| 摘要 |
PURPOSE:To provide a constantly optimum shading correction image by setting a parameter, by means of which the nature of an inputted image is represented, to produce a mask image for correcting shading and performing correction of shading of an inputted image by using the mask image. CONSTITUTION:When an image processing method is applied to an ophthalmic image processing system, after an eyeground photograph photographed by a fundus camera device 1 is converted into digital data by means of a slide scanner 2, various image processing and analyzing diagnosis are effected by means of a computer 3. Correction of shading of an inputted image is effected but in this case, a cut frequency being the frequency of a macula lutea considered to have a minimum frequency is set as a parameter. Based on the parameter, the size of a smoothing filter for producing a shading image and the number of repeating times are decided. By using a table preset based on the parameter, a mask image for correcting shading is produced, and by using the mask image, correction of shading of an inputted image is effected. |
