Method, apparatus and recording medium for image processing

A computer readable recording medium storing a program to cause a computer to execute an image processing method of carrying out sharpness processing on image data at a desired resolution other than a predetermined resolution out of multiple-resolution image data obtained by converting image data into multiple resolution spaces and attached with sharpness information regarding sharpness processing to be carried out on the multiple-resolution image data upon reproduction of the image data at the predetermined resolution, the program comprising the procedures of:

• determination of sharpness processing to be carried out on the image data at the desired resolution, based on the desired resolution and the sharpness information;
• and
• acquisition of processed image data by carrying out the determined sharpness processing on the image data at the desired resolution,
• wherein the procedure of sharpness processing determination is a procedure of determining sharpness processing causing sharpness at a predetermined frequency included in a frequency band of 0.5˜2.0 cycles/mm of an image reproduced from the processed image data to approximately agree with sharpness at the predetermined frequency of the image data at the predetermined resolution on which the sharpness processing is carried out based on the sharpness information.