Although the first filtering algorithms have been proposed more than 30 years ago,
despeckling of synthetic aperture radar images is still an open issue. A new boost has been …

Data coming from any acquisition system, such as Magnetic Resonance Imaging ones, are
affected by noise. Although modern high field scanners can reach high Signal to Noise …

When we gaze a scene, our visual acuity is maximal at the fixation point (imaged by the
fovea, the central part of the retina) and decreases rapidly towards the periphery of the …

Ultrasound images are affected by the speckle phenomenon, a multiplicative noise that
degrades image quality. Several methods for denoising have been proposed in recent …

Nonlocal means synthetic aperture radar (SAR) image despeckling approaches have
attracted much research attention. However, high computational burden always limits its …

Salt-and-pepper noise consists of outlier pixel values which significantly impair image
structure and quality. Multiparent fractal image coding (MFIC) methods substantially exploit …

We generalize the mathematics of fractal transformations and illustrate how it leads to a new
approach to the representation and processing of digital images, and consequent novel …

Since its introduction in 2004, the Structural Similarity (SSIM) index has gained widespread
popularity as an image quality assessment measure. SSIM is currently recognized to be one …

The process of producing a high-resolution image given a single low-resolution noisy
measurement is called single-frame image super-resolution (SISR). Historically, many fractal …

This paper utilizes a spatial texture correlation and the intelligent classification algorithm
(ICA) search strategy to speed up the encoding process and improve the bit rate for fractal …