苗绣艺术风格针迹模拟研究

Study on Stitching Simulation of the Miao Embroidery Art Style

非真实感绘制(NPR)也称艺术化渲染,主要用于模拟艺术化的绘制风格。随着图像处理技术的不断发展,研究者已经对中国特有的中国水墨画、烙画、云南重彩画等艺术作品进行了模拟,目前对苗族刺绣的数字化模拟研究还不多见。苗族刺绣也称苗绣,经国务院批准列入我国第一批国家级非物质文化遗产名录,是我国装饰艺术园地里的一朵奇葩。以苗绣为研究对象,根据真实苗绣艺术作品特点,提出了一种多角度针迹的苗绣艺术风格绘制方法。首先,针对苗绣图案构图手法夸张、层次分明的特点,将目标图像灰度处理,采用多阈值处理图像的方法分割出多幅刺绣图像;然后采用形态学方法消除杂散点、填充空洞点并平滑图案边缘,获得圆润自然、紧凑饱满的特征图案;接着,使用一种基于图像矩阵空间变换和添加纵向纹理的针迹生成算法使每一幅刺绣图像生成不同角度的苗绣针迹纹理;再用图像线性组合的方法将多幅苗绣针迹纹理图像合成为纹理图;最后用Alpha透明度混合算法将苗绣纹理图和目标图像叠加,获得苗绣图案设色对比强烈的艺术特征,产生效果图像。实验证明,该方法能够模拟出真实苗绣艺术作品的多角度针迹纹理效果。

Non-realistic rendering (NPR) also known as artistic rendering,is mainly used to simulate artistic rendering style.With the continuous development of image processing technology,researchers have simulated the unique Chinese ink painting,pyrography,Yunnan heavy color painting and other art works in China.At present,digital simulation of the Miao embroidery is still in need.The Miao embroidery has already been approved by the state council to be included in the first batch of China’s national intangible cultural heritage list.Taking the Miao embroidery as the research object,this paper puts forward a painting method of the Miao embroidery artistic style with multi-angle stitches according to the characteristics of real the Miao embroidery artistic works.Firstly,aiming at the characteristics of exaggerated and clear composition of the Miao embroidery pattern,the gray level of the target image is processed,and multiple embroidery images are segmented by multi-threshold image processing method.Then,the morphological method is used to eliminate the spurious points,fill the void points and smooth the edges of the pattern.After that,a stitch generation algorithm based on spatial transformation of image matrix and adding longitudinal texture is used to generate stitch texture of the Miao embroidery at different angles for each embroidery image.By using the method of linear combination,the texture images of the Miao embroidery stitches are synthesized into texture images.Finally,the texture map and the target image of the Miao embroidery are superimposed by Alpha transparency hybrid algorithm to obtain the artistic features of strong color contrast of the Miao embroidery pattern and produce the effect image.Experiments show that this method can simulate the multi-angle stitch texture effect of the real Miao embroidery works.