Image processing method and image processor
AssigneesFujitsu Limited, Fujitsu Frontech Limited
InventorsTomoharu Suzuki, Shinichi Eguchi
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Abstract
An image processing method extracts line segment elements from grayscale captured images, so that line segments are extracted at high-speed without being influenced by contrast ratio, even if morphology processing is used. A selection processing select an area where continuous line segments possibly exist from the captured image and a morphology processing detect line segment elements in the selected area by scanning an operator. Line segments can be extracted in a plurality of directions at high-speed. Also by an extraction target area selection processing, an area of which contrast ratio is low, continuing from an area of which contrast ratio is high in the line segment growth direction is also extracted as one line segment.
Claims26
An image processing method for extracting line segment elements from a grayscale captured image, comprising the steps of:
- binarizing an image according to said captured image and selecting an extraction area of said captured image from said binary image;
- executing morphology processing by scanning an operator on said selected extraction area in a plurality of directions and extracting linear elements from the extracted image in each direction;
- and
- extracting line segment elements from said extracted linear elements.
An image processing method for extracting line segment elements from a grayscale captured image, comprising the steps of:
- executing morphology processing by scanning an operator over an image according to said captured image in a plurality of directions and extracting linear elements from the extracted images in each direction;
- extracting an area of which contrast ratio is relatively high and an area of which contrast ratio is relatively low from the image on which said morphology processing is performed;
- and
- extracting the linear elements in said area of which contrast ratio is relatively low, connecting to said area of which contrast ratio is relatively high, as the line segment elements.
An image processor for extracting line segment elements from a grayscale captured image, comprising:
- an image capturing device for capturing the image of a test subject;
- and
- a line segment extraction device for binarizing an image according to said captured image which is captured by said image capturing device, selecting an extraction area of said captured image, performing morphology processing by scanning an operator over said selected extraction area in a plurality of directions and extracting linear elements from the extracted image in each direction, and extracting line segment elements from said extracted linear elements.
An image processor for extracting line segment elements from a grayscale captured image, comprising:
- an image capturing device for capturing the image of a test subject;
- and
- a line segment extraction device for executing morphology processing for extracting linear elements from the extracted images in each direction by scanning an operator over an image according to said captured image which is captured by said image capturing device in a plurality of directions, extracting an area of which contrast ratio is relatively high and an area of which contrast ratio is relatively low from the image on which said morphology processing is performed, and extracting the linear elements in said area of which contrast ratio is relatively low, connecting to said area of which contrast ratio is relatively high, as the line segment elements.
Dependencies are inferred from the claim text.