US 7,321,675 B2 | ||
Image processing apparatus, image processing method, storage medium and program | ||
Hiroyuki Shinbata, Tochigi (Japan) | ||
Assigned to Canon Kabushiki Kaisha, Tokyo (Japan) | ||
Filed on Nov. 12, 2003, as Appl. No. 10/712,554. | ||
Claims priority of application No. 2002-338188 (JP), filed on Nov. 21, 2002. | ||
Prior Publication US 2004/0101187 A1, May 27, 2004 | ||
Int. Cl. G06K 9/00 (2006.01) |
U.S. Cl. 382—128 [382/132; 382/282] | 3 Claims |
1. An image processing apparatus for gradation transformation processing of an abdominal image which includes a spinal region
and a gas region, comprising:
first means for obtaining a processed image by sorting pixels of the abdominal image into an order from pixels having higher
pixel values to pixels having lower pixel values;
second means for calculating a characteristic value from a predetermined region of the processed image; and
gradation transforming means for executing gradation transformation processing of the abdominal image based on the characteristic
value,
wherein the predetermined region is set at a position apart from low-pixel-value-region side of the processed image by a distance
corresponding to the spinal region.
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