| 摘要 |
PROBLEM TO BE SOLVED: To provide a threshold matrix of an FM screen in which non-uniformity is not conspicuous. SOLUTION: A threshold matrix generating device includes: a basic dot pattern generating device for obtaining a basic dot pattern by carrying out a convolution filter process to an initial dot pattern in which dots are arbitrarily arranged, by obtaining a dot density of the dots included in the initial dot pattern and by repeating a process of moving dots to a pixel in which the dot density is smallest from a pixel in which the dot density is greatest; and a threshold setting device for generating a threshold matrix of an FM screen by increasing or decreasing dots from the basic dot pattern and by repeating a process of setting a threshold to a pixel in which the dots are increased or decreased, and the threshold matrix has a shape which is to be arranged in an oblique direction by having an angle. COPYRIGHT: (C)2011,JPO&INPIT |
