A Image-Based Rendering Method For Chinese Ink Painting

Non-Photorealistic Rendering (NPR) has been a research hotspot of Computer Graphics since the medium term of 1990s. It injects aesthetic and stylized elements into computer graphics, and the goal of NPR is not to render objects realistically but creatively, such as in simulating various painting styles. By NPR, the artists can convey not only abstract information but also a certain artistic spirit through simulating various artistic styles .At present, many kinds of artistic style paintings, such as watercolor painting, pencil sketching, pen-and-ink illustration, canvass, et al., have been simulated successfully. Chinese ink painting is a kind of traditional art forms in China which has a history more than three thousand years. It adopts four main tools: the hairy brush, ink stick, paper and ink stone. In Chinese ink painting, the artist doesn't care about producing an exact or literal reproduction, but expressing only the essence of the considered objects. In other words, paintings typically consist of just a few simple strokes intended to convey the artist's deep feelings regarding the painted object. Simplicity is therefore a key ingredient. And feelings are expressed by the speed, placement, pressure, and movement of the brush, as well as the resultant degree of shading produced by the brush strokes. To simulate Chinese ink painting is not only to inherit our excellent traditional culture, but also to develop a new NPR technology.The simulation of Chinese ink painting has gone through a course from simplicity to complexity, and now we can use the pen input devices to create Chinese ink paintings on the computer in real-time. However, all the systems ask for the users who wish to draw a satisfied picture with some certain painting skills. Without background experience about painting, this paper presents a system for user, who can convert a color image to a picture with Chinese ink painting effect automatically.As we known, ink is an important pigment to paint a Chinese ink painting, and the various gray effects on the painting are produced by ink mixed with water. In addition, the ink diffusion along the stoke edges is a very important aspect of Chinese ink painting. In order to realize the effects described above, we present a painting method based on an input color image. At first, we use mean shift to filter and segment the image, and after we change the image to gray scale, the similar gray effect of an ink painting is shown Then, we can detect the segmented regions' edges,...