Image processing apparatus, image processing method, and non-transitory computer-readable storage medium storing a program that performs dynamic range conversion based on obtained display information

An image processing method to be executed in an image processing apparatus, the method comprising:

• obtaining high-dynamic range (HDR) data that represents a high-dynamic range (HDR) image and has been obtained by using a transfer function;
• obtaining print information to perform printing based on the obtained HDR data;
• obtaining display information for a display apparatus in which a print preview is displayed, based on the obtained HDR data;
• performing region division on a low-frequency component of the HDR image represented by the obtained HDR data;
• converting, by using a luminance range of the display apparatus indicated by the obtained display information, a dynamic range of luminance of the obtained HDR data into a first dynamic range by which the print preview is to be performed;
• and
• converting, by using the obtained print information, the first dynamic range into a second dynamic range by which printing is to be performed,
• wherein the dynamic range conversion is performed by using information for the dynamic range conversion that is set for the divided region.

A non-transitory computer-readable storage medium storing a program to cause a computer to function:

• to obtain high-dynamic range (HDR) data that represents a high-dynamic range (HDR) image and has been obtained by using a transfer function;
• to obtain print information to perform printing based on the obtained HDR data;
• to obtain display information for a display apparatus in which a print preview is displayed based on the HDR data;
• to perform region division on a low-frequency component of the HDR image represented by the obtained HDR data;
• to convert, by using a luminance range of the display apparatus indicated by the obtained display information, a dynamic range of luminance of the obtained HDR data into a first dynamic range by which the print preview is to be performed;
• and
• to convert, by using the obtained print information, the first dynamic range into a second dynamic range by which printing is to be performed,
• wherein the dynamic range conversion is performed by using information for the dynamic range conversion that is set for the divided region.