| US 7,515,765 B1 | ||
| Image sharpness management | ||
| Lindsay William MacDonald, Youlgrave (United Kingdom); and Samira Bouzit, Fife (United Kingdom) | ||
| Assigned to Apple Inc., Cupertino, Calif. (US) | ||
| Filed on Aug. 18, 2004, as Appl. No. 10/920,585. | ||
| Application 10/920585 is a continuation of application No. 10/768721, filed on Jan. 30, 2004, abandoned. | ||
| Int. Cl. G06K 9/40 (2006.01); G06K 9/36 (2006.01) | ||
| U.S. Cl. 382—263 | 35 Claims |
| 1. A method comprising:
using at least one processor to perform steps, comprising,
transforming an image into a plurality of spatial frequency bands;
calculating average values for each of the spatial frequency bands;
weighting each of the spatial frequency bands by a Modulation Transfer Function (MTF) ratio value; and
after said weighting, adjusting a relative amplitude of different ones of the spatial frequency bands to generate a modified
image using an adjustment value associated with the average values.
|