Power Matte is an easy to use interactive image matting
tool capable of extracting almost any object in an image--even if you are
dealing with fine hair detail, smoke, or reflections. This extraction
process creates what is known as a matte--essentially a black and white
cutout. White matte areas are extracted, black areas not, and gray areas
in between represent a level of transparency. Once a matte is extracted,
the foreground object can be seamlessly composed onto a new background as
well as apply filter and image corrections only within the area defined by
the matte.
|
Before
|
After
|
|
|
|
Matte
|
Masks
|
|
|
|
Click any image above for larger view
To work this magic, Power Matte iteratively estimates the
transparency value for every pixel in the image, based on a
small sample of foreground (what you want to cut out) and
background (what you want to get rid of) pixels marked by
defining simple masks on the image. Results show that compared
with previous approaches, our method is more efficient and
requires minimal effort to extract high quality mattes for
foregrounds with significant semitransparent regions. In
addition, the foreground edge colors can be estimated in the
semitransparent areas to create a seamless composite.
|
|
|
|
