Methods for defining mask of substantially color-homogeneous reg

Details Methods for defining mask of substantially color-homogeneous reg Methods for defining mask of substantially color-homogeneous reg

1995-10-27

1999-06-15

Kelley, Christopher S.

Image analysis

Image transformation or preprocessing

Selecting a portion of an image

382162, G06K 900

Patent

active

059129948

ABSTRACT:
Edge detection or region definition technology in picture colorization masks objects of a frame by identifying pixels in the frame which fall within a determined range of luminance values. A seed point is selected within an object to be masked, and a test area is generated around the seed point. The test area may be any arbitrary shape or size. A range of luminance values of the pixels in the test area is generated, with the boundary values of the range representing the pixels having the highest and lowest luminance values. Pixels within the object to be masked which have luminance values falling within the range are identified and highlighted. The boundary values of the range may then be adjusted depending upon the satisfaction of the colorist. A mask is then defined to comprise the identified and highlighted pixels.

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