| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a gradation correction method, a gradation correction device and a computer program for performing gradation correction according to a gray scale standard display function. <P>SOLUTION: The gradation image of each gradation is displayed (S13) and data of luminance of the gradation image measured by a luminance meter are obtained (S14). Subsequently, on the basis of set white luminance and black luminance, a target luminance following a DICOM curve is calculated (S15). The RGB value of the image that gives the target luminance is compared with the RGB value of the gradation image that gives measured luminance, and when both of the RGB values are not coincident with each other, the target luminance is readjusted, while adjusting the black luminance or the white luminance (S19 or S21). When both of RGB values are coincident with each other, the RGB value (input gradation value) corresponding to output gradation value is registered (S23), thereby, a lookup table is completed and the gradation correction reflecting the lookup table is performed (S26). <P>COPYRIGHT: (C)2011,JPO&INPIT |
