma Key Advanced filter is a frontend for the “frei0r Select0r” filter. If you also master the Chromakey: Advanced filter, I’d really like to see a tutorial on that one.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |