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maskMasking techniques for greenscreen Hi All, Can someone suggest the best way to mask out a green screen? I've tried using the NI mask from colour patch along with a blur but I'm still getting some green pixels. Is it possible to write a core image filter that measure the distance between colors and uses that to compute the alpha? if so does anyone know the distance function? Cheers James
Mask to Existing image Hi, I often want to add an alpha channel to an image in QC. Is there some kind of good reason why there is not a patch like this: INPUTS: Image, Mask OUTPUTS: Image (with alpha channel defined by the mask input) It seems odd to me that i cannot do this very simple.... best, soren
Human mappingHi all. I like to make something but i don't know how. i like to make "human mapping", with sensors in the musician's bodys, making "moving masks", maybe in quartz composer? with what sensors? its possible? maybe with motion detection? how a can make a movable mask in QC? thanks! marcos vimeo.com/prack
Eraserhead (Composition by gtoledo3)
This is a composition that uses sample and hold, with blend with mask mode, to create an effect that lets you "erase" between a snapshot from the video cam, and the current feed. Another image source could be used in lieu of the sample and hold video shot. Tweak the interpolation duration to change the snapshot delay. The initial idea, for me, was to take a snapshot while out of the view of the cam, walk into the cam feed, and then "erase" over parts of my body! An older composition... |