Image processing apparatus, image processing method, and computer-readable recording medium
First Claim
1. An image processing apparatus that detects an abnormal part from an intraluminal image, the apparatus comprising:
- a processor; and
a memory storing computer-readable instructions that, when executed by the processor, implement;
a gradient information calculating unit that calculates gradient information of each of pixels, based on pixel values of the intraluminal image;
a closed region creating unit that, based on the gradient information, creates a closed region so that the closed region has a boundary with pixels with positions satisfying a condition where the closed region does not include, on an inside thereof, any pixel of which a gradient strength is equal to or higher than a predetermined value, and also, a boundary of the closed region does not curve toward an interior of the closed region, with a curvature equal to or larger than a predetermined value; and
an abnormal part detecting unit that detects the abnormal part from the inside of the closed region.
2 Assignments
0 Petitions
Accused Products
Abstract
An image processing apparatus includes: a gradient information calculating unit that calculates gradient information of each of pixels, based on pixel values of an intraluminal image; a closed region creating unit that, based on the gradient information, creates a closed region satisfying a condition where the closed region does not include, on the inside thereof, any pixel of which the gradient strength is equal to or higher than a predetermined value, and also, the boundary of the closed region does not curve toward the interior of the closed region, with a curvature equal to or larger than a predetermined value; and an abnormal part detecting unit that detects an abnormal part from the inside of the closed region.
55 Citations
16 Claims
-
1. An image processing apparatus that detects an abnormal part from an intraluminal image, the apparatus comprising:
-
a processor; and a memory storing computer-readable instructions that, when executed by the processor, implement; a gradient information calculating unit that calculates gradient information of each of pixels, based on pixel values of the intraluminal image; a closed region creating unit that, based on the gradient information, creates a closed region so that the closed region has a boundary with pixels with positions satisfying a condition where the closed region does not include, on an inside thereof, any pixel of which a gradient strength is equal to or higher than a predetermined value, and also, a boundary of the closed region does not curve toward an interior of the closed region, with a curvature equal to or larger than a predetermined value; and an abnormal part detecting unit that detects the abnormal part from the inside of the closed region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. An image processing method for detecting an abnormal part from an intraluminal image, the method comprising:
-
calculating gradient information of each of pixels, based on pixel values of the intraluminal image; creating, based on the gradient information, a closed region so that the closed region has a boundary with pixels with positions satisfying a condition where the closed region does not include, on an inside thereof, any pixel of which a gradient strength is equal to or higher than a predetermined value, and also, a boundary of the closed region does not curve toward an interior of the closed region with a curvature equal to or larger than a predetermined value; and detecting the abnormal part from the inside of the closed region.
-
-
15. A non-transitory computer-readable recording medium with an executable program stored thereon, wherein the program instructs a processor to perform:
-
calculating gradient information of each of pixels, based on pixel values of the intraluminal image; creating, based on the gradient information, a closed region so that the closed region has a boundary with pixels with positions satisfying a condition where the closed region does not include, on an inside thereof, any pixel of which a gradient strength is equal to or higher than a predetermined value, and also, a boundary of the closed region does not curve toward an interior of the closed region with a curvature equal to or larger than a predetermined value; and detecting the abnormal part from the inside of the closed region.
-
-
16. An image processing apparatus that detects an abnormal part from an intraluminal image, the apparatus comprising:
-
a gradient information calculating unit that calculates gradient information of each of pixels, based on pixel values of the intraluminal image; a closed region creating unit that, based on the gradient information, creates a closed region so that the closed region has a boundary with pixels with positions satisfying a condition where the closed region does not include, on an inside thereof, any pixel of which a gradient strength is equal to or higher than a predetermined value, and also, a boundary of the closed region does not curve toward an interior of the closed region, with a curvature equal to or larger than a predetermined value; and an abnormal part detecting unit that detects the abnormal part from the inside of the closed region.
-
Specification