Back to results
US 2002/0159633 A1Published application
Image processing apparatus, image processing system, image processing method, and computer-readable storage medium
AssigneeCanon Kabushiki Kaisha
InventorHitoshi Inoue
Life of this patent
Estimating the term…
Abstract
An image processing apparatus creates a pixel value histogram of an objective image, and approximates a predetermined range of the created histogram by a bended line formed from two straight lines. Then the apparatus extracts a pixel value at a boundary between a predetermined region and another region of the objective image in accordance with the approximation.
Claims23
An image processing apparatus comprising:
- a histogram creation unit for creating a pixel value histogram of an objective image;
- and
- an extraction unit for extracting a pixel value at a boundary between a predetermined region and another region of the objective image by approximating by a bended line formed from two straight lines a predetermined range of the histogram created by said histogram creation unit.
An image processing method comprising steps of:
- creating a pixel value histogram of an objective image;
- and
- extracting a pixel value at a boundary between a predetermined region and another region of the objective image by approximating by a bended line formed from two straight lines a predetermined range of the histogram created in the step of creating the histogram.
Dependencies are inferred from the claim text.