Image processing apparatus

摘要

An image processing apparatus that generates contour information of an image object included in input image data and compresses image data using the contour information includes a smoothing processing part that performs a smoothing process on the input image data; a contour extraction part that extracts the contour information of the image object included in the image data on which the smoothing process is performed; and a contour correction part that corrects the contour information extracted by the contour extraction part.

主权项

1. An image processing apparatus that generates contour information of an image object included in input image data and compresses image data using the contour information, comprising:
a specific pattern region judgment part that determines if each pixel of the input image data is within a specific pattern region and outputs a region judgment result; a contour extraction part that extracts the contour information of the image object included in the input image data; and a contour correction part that corrects the contour information extracted by the contour extraction part based on the region judgment result, wherein the contour correction part has: a pixel value evaluation part that counts a status of region pixels in a predetermined region adjacent to a first target pixel of the contour information extracted by the contour extraction part, evaluates a count result of the region pixels in the predetermined region, and outputs corrected contour information; a first notch removal part that removes a first isolated pixel from the corrected contour information to clarify the corrected contour information, and outputs clarified first contour information; a second notch removal part that removes a second isolated pixel from the contour information extracted by the contour extraction part to clarify the corrected contour information, and outputs clarified second contour information; and a contour information composition part that selects either the clarified first corrected contour information or the clarified second corrected contour information based on the region judgment result for each pixel, and outputs final contour information of the image object.