Patent ID: 7385739

Claim:
An image processing method to generate a first conversion condition used to convert a device-independent color signal into a device-dependent color signal, and a second conversion condition used to convert the device-dependent color signal into another device-independent color signal, based on the basis of colorimetric values of which are measured from color patches output by an output device, comprising the steps of: inputting first and second image signals which depend on a target device, and converting the first and second image signals using a third conversion condition for the target device, the third conversion condition being a conversion condition that converts a color signal depending on the target device into a device-independent color signal; displaying first and second preview images, which are respectively represented by image signals obtained by converting converted first and second image signals using the first conversion condition, and further converting the converted first and second image signals using the second conversion condition; displaying first and second original images, which are respectively represented by the first and second image signals obtained by conversion using the third conversion condition; inputting selection of an arbitrary color range to be tuned from either one of the displayed first preview image, the displayed second preview images, the displayed first original image, or the displayed second original image; inputting tuning data to tune colors that are within the selected color range; and tuning the first and second conversion conditions based on the input tuning data, wherein the first preview image is a setting image which a user sets the tuning data, and the second preview image is a color chart image, and the selected color range is displayed on the first and second preview images so that the user can confirm the colors that are within the selected color range.