US 7,499,572 B2
Surface segmentation from luminance and color differences
Ione Fine, Del Mar, Calif. (US); and Geoffrey M. Boynton, Del Mar, Calif. (US)
Assigned to The Salk Institute for Biological Studies, La Jolla, Calif. (US)
Filed on Jun. 29, 2004, as Appl. No. 10/881,966.
Claims priority of provisional application 60/484155, filed on Jun. 30, 2003.
Prior Publication US 2005/0058351 A1, Mar. 17, 2005
Int. Cl. G06K 9/00 (2006.01); G09G 5/00 (2006.01)
U.S. Cl. 382—106  [382/164; 345/604] 28 Claims
OG exemplary drawing
 
1. A method for determining if a first pixel and a second pixel belong to a same surface, the method comprising:
determining a spatial-difference value for the first pixel and the second pixel, wherein determining the spatial-difference value includes measuring degrees of visual angle between the first pixel and the second pixel;
determining one or more vision-difference values for the first pixel and the second pixel;
determining, from the spatial-difference value, an initial same-surface probability value for if the first pixel and the second pixel belong to the same surface;
determining, from the one or more vision-difference values, a first vision-difference probability value for if the first pixel and the second pixel belong to the same surface;
determining, from the spatial-difference value and the one or more vision-difference values, a second vision-difference probability value;
determining, from the initial same-surface probability value, the first vision-difference probability value and the second vision-difference probability value, an improved same-surface probability value for if the first pixel and the second pixel belong to the same surface.