Digital Film Tools Power Matte 2.1v3
DigitalFilmToolsPowerMatte2.1v3|16.3MB
PowerMatteisaneasytouseinteractiveimagemattingtoolcapableofextractingalmostanyobjectinanimage–evenifyouaredealingwithfinehairdetail,smoke,orreflections.Thisextractionprocesscreateswhatisknownasamatte–essentiallyablackandwhitecutout.Whitematteareasareextracted,blackareasnot,andgrayareasinbetweenrepresentaleveloftransparency.Onceamatteisextracted,theforegroundobjectcanbeseamlesslycomposedontoanewbackgroundaswellasapplyfilterandimagecorrectionsonlywithintheareadefinedbythematte.

Toworkthismagic,PowerMatteiterativelyestimatesthetransparencyvalueforeverypixelintheimage,basedonasmallsampleofforeground(whatyouwanttocutout)andbackground(whatyouwanttogetridof)pixelsmarkedbydefiningsimplemasksontheimage.Resultsshowthatcomparedwithpreviousapproaches,ourmethodismoreefficientandrequiresminimalefforttoextracthighqualitymattesforforegroundswithsignificantsemitransparentregions.Inaddition,theforegroundedgecolorscanbeestimatedinthesemitransparentareastocreateaseamlesscomposite.

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