Image processing apparatus and image processing method
First Claim
1. An image processing apparatus for converting a multiple gradation image into a binary or multivalue image by use of an area gradation method according to a screen cell, comprising:
- a receiving unit that receives an input pixel value of each pixel of the multiple gradation image and position information on the screen cell; and
an output unit that outputs an output pixel value, which is increased or decreased with an increase in the input pixel value, at a pixel position on the screen cell corresponding to the position information, according to the input pixel value and the position information received by the receiving unit.
1 Assignment
0 Petitions
Accused Products
Abstract
An image processing apparatus for converting a multiple gradation image into a binary or multivalue image by use of an area gradation method according to a screen cell, which includes: a receiving unit that receives an input pixel value of each pixel of the multiple gradation image and position information on the screen cell; and an output unit that outputs an output pixel value, which is increased or decreased with an increase in the input pixel value, at a pixel position on the screen cell corresponding to the position information, according to the input pixel value and the position information received by the receiving unit.
9 Citations
10 Claims
-
1. An image processing apparatus for converting a multiple gradation image into a binary or multivalue image by use of an area gradation method according to a screen cell, comprising:
-
a receiving unit that receives an input pixel value of each pixel of the multiple gradation image and position information on the screen cell; and
an output unit that outputs an output pixel value, which is increased or decreased with an increase in the input pixel value, at a pixel position on the screen cell corresponding to the position information, according to the input pixel value and the position information received by the receiving unit. - View Dependent Claims (2, 3, 4, 5)
-
-
6. An image processing method which converts a multiple gradation image into a binary or multivalue image by use of an area gradation method according to a screen cell, comprising:
-
receiving an input pixel value of each pixel of the multiple gradation image and position information on the screen cell; and
outputting an output pixel value which is increased or decreased with an increase in the input pixel value at a pixel position on the screen cell corresponding to the position information, according to the received input pixel value and the position information. - View Dependent Claims (7, 8, 9, 10)
-
Specification