| 摘要 |
A method for enhancing sharpness for a digital image follows this sequence: (a) in a display of a computerized appliance, selecting an image to be enhanced in sharpness; (b) downsizing the selected image by a downsizing algorithm executing on the computerized appliance to produce an image 0 at resolution substantially less than resolution of the original image selected in step (a); (c) applying a convolution filter to image 0 to produce an image n with enhanced sharpness, where n is an integer; (d) subtracting pixel values for pixels of image n from corresponding pixels for image 0, saving the differences; (e) dividing the differences in step (d) by integer n, and saving the quotients; (f) adding the quotients from step (e) to values for corresponding pixels in image 0 to produce an image 1, then to values of pixels for image 1 to produce an image 2, and repeating until an image n-1 is produced; (g) presenting images 0 through n to a user for selection of a best image for sharpness; and (h) upsizing the user-selected image by an upsizing algorithm back to the resolution of the image selected in step (a).
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