公开(公告)号：US20100245927A1

公开(公告)日：2010-09-30

申请号：US12414635

申请日：2009-03-30

申请人： Wen-Chian Wong ,  Chen-Chung Chen

发明人： Wen-Chian Wong ,  Chen-Chung Chen

IPC分类号： H04N1/409

CPC分类号： H04N1/4051

摘要： A tone dependent green-noise error diffusion method includes setting a first threshold and a second threshold, and determining a two-level value of a color level of an input image according to the first threshold and the second threshold; subtracting the two-level value from the color level value to generate an error value; performing an error diffusion on the error value to generate an error diffusion accumulation value; adjusting the color level according to the error diffusion accumulation value; performing a hysteresis filtering on the two-level value to generate an output dependent feedback value; and adjusting the color level according to the output dependent feedback value.

摘要翻译： 音调相关的绿噪声误差扩散方法包括设置第一阈值和第二阈值，以及根据第一阈值和第二阈值确定输入图像的色彩电平的两电平值; 从颜色级别值减去两级值以生成错误值; 对误差值执行误差扩散以产生误差扩散积累值; 根据误差扩散积累值调整色阶; 对二电平值执行滞后滤波以产生依赖于输出的反馈值; 并根据输出相关反馈值调整色阶。

公开(公告)号：US08169665B2

公开(公告)日：2012-05-01

申请号：US12414635

申请日：2009-03-30

申请人： Wen-Chian Wong ,  Chen-Chung Chen

发明人： Wen-Chian Wong ,  Chen-Chung Chen

IPC分类号： H04N1/52 ,  H04N1/58 ,  G06T5/00

CPC分类号： H04N1/4051

摘要： A tone dependent green-noise error diffusion method includes setting a first threshold and a second threshold, and determining a two-level value of a color level of an input image according to the first threshold and the second threshold; subtracting the two-level value from the color level value to generate an error value; performing an error diffusion on the error value to generate an error diffusion accumulation value; adjusting the color level according to the error diffusion accumulation value; performing a hysteresis filtering on the two-level value to generate an output dependent feedback value; and adjusting the color level according to the output dependent feedback value.

摘要翻译： 音调相关的绿噪声误差扩散方法包括设置第一阈值和第二阈值，以及根据第一阈值和第二阈值确定输入图像的色彩电平的两电平值; 从颜色级别值减去两级值以生成错误值; 对误差值执行误差扩散以产生误差扩散积累值; 根据误差扩散积累值调整色阶; 对二电平值执行滞后滤波以产生依赖于输出的反馈值; 并根据输出相关反馈值调整色阶。