Image generation device, image generation method, image generation program, and recording medium

An image generation method in an image generation device which generates a mosaic image,

• the image generation method comprising:
• a specifying step of specifying, in units of divided areas, an image area in which an image is drawn in each layer of a plurality of layers which configure a material image which is a source of a mosaic image and which are divided into the plurality of divided areas;
• an allocating step of allocating the image acquired in the acquiring step to the divided areas in the image area of one of the layers, based on color information of the image acquired in the acquiring step and color information of each of the divided areas in the image area specified in the specifying step;
• and
• a generating step of generating a mosaic image by superimposing, between layers, the image allocated in the image area of two or more layers of the plurality of layers in which an image is allocated to at least one of all of the divided areas in the image area of each of the layers and the divided areas of another layer comprising a display position which overlaps the divided areas.

A non-transitory recording medium having a computer-readable image generation program recorded therein which causes a computer included in an image generation device which generates a mosaic image, to execute:

• a specifying step of specifying, in units of divided areas, an image area in which an image is drawn in each layer of a plurality of layers divided into the plurality of divided areas;
• an allocating step of allocating the image acquired in the acquiring step to the divided areas in the image area of one of the layers, based on color information of the image acquired in the acquiring step and color information of each of the divided areas in the image area specified in the specifying step;
• and
• a generating step of generating a mosaic image by superimposing, between layers, the image allocated in the image area of two or more layers of the plurality of layers in which an image is allocated to at least one of all of the divided areas in the image area of each of the layers and the divided areas of another layer comprising a display position which overlaps the divided areas.