Method and system for spill correction
AssigneeAvid Technology, Inc.
InventorsAndreas Soupliotis, Michel Eid, Gilles Khouzam, Thomas P. Nadas
Life of this patent
Estimating the term…
Abstract
A method and system for color correction in composite image. Spill in a foreground image can be keyed directly to produce a spill matte that can be displayed to a user. The user can apply suitable image processing to the spill matte to modify the eventual color correction to the composite image. The resulting spill matte is used as a template for the application of color correction in the composite image.
Claims34
A method for spill correction in a compositing process, comprising:
- generating a spill matte associated with color correction information relating to a foreground object;
- modifying the spill matte;
- displaying the modified spill matte;
- and
- applying the modified spill matte to an alpha channel of a foreground image to control application of the color correction information to the foreground image.
A method for generating a spill matte for a foreground object, comprising:
- examining color values for each pixel in a foreground object;
- determining if a spill color value for each pixel is greater than either of its color values;
- and
- assigning a color correction value to each determined pixel.
A system for keying spill in a foreground image, comprising:
- means for generating a spill matte keyed to a spill color in a foreground image, the spill matte being associated with color correction information;
- means for applying image processing functions to modify the spill matte;
- means for displaying the spill matte after any modification;
- and
- means for applying the spill matte to an alpha channel of the foreground image to control application of the color correction information to the foreground image.
A method for performing spill correction on an image composited from a foreground image and a background image according to a key color, comprising:
- generating a spill matte representing areas of spill of the key color on an object in the foreground image;
- receiving adjustments that modify the spill matte;
- displaying the modified spill matte;
- and
- applying a spill correction operation to the areas of spill designated by the spill matte.
A computer program product, comprising:
- a computer readable medium;
- computer program instructions stored on the computer readable medium that, when executed by a computer, instruct the computer to perform a process for correcting spill in an image composited from a foregoing image and a background image according to a key color, comprising:
- generating a spill matte representing areas of spill of the key color on an object in the foreground image;
- receiving adjustments that modify the spill matte;
- displaying the modified spill matte;
- and
- applying a spill correction operation to the areas of spill designated by the spill matte.
Dependencies are inferred from the claim text.