Comprehensive Halftoning of 3D Scenes
Comprehensive Halftoning of 3D Scenes
复制标题
3D 场景的全面半色调
DOI：
10.1111/1467-8659.00323
复制
发表时间：
1999
影响因子：
2.5
通讯作者：
J. Buchanan
中科院分区：
文献类型：
--
作者：
O. Veryovka;J. Buchanan
在二进制输出硬件上显示图像需要半色调步骤。传统的半色调算法独立于图像内容来近似图像值，并且经常引入模糊精细细节的人工纹理。本研究的目的是适应半色调技术的三维场景信息，从而提高计算机生成的三维场景的显示。我们的方法是基于半色调纹理的有序抖动和误差扩散技术相结合的控制。我们扩展我们以前的工作，使用户能够指定的形状，规模，方向和对比度的半色调纹理使用外部缓冲区。我们控制纹理形状构造一个抖动矩阵从任意的图像或程序纹理。纹理方向和尺度通过映射函数适应外部信息。纹理对比度和色调再现的准确性是不同的图像使用误差扩散过程。我们半色调的三维场景的图像，通过使用的几何形状，位置和照明信息来控制半色调纹理。因此，纹理提供视觉提示并且可以用于增强观看者对显示器的理解。
The display of images on binary output hardware requires a halftoning step. Conventional halftoning algorithms approximate image values independently from the image content and often introduce artificial texture that obscures fine details. The objective of this research is to adapt a halftoning technique to 3D scene information and thus to enhance the display of computer generated 3D scenes. Our approach is based on the control of halftoning texture by the combination of ordered dithering and error diffusion techniques. We extend our previous work and enable a user to specify the shape, scale, direction, and contrast of the halftoning texture using an external buffer. We control texture shape by constructing a dither matrix from an arbitrary image or a procedural texture. Texture direction and scale are adapted to the external information by the mapping function. Texture contrast and the accuracy of tone reproduction are varied across the image using the error diffusion process. We halftone images of 3D scenes by using the geometry, position, and illumination information to control the halftoning texture. Thus, the texture provides visual cues and can be used to enhance the viewer's comprehension of the display.