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Estimating Image Blur Using Discrete Multiwavelet Transform | ||
| Engineering and Technology Journal | ||
| Volume 24, Issue 2, February 2005, Pages 118-128 PDF (1.23 M) | ||
| Document Type: Research Paper | ||
| DOI: 10.30684/etj.24.2A.6 | ||
| Author | ||
| Matheel Emad AL - Deen Abdulmunim | ||
| Applied Science Dep., University of Technology | ||
| Abstract | ||
| Abstract : In this paper , a multiwavelet based method is proposed to estimate the blur in an image using information contained in the image itself . We look at the sharpness of the sharpest edges in the blurred image , which contain information about the blurring . Specifically , a smoothness measure , the Lipschitz exponent , is computed for these sharpest edges . A relation between the variance of a gaussian point spread function and the magnitude of the Lipschitz exponent is shown , which is only dependent on the blur in the image and not on the image contents . This allows us to estimate the variance of the blur directly from the image itself . | ||
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