Patent ID: 9111354
Filing Date: 2015-08-18
Classification: G06T,H04N

Abstract:
1. An image processing apparatus comprising: a first error diffusion unit which performs error diffusion processing on a predetermined first pixel of interest in image data; a second error diffusion unit which performs error diffusion processing on a second pixel of interest that is on a same line as that of the first pixel of interest and is next to the first pixel of interest, the second error diffusing unit comprising: a first determining unit which determines whether quantized data for the second pixel of interest is fixed by error diffusion processing by the second error diffusion unit or not, wherein the second error diffusion unit performs error diffusion processing in parallel with the first error diffusion unit, the calculation unit calculates the quantized data and the error value if the first determining unit determines that the quantized data is fixed, and the first determining unit determines whether the quantized data for the second pixel of interest is fixed by the second error diffusion unit or not on the basis of whether the total of value is equal to or lower than a first reference value or not and whether the total of value is equal to or higher than a second reference value that is higher than the first reference value or not.