Image processing method, apparatus, and recording system determining when to generate black dots after resolution reduction
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United States of America Patent
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Jun 21, 2022
Grant Date -
Jan 6, 2022
app pub date -
Jul 1, 2021
filing date -
Jul 3, 2020
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Abstract
An image processing method is an image processing method of a recording device. The image processing method includes inputting the image data having a resolution in a sub scanning direction of X×N dpi, performing data processing on the image data for each N-unit region, performing resolution reduction processing of reducing, to 1/N, a resolution in the sub scanning direction, and generating a recording data based on the reduced image data. In the data processing step, when the N-unit region is formed of a pixel having a black gradation value and a pixel having a gradation value that is equal to or greater than a predetermined value when expressed by RGB, and the pixel having the black gradation value is consecutive from another N-unit region adjacent to the N-unit region, a black dot is generated in a pixel after the resolution reduction processing.
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