Abstract
A technique for enhancing the perceptual sharpness of an image is described. The enhancement algorithm augments the frequency content of the image using shape-invariant properties of edges across scale by using a nonlinearity that generates phase-coherent higher harmonics. The procedure utilizes the Laplacian transform and the Laplacian pyramid image representation. Results are presented depicting the power-spectra augmentation and the visual enhancement of several images. Simplicity of computations and east of implementation allow for real-time applications such as high-definition television (HDTV).
Original language | English |
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Pages (from-to) | 1035-1048 |
Number of pages | 14 |
Journal | IEEE Transactions on Image Processing |
Volume | 9 |
Issue number | 6 |
DOIs | |
State | Published - 2000 |