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

Claim 13:
14. The image processing apparatus according to claim 12, wherein
in the threshold setting step, the extracting step, the calculating step, the threshold selecting-setting step, the updating step, and the changing step are started from a point where the setting target threshold Th is a value corresponding to the first grayscale value, and are repeated until the setting target threshold Th is determined to be a value corresponding to a predetermined grayscale value between the first grayscale value and the second grayscale value, and
for each of the setting target thresholds Th lower than the second grayscale value, the dot concentration is calculated for all of the dots included in the first initial pattern updated in the updating step and the setting target threshold Th is set for the pixel in the threshold matrix corresponding to the dot with the highest dot concentration.