Image processing apparatus, image processing method, and storage medium to convert image data

An image processing method comprising:

• determining whether image data obtained by reading a document with a reader is color or monochrome;
• saving color image data determined to be color and monochrome image data generated by monochrome conversion of the color image data, in association with each other as a learning sample;
• deciding, using the learning sample, a color conversion parameter to be used when image data read by the reader and determined to be monochrome image data is converted into a color image;
• and
• converting the image data read by the reader and determined to be monochrome image data into color image data, using the decided color conversion parameter.

A computer readable storage medium storing a program that causes a computer of a subject apparatus to execute an image processing method, the image processing method comprising:

• determining whether image data obtained by reading a document with a reader is color or monochrome;
• saving color image data determined to be color and monochrome image data generated by monochrome conversion of the color image data, in association with each other as a learning sample;
• deciding, using the learning sample, a color conversion parameter to be used when image data read by the reader and determined to be monochrome image data is converted into a color image;
• and
• converting the image data read by the reader and determined to be monochrome image data into color image data, using the decided color conversion parameter.

An image processing apparatus comprising:

• a reader;
• a memory that stores a program;
• and
• a processor that causes, by executing the program stored in the memory, the image processing system to:
• cause the reader to read a document;
• determine whether image data obtained by reading the document with the reader is color or monochrome;
• determine, as a learning sample, color image data determined to be color and monochrome image data generated by monochrome conversion of the color image data;
• cause the reader to read a new document;
• and
• obtain color image data to which new image data obtained by reading the new document with the reader and determined to be monochrome image data is converted using the learning sample.