Image forming device
AssigneeSharp Kabushiki Kaisha
InventorsMasaaki Ohtsuki, Mitsuru Tokuyama, Mihoko Tanimura, Masatsugu Nakamura
Life of this patent
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Abstract
The image forming device according to the present invention performs resolution conversion processing or scaling processing of a binary image and outputs a processed image. The present image forming device is provided with an edge detecting section, which, during resolution conversion or scaling of the binary image, detects edges of the image and detects lengths and shapes of the edges, and with an interpolated/skipped line producing section, which performs resolution conversion processing or scaling processing based on the lengths and shapes of edges detected by the edge detecting section.
Claims23
An image forming device comprising:
- edge detecting means, which detect length and shape of an edge of a binary image;
- and
- interpolating means, which, based on the length and shape of the edge detected by said edge detecting means, perform resolution conversion processing or scaling processing of the binary image;
- wherein said edge detecting means detect the length and shape of the edge by comparing a given pixel with other pixels of a line parallel to a primary scanning direction to which the given pixel belongs, moving from the given pixel in each direction along the line.
An image forming device comprising:
- edge detecting means, which detect an edge of a binary image, and detect length and shape of the edge;
- interpolating means, which, based on the length and shape of the edge detected by said edge detecting means, perform resolution conversion processing or scaling processing of the binary image;
- pattern mask means, which perform resolution conversion processing or scaling processing of the binary image by means of a pattern matching mask;
- and
- combining means, which process and combine the resolution conversion processing or scaling processing of the binary image performed by said interpolating means and the resolution conversion processing or scaling processing of the binary image performed by said pattern mask means.
An image forming device comprising:
- edge detecting means, which, during resolution conversion or scaling of a binary image, detect an edge of an image, and detect length and shape of the edge;
- and
- interpolating means, which, based on the length and shape of the edge detected by said edge detecting means, perform resolution conversion processing or scaling processing;
- wherein in detecting the edge of the image and the length and shape of the edge, said edge detecting means detect a state of the edge by comparing a given pixel, belonging to a line parallel to a primary scanning direction, with a pixel of an adjacent line parallel to the primary scanning direction, and find a position of an end of the edge and the length of the edge by performing the comparison moving from the given pixel in each direction along the lines.
An image forming device comprising:
- edge detecting means, which, during resolution conversion or scaling of a binary image, detect an edge of an image, and detect length and shape of the edge;
- interpolating means, which, based on the length and shape of the edge detected by said edge detecting means, perform resolution conversion processing or scaling processing;
- pattern mask means, which perform resolution conversion processing or scaling processing by means of a pattern matching mask;
- and
- combining means, which process and combine the resolution conversion processing or scaling processing performed by said interpolating means and the resolution conversion processing or scaling processing performed by said pattern mask means.
Dependencies are inferred from the claim text.