Patent ID: 7158144
Filing Date: 2007-01-02
Classification: H04N

Abstract:
1. An image processing method for converting image data dependent on a first illuminating light into image data dependent on a second illuminating light, comprising the steps of: storing a conversion condition for a light source having a high color rendering property and a conversion condition for a light source having a low color rendering property; generating data indicating a proportion of synthesis of the stored conversion condition for the light source having the high color rendering property and the light source having the low color rendering property, corresponding to the second illuminating light; generating a first conversion condition from the stored conversion condition for the light source having the high color rendering property and from the stored conversion condition for the light source having the low color rendering property, according to the data indicating the proportion of synthesis; generating a second conversion condition for color temperature conversion, based on color temperature information of the second illuminating light; converting image data dependent on the first illuminating light into image data dependent on the second illuminating light using the first conversion condition and the second conversion condition; and displaying an image on a display unit based on the converted image data, wherein the conversion condition for the light source having the high color rendering property is obtained from measurement data of plural patches under the light source having the high color rendering property and measurement data of the plural patches under a standard light source, and the conversion condition for the light source having the low color rendering property is obtained from measurement data of plural patches under the light source having the low color rendering property and measurement data of the plural patches under the standard light source.