The number of bits assigned to represent the color intensity at image pixels is usually referred as the bit depth. When the bit depth is not sufficient, images suffer from ridge-like structures known as false contours. Bit-depth limitations become important when low-contrast details are required, as in medical imaging, aerial/satellite photography, and high-quality scanning applications. In thi...

In this work we propose an iterative algorithm for the estimation of high resolution frames from a low resolution compressed video sequence. The algorithm exploits the existing correlation between the high and low resolution frames and the information provided by the encoder to obtain a high resolution frame. The performance of the algorithm is demostrated experimentally.

a case of cystic craniopharyngioma is presented in which multiple micro-surgeries failed to result in cyst resolution and significant enhancement in patients symptoms. tumor irradiation using leksell gamma knife resulted in complete absorption of the remained cystic parts of the tumor and dramatic improvement in patients symptoms three months after the radiosurgery .possible mechanisms are dis ...