Halftone image generation, device, halftone image generation method, and computer-readable storage medium for computer program

A halftone image generation method that, by partially selecting and blending a first halftone image obtained by halftone processing a specific image using a first method and a second halftone image obtained by halftone processing the specific image using a second method that differs from the first method, generates a third halftone image of the specific image, the method comprising:

• performing a detection process for detecting, from the first halftone image, a dot pixel in which a dot is disposed;
• and
• performing a blending process for blending the first halftone image and the second halftone image by, in a case where a dot is not disposed in any of neighboring pixels in the first halftone image that neighbor the dot pixel, employing, as binary values of isolated-point related pixels in the third halftone image that are in a same position as the dot pixel and the neighboring pixels, binary values of the dot pixel and the neighboring pixels.

A non-transitory computer-readable storage medium storing thereon a computer program used in a computer configured to, by partially selecting and blending a first halftone image obtained by halftone processing a specific image using a first method and a second halftone image obtained by halftone processing the specific image using a second method that differs from the first method, generate a third halftone image of the specific image, the computer program causing the computer to perform:

• a detection process for detecting, from the first halftone image, a dot pixel in which a dot is disposed;
• and
• a blending process for blending the first halftone image and the second halftone image by, in a case where a dot is not disposed in any of neighboring pixels in the first halftone image that neighbor the dot pixel, employing, as binary values of isolated-point related pixels in the third halftone image that are in a same position as the dot pixel and the neighboring pixels, binary values of the dot pixel and the neighboring pixels.