Image processing apparatus
AssigneeCanon Kabushiki Kaisha
InventorShigeru Ueda
Life of this patent
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Abstract
An image processing apparatus includes an input unit for inputting multivalue data for each pixel, a resolution conversion unit for generating multivalue data of one pixel corresponding to each block comprising one or a plurality of adjacent pixels of the input multivalue data in order to output multivalue data having a pixel density corresponding to a printing pixel density of a printing unit to the printing unit, and an assigning unit for assigning a magnification ratio of an output image. The resolution conversion unit changes the number of pixels of input image data constituting one block in accordance with the magnification ratio assigned by the assigning unit.
Claims12
An image processing apparatus comprising:
- input means for inputting first multivalue data for each pixel, said input means being capable of inputting the first multivalue data having a resolution different from a printing resolution of a printing unit;
- resolution conversion means for generating second multivalue data, one pixel of the second multivalue data corresponding to one block of the first multivalue data so as to output to the printing unit the second multivalue data having a resolution corresponding to the printing resolution;
- and
- assigning means for assigning a magnification ratio of an output image,
- wherein said resolution conversion means determines a number of pixels of the first multivalue data corresponding to one block in accordance with the magnification ratio assigned by said assigning means.
An image processing method comprising the steps of:
- inputting first multivalue data for each pixel, the first multivalue data having a resolution different from a printing resolution of a printing unit;
- generating second multivalue data, one pixel of the second multivalue data corresponding to one block of the first multivalue data so as to output to the printing unit the second multivalue data having a resolution corresponding to the printing resolution;
- and
- assigning a magnification ratio of an output image,
- wherein, in said generating step, a determination is made as to a number of pixels of the first multivalue data corresponding to one block, in accordance with the magnification ratio assigned in said assigning step.
Dependencies are inferred from the claim text.