公开(公告)号：US20060256124A1

公开(公告)日：2006-11-16

申请号：US11125262

申请日：2005-05-10

申请人： Chung-Chieh Kuo ,  Yih-Feng Chen ,  Yinqing Zhao ,  Lei Huang ,  Meng-Yun Yin

发明人： Chung-Chieh Kuo ,  Yih-Feng Chen ,  Yinqing Zhao ,  Lei Huang ,  Meng-Yun Yin

IPC分类号： G09G5/02

CPC分类号： H04N1/4051

摘要： A line-based digital halftoning technique uses both a wavelet transform and multi-scale dot assignment concepts in which the dots are assigned in a top-down fashion and error diffusion is also adopted to fine tune the halftoned images and compensate for errors generated by the implicit quantization. 1-D processing makes the implementation easy while the top-down multiscale dot assignment can produce a multi-resolution halftoned image, which provides a good approximation of the original in multiple scales.

公开(公告)号：US07580074B2

公开(公告)日：2009-08-25

申请号：US11125262

申请日：2005-05-10

申请人： Chung-Chieh Kuo ,  Yih-Feng Chen ,  Yinqing Zhao ,  Lei Huang ,  Meng-Yun Yin

发明人： Chung-Chieh Kuo ,  Yih-Feng Chen ,  Yinqing Zhao ,  Lei Huang ,  Meng-Yun Yin

IPC分类号： H04N5/222

CPC分类号： H04N1/4051

摘要： A line-based digital halftoning technique uses both a wavelet transform and multi-scale dot assignment concepts in which the dots are assigned in a top-down fashion and error diffusion is also adopted to fine tune the halftoned images and compensate for errors generated by the implicit quantization. 1-D processing makes the implementation easy while the top-down multiscale dot assignment can produce a multi-resolution halftoned image, which provides a good approximation of the original in multiple scales.

摘要翻译： 基于线的数字半色调技术使用小波变换和多尺度点分配概念，其中以自顶向下的方式分配点，并且还采用误差扩散来微调半色调图像并补偿由 隐式量化。 1-D处理使得实现容易，而自顶向下多尺度点分配可以产生多分辨率半色调图像，其提供了多尺度中的原始图像的良好近似。