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You have it as "Shadow Catcher" you need to select the object and go to Object properties > Visibility > Shadow Catcher (uncheck this one)


Specific answer for the task at hand (image segmentation) is given by the bpycv module. This isn't the same as a general compositor -> bpy solution, but posting here in case someone else also happens to (somehow) miss bpycv, yet find this post.


Sure, that's the whole point of shading, you create noise patterns and then use them to guide blend or strength input parameters. Here a example: Separating Uv coordinates makes a gradient in the chosen direction, add centeri it in the plane and then mix it with a noise on linear light mode. Then use that to guide any blend or parameter. 1 of the millions ...


When you use the tools without understanding what they do, you can't have any control over the result. If you are learning blender you you will get more satisfaction if learn what each element is doing, before you break the rules and use them for other purposes... You are using vector curves to control RGB information. Usually you shouldn't plug information ...


In the video clip editor you can create masks and animate them with keyframes. For precise rotoscoping over video, load the video element on the Video Clip editor, create a new mask and you can animate the shape and feathering as you like. Overlaying an image to cover a face in a video? You can also use trackers and parent the points of the mask with the ...


Generally, you would combine the 2 images using a mix shader, and use the mask image as the mix factor. See Below:

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