Apparatus, method, program, and storage medium
An object of the present invention is to reduce a processing time and make a printed image look better in appearance in processing of printing a two-dimensional code again. In order to achieve the above-described object, an apparatus according to the present invention includes decoding unit for decoding a non-upright two-dimensional code in a manuscript image, and synthesis unit for creating a two-dimensional code by using information obtained by the decoding, to synthesize the two-dimensional code in an upright state onto the manuscript image.
1. An image forming apparatus comprising:
a decoding unit operable to decode a first two-dimensional code serving as a non-upright two-dimensional code in a manuscript image;
a synthesis unit operable to create a second two-dimensional code serving as an upright two-dimensional code by using information obtained by the decoding unit, to synthesize the second two-dimensional code onto the printed image data; and
a calculating unit operable to calculate a rotation angle of the first two-dimensional code,
wherein the synthesis unit determines whether the rotation angle of the first two-dimensional code is greater than a rotation angle threshold value (θ) determined by a threshold length Z, and, if the rotation angle of the first two-dimensional code is greater than the rotation angle threshold value (θ), the synthesis unit synthesizes the second two-dimensional code onto the printed image data by rotating the second two-dimensional code by the rotation angle of the first two-dimensional code, and, if the rotation angle of the first two-dimensional code is less than or equal to the rotation angle threshold value (θ), the synthesis unit synthesizes the second two-dimensional code onto the printed image data without rotating the second two-dimensional code, and
wherein the rotation angle threshold value (θ) satisfies an equation:
A (sin θ+cos θ−1)≦ Z,
A being a length of one side of the first two-dimensional code in millimeters and the threshold length Z being in millimeters.
2. The image forming apparatus according to claim 1 , wherein, if the second two-dimensional code is synthesized onto the printed image data, the synthesis unit is operable to calculate a circumscribed rectangular area of the first two-dimensional code, and to synthesize the second two-dimensional code in an upright state inside the calculated circumscribed rectangular area.
3. The image forming apparatus according to claim 2 , wherein, if the second two-dimensional code is synthesized in an upright state onto the printed image data, the synthesis unit is operable to change a color of pixels in the circumscribed rectangular area of the first two-dimensional code.
4. The image forming apparatus according to claim 1 , wherein, if the second two-dimensional code is synthesized onto the printed image data, the synthesis unit is operable to calculate an area based on a circumscribed rectangular area of the first two-dimensional code, and to synthesize the second two-dimensional code inside the calculated area based on the circumscribed rectangular area of the first two-dimensional code.
5. The image forming apparatus according to claim 4 , wherein, if the second two-dimensional code is synthesized onto the printed image data, the synthesis unit is operable to change a color of pixels in the area based on the circumscribed rectangular area of the first two-dimensional code.
6. An image forming method comprising:
decoding a first two-dimensional code serving as a non-upright two-dimensional code in a manuscript image;
creating a second two-dimensional code serving as an upright two-dimensional code by using information obtained by the decoding, to synthesize the second two-dimensional code onto printed image data;
calculating a rotation angle of the first two-dimensional code; and
determining whether the rotation angle of the first two-dimensional code is greater than a rotation angle threshold value (θ) determined by a threshold length Z;
wherein, if the rotation angle of the first two-dimensional code is determined to be greater than the rotation angle threshold value (θ), the second two-dimensional code is synthesized onto the printed image data by rotating the second two-dimensional code by the rotation angle of the first two-dimensional code,
wherein, if the rotation angle of the first two-dimensional code is determined to be less than or equal to the rotation angle threshold value (θ), the second two-dimensional code is synthesized onto the printed image data without rotating the second two-dimensional code, and
wherein the rotation angle threshold value (θ) satisfies an equation:
A (sin θ+cos θ−1)≦ Z,
A being a length of one side of the first two-dimensional code in millimeters and the threshold length Z being in millimeters.
7. The image forming method according to claim 6 , wherein, if the second two-dimensional code is synthesized onto the printed image data, a circumscribed rectangular area of the first two-dimensional code is calculated, and the second two-dimensional code is synthesized in an upright state inside the calculated circumscribed rectangular area.
8. The image forming method according to claim 7 , wherein, if the second two-dimensional code is synthesized in an upright state onto the printed image data, a color of pixels in the circumscribed rectangular area of the first two-dimensional code is changed.
9. The image forming method according to claim 6 , wherein, if the second two-dimensional code is synthesized onto the printed image data, an area based on a circumscribed rectangular area of the first two-dimensional code is calculated, and the second two-dimensional code is synthesized inside the calculated area based on the circumscribed rectangular area of the first two-dimensional code.
10. The image forming method according to claim 9 , wherein, if the second two-dimensional code is synthesized onto the printed image data, a color of pixels in an area based on the circumscribed rectangular area of the first two-dimensional code is changed.
11. A computer-readable storage medium storing a computer-executable program that, when executed by a computer processor, causes the computer processor to perform an image forming method, the method comprising:
decoding a first two-dimensional code serving as a non-upright two-dimensional code in a manuscript image;
creating a second two-dimensional code serving as an upright two-dimensional code by using information obtained by the decoding, to synthesize the second two-dimensional code onto printed image data; and
calculating a rotation angle of the first two-dimensional code; and
determining whether the rotation angle of the first two-dimensional code is greater than a rotation angle threshold value (θ) determined by a threshold length Z;
wherein, if the rotation angle of the first two-dimensional code is determined to be greater than the rotation angle threshold value (θ), the second two-dimensional code is synthesized onto the printed image data by rotating the second two-dimensional code by the rotation angle of the first two-dimensional code,
wherein, if the rotation angle of the first two-dimensional code is determined to be less than or equal to the rotation angle threshold value (θ), the second two-dimensional code is synthesized onto the printed image data without rotating the second two-dimensional code, and
wherein the rotation angle threshold value (θ) satisfies an equation:
A (sin θ+cos θ−1)≦ Z,
A being a length of one side of the first two-dimensional code in millimeters and the threshold length Z being in millimeters.
12. The image forming apparatus according to claim 1 , wherein the printed image data is image data obtained by eliminating the first two-dimensional code from the manuscript image.
13. The image forming method according to claim 6 , wherein the printed image data is image data obtained by eliminating the first two-dimensional code from the manuscript image.