基于空间填充曲线走向的线条图像生成方法研究

Study on Generation of Line-Art Image with the Directions of the Lines Based on Space Filling Curve

以线条为微观图案而线条宽度与图像灰度值相关的图像,通常采用的线条走向较为单一。为使线条走向富有变化,采用Hilbert空间填充曲线控制线条的走向,并根据图像在微观位置上的像素灰度值设置线条的宽度,用PostScript语言编程生成线条图像。生成的线条图像在宏观上符合原图像的灰度变化,而微观上具有某种程度的"置乱"的线条图案效果。

The directions of the lines of line-art image which is with micro linear pattern and the line width corresponds to the gray level of the original image are usually identical. In order to make the directions of the lines have more varieties, Hilbert curve （belongs to Space Filling Curves） is applied to control the directions of the lines in the image. The line width is also correlative to the gray level of the original image. The generated line-art image is programmed with PostScript language. Macroscopically, the gray level of the generated line-art image accords with the original image, while to some extent the line-art image includes scrambled line-pattern.