| 摘要 |
<p>An original image is transformed into a multi-resolution space and is thereby decomposed into images, each of which is of one of a plurality of different frequency bands. Emphasis processing is carried out on an image of a predetermined frequency band, which is among the plurality of the different frequency bands, by setting the degrees of emphasis such that the degree of emphasis for a picture element of the image of the predetermined frequency band, which picture element has a picture element value larger than a predetermined threshold value, may be set to be lower than the degrees of emphasis for the other picture elements of the image of the predetermined frequency band. An inverse transform is then carried out on the image of the predetermined frequency band, which has been obtained from the emphasis processing, and the images of the other frequency bands. A processed image signal is thereby obtained.</p> |
