IMAGE PROCESSING APPARATUS AND IMAGE FORMING APPARATUS

摘要

In an image processing apparatus, an area separating unit classifies a property of a pixel in an image into any of plural properties that include at least a character property and an image property, a black generation and UCR processing unit performs a black generation process and a UCR process for the image, and a process amount specifying unit specifies a black generation amount and a UCR amount used in the black generation process and the UCR process to the black generation and UCR processing unit. Further, the process amount specifying unit sets the black generation amount and the UCR amount on the basis of a smallest color component value of a pixel with the image property using a conversion characteristic that varies in accordance with a lightness value, a chroma saturation value and a hue value of the pixel with the image property.

主权项

1. An image processing apparatus, comprising:
an area separating unit configured to classify a property of a pixel in an image into any of plural properties that include at least a character property and an image property; a black generation and UCR processing unit configured to perform a black generation process and a UCR process for the image; and a process amount specifying unit configured to specify a black generation amount and a UCR amount used in the black generation process and the UCR process to the black generation and UCR processing unit; wherein the process amount specifying unit is further configured to set the black generation amount and the UCR amount on the basis of a smallest color component value of a pixel with the image property using a conversion characteristic that varies in accordance with a lightness value, a chroma saturation value and a hue value of the pixel with the image property.