| 摘要 |
PROBLEM TO BE SOLVED: To obtain a sharp and smooth enlarged digital still image by reducing a calculation time required for sharpening a digital image.SOLUTION: In a digital image device employing a Total Variation regularization method, an input signal of a digital image is separated into a skeleton component and a texture component, and the skeleton component is processed by a linear expansion filter, a Shock filter, and a Total Variation filter sequentially in this order to sharpen the image. |
