It automatically gives you a matte that is portable onto other shots.” Where machine learning fits inįor a number of years, Autodesk has been developing different solutions for image segmentation or isolation with things like depth tools and face normals. This new tool has the intelligence to understand where the face is and the angle of the face on every frame. “That’s OK, of course, but the problem is if you then change your mind because, say, all those masks might be for the left side of the face and they’re tracked to a specific shot. “You’d normally have to hand-build the shapes and use masks and keys,” says Harris.
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It’s basically like lighting VFX at the speed of color grading.” Where this differs from what artists would need to do currently to isolate parts of the face is in removing a lot of the manual process. “In terms of color grading,” suggests Harris, “it will be a huge help for being able to say, ‘I’ve got this face where the person’s got bags under their eyes in every shot’ or ‘I just wish they had more definition or more shadow on one side of their face.’ The artist can now get a formula going on one shot and then drag and drop that onto another shot and it does the same exact thing. Where Autodesk believes artists will be able to use the Human Face Part Extraction Keyer is in two major areas beauty work and in color grading. “There’s also,” says Harris, “a custom UV layout tool where you can draw on a static template the area of concern, say a laugh line or a mole, and then it uses the whole face track to give you a matte for the mole or matte for the laugh line.” In the keyer, there’s a drop-down list of the things it can detect automatically. The Human Face Part Extraction Keyer lets you isolate specific face parts – features like the cheeks, chin, forehead, nose, t-zone – and give you a matte for them. Including a GPU-accelerated defocus effect, finishing enhancements, and new workflows for Dolby Vision HDR authoring and display. He also outlines some of the other new features in Flame 2021. He runs down how the Keyer came about, what machine learning ‘training’ was involved to make it possible. We go behind the scenes of the new toolset with Flame family product manager Will Harris. The idea is to save time in compositing involving faces and in doing cosmetic beauty work. This enables feature isolation in order to extract alpha mattes for things like skin, eyes, lips, nose, cheeks, chin, and laugh lines. It’s all via the Human Face Part Extraction Keyer. It used for color grading, lighting VFX, and compositing. In the just-released Flame 2021 update, this has been extended to specific features for isolating human bodies and faces. Flame has taken advantage of machine learning, especially for object isolation, sky extraction, and rotoscoping. Recent developments by Autodesk in its compositing, color grading, and finishing tool. Under the hood of the semantic keyer in Autodesk’s Flame 2021