Patent ID: 11893288
Assignee: CANON KABUSHIKI KAISHA
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G

Claim 11:
12. The image processing apparatus according to claim 1, wherein the threshold setting step includes:
an extracting step of extracting dots not included in the second initial pattern among dots in the first initial pattern as extracted dots;
a calculating step of calculating dot concentration in the first initial pattern for each of the extracted dots;
a threshold selecting-setting step of selecting the extracted dot with the highest dot concentration and setting a setting target threshold Th for a pixel in the threshold matrix corresponding to the selected extracted dot;
an updating step of updating the first initial pattern by deleting the selected dot from the first initial pattern; and
a changing step of changing the setting target threshold by subtracting 1 from the setting target threshold Th, and
the extracting step, the calculating step, the threshold selecting-setting step, the updating step, and the changing step are repeated in this order.