Abstract
Visual information transmitted in the form of digital images is becoming a major method of communication in the modern age, but the image obtained after transmission is often corrupted with noise. The received image needs processing before it can be used in applications. Image denoising involves the manipulation of the image data to produce a visually high quality image. Salt & pepper (Impulse) noise and the additive white Gaussian noise and blurredness are the types of noise that occur during transmission and capturing. To remove these types of noise we have many filters like mean filter, median filter, inverse filter, wiener filter. No single one filter can remove both types of noise. A new approach for de-noising based on multilevel filter is proposed in this paper. The numerical computation has been done using MATLAB 7.8.0. Keywords: Peak Signal to noise ratio, Image denoising, Image restoration, Filter.
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