Adaptive optics (AO) is an effective method to compensate the wavefront distortion caused by atmospheric turbulence and system distortion. The accuracy speed of aberration restoration are important factors affecting performance adaptive correction. In recent years, AO correction based on a convolutional neural network (CNN) has been proposed for non-iterative extraction light intensity image fe...

Markov Stationary Features (MSF) based on homogeneous chain model, for content-based image analysis, is getting popularity nowadays. It not only considers the distribution of colors, just as histogram method does, but also characterizes spatial co-occurrence patterns. However, handling a large-scale database images with degree heterogeneity, simple MSF sufficient to discriminate one requires. I...

Chondromyxoid fibroma of frontal bone is a rare lesion. Plain skull films showed a round radiolucent mass with a sclerotic margin. It was dense on plain CT scan and showed no convincing contrast enhancement. MR imaging showed low signal intensity relative to gray matter on T1-weighted image (500/20), isointensity on proton-density image (2000/30), high intensity on T2-weighted image, and marked...

This paper demonstrates a technique for constructing a mapping between pixel values and pixel colours to create a composite colour image in which the colours are distributed uniformly in RGB colour space. Visual inspection of such an image utilises the full range of the human visual system, both in terms of intensity and hue. The perceived result is an enhanced image which usually has a subject...

This paper presents a novel error detection and correction methodology for corrupted coefficients caused by transmission of coded images based on orthogonal transforms over a noisy channel. This method is based on the orthogonal property of image transforms, such as the discrete cosine transform. A few reference pixel intensities of each image block are replaced by a predetermined intensity lev...