关键词: 非真实感渲染, 蜡笔画, 区域均值漂移, 噪声, 纹理合成

Abstract: By analyzing the artistic features and structure texture of real crayon，and simulating the color and texture features of pastel，a new automatic algorithm for rendering crayon style paintings is proposed in the paper.In this algorithm，the color style of input drawing is changed with region-based mean shift filtering.Moreover，based on the conversion of the image color，a noise texture method is proposed，drawing texture rendering for color and contour of the image is realized respectively，so that it can achieve the purpose of crayon drawing style rendering with computer aided design.The algorithm can produce a result as similar as which is hand-painted，and this method is suitable for education，comic illustrations，entertainment and other application fields.

Key words: non-photorealistic rendering, pastels, region-based mean shift, noise, texture synthesis