| 摘要 |
An input image is divided into images composed of luminance signals of a plurality of bands that make up the Laplacian pyramid, noise suppression is applied to each divided image, and then the divided images are composited by addition. The input image is also divided into images composed of color signals of a plurality of bands that make up the Gaussian pyramid, noise suppression is applied to each divided image, and the divided images are composited at an image-based ratio. By thus compositing the luminance signals and color signals, excellent noise suppression can be realized while alleviating deterioration in the image quality during the compositing. |
