Colorization Of Grayscale Video

Computer science and multimedia technology have become more and more developed, they also play a great role in people's lives. For example, we use science and technology to convert the black and white film into a color film, which makes people enjoy a better visual effect. In the process of image and video processing, the image and video processing of color migration algorithm has the most important influence on people. Now, color transfer algorithm has many kinds, this paper first to now have the color transfer algorithm are analyzed and summarized and on the basis of color migration algorithm was optimized and improved, and ultimately to achieve the color migration of black and white video.The main content of this paper is the color of black and white video of the problem. We all know that a video is composed of a plurality of images, then we can will give a black-and-white video coloring problem is converted into to a video of every frame image color, so it can be decomposed into single image coloring to choose a fast and accurate method for single picture painted is crucial. In this paper, through the research and comparison of various algorithms, finally choose the coloring method is:using color image by based on histogram mapping and hierarchical migration of colorizing grayscale image Hist algorithm to each frame of a video to color. In order to enhance the color effect, we in the previous Hist algorithm based. The single color source image using image retrieval techniques, for every frame of the black and white video image to find a source color image, so as to establish a source color image database, procedure calls, to achieve a frame color. The color video, which is produced by experiment, is bright, and it meets the requirement of high quality visual sense.The improved algorithm makes the video with high quality, its color effect is better, can meet people for the pursuit of high-definition, high fidelity visual effect.