Image processing method, image processing device and printing system utilizing different gradation tables in overlapping regions based on attribute and environmental information

An image processing device for generating printing data for causing a printing apparatus to perform printing, the printing apparatus printing a desired image on a printing medium by repeatedly performing a partial printing operation of printing partial images that constitute a part of the desired image based on first image data in a first color space and a transport operation of moving the printing medium, the device comprising:

• an image data acquisition section that acquires a first image data,
• an input section that inputs attribute information of the printing medium on which the printing apparatus is to perform printing and environmental information of an environment in which the printing apparatus is to perform printing,
• an image processing section that generates the printing data based on the acquired first image data;
• and
• a transmission section that transmits the generated printing data to the printing apparatus,
• wherein the image processing section
• divides the desired image into a first image region formed with the partial images and a second image region formed by overlapping the partial images,
• converts the first image data in the first color space corresponding to the first image region into second image data in a second color space using a first conversion table that has a gradation value,
• selects one second conversion table from a plurality of second conversion tables which have been prepared so as to have different gradation values from each other and include a base conversion table that is the same as the first conversion table, a plurality of conversion tables each of which has a gradation value greater than a gradation value of the base conversion table, and a plurality of conversion tables each of which has a gradation value less than the gradation value of the base conversion table, and which are used for converting the first image data in the first color space corresponding to the second image region into third image data in the second color space, based on the attribute information that is input to the input section and the environmental information that is input to the input section,
• converts the first image data in the first color space corresponding to the second image region into the third image data in the second color space using the one second conversion table that has been selected, and
• generates the printing data based on the second image data and the third image data.

An image processing device for generating printing data for causing a printing apparatus to perform printing, the printing apparatus printing a desired image on a printing medium by repeatedly performing a partial printing operation of printing partial images that constitute a part of the desired image based on first image data in a first color space and a transport operation of moving the printing medium, the device comprising:

• an image data acquisition section that acquires a first image data,
• an input section that inputs attribute information of the printing medium on which the printing apparatus is to perform printing and environmental information of an environment in which the printing apparatus is to perform printing,
• an image processing section that generates the printing data based on the acquired first image data, and
• a transmission section that transmits the generated printing data to the printing apparatus,
• wherein the image processing section
• divides the desired image into a first image region formed with a plurality of partial images and a second image region formed by overlapping more partial images than the partial images constituting the first image region,
• converts the first image data in the first color space corresponding to the first image region into second image data in a second color space using a first conversion table that has a gradation value,
• selects one second conversion table from a plurality of second conversion tables which have been prepared so as to have different gradation values from each other and include a base conversion table that is the same as the first conversion table, a plurality of conversion tables each of which has a gradation value greater than a gradation value of the base conversion table, and a plurality of conversion tables each of which has a gradation value less than the gradation value of the base conversion table, and which are used for converting the first image data in the first color space corresponding to the second image region into third image data in the second color space, based on the attribute information and the environmental information,
• converts the first image data in the first color space corresponding to the second image region into the third image data in the second color space using the one second conversion table that has been selected, and
• generates the printing data based on the second image data and the third image data.