In quantum gray-scale image processing, the storage in quantum states is the color information and the position information According to the advantage of small range of the gray scale in a gray-scale image, a novel storage expression of quantum gray-scale image is proposed and demonstrated in this study. Besides, a new concept of "quantum pointer" is put forward based on the expression. Quantum...

OBJECTIVE This study was designed to determine whether hypnosis can modulate color perception. Such evidence would provide insight into the nature of hypnosis and its underlying mechanisms. METHOD Eight highly hypnotizable subjects were asked to see a color pattern in color, a similar gray-scale pattern in color, the color pattern as gray scale, and the gray-scale pattern as gray scale during...

The problem of optimal mapping of multi-level gray scale images to a coarser gray scale is formulated and explored. A distance between images having different intensity ranges is introduced. Minimization of such a distance can be viewed as least squares approximation of a source high range image by the best target image with a given number of levels of gray. Following S.Lloyd [1], we proved tha...