| US 7,502,528 B2 | ||
| Image matching apparatus, method of matching images, and computer program product | ||
| Nao Mishima, Kanagawa (Japan); Go Ito, Tokyo (Japan); and Masahiro Baba, Kanagawa (Japan) | ||
| Assigned to Kabushiki Kaisha Toshiba, Tokyo (Japan) | ||
| Filed on Sep. 12, 2005, as Appl. No. 11/223,050. | ||
| Claims priority of application No. 2004-285241 (JP), filed on Sep. 29, 2004. | ||
| Prior Publication US 2006/0078206 A1, Apr. 13, 2006 | ||
| Int. Cl. G06K 9/32 (2006.01) | ||
| U.S. Cl. 382—294 [382/107; 382/219] | 14 Claims |
| 1. An image matching apparatus comprising:
a central processing unit that executes a numerical analyzing unit and a mapping unit, wherein:
the numerical analyzing unit solves an equation of motion numerically, the equation of motion including a potential energy
force applied on each of lattice points each corresponding to a source pixel at a source position of each of the lattice points
on a source image, the numerical analyzing unit including a potential energy force calculator that calculates the potential
energy force for each of the lattice points based on a pixel value gradient between the source pixel and pixels in region
corresponding to the current position on the destination image; and
the mapping unit sets the source position and a convergence value of the current position as a mapping relation between the
source image and the destination image.
|