抖动与有序抖动
我了解抖动的工作原理等,但是抖动与有序抖动之间有什么区别?
还有人能给我指出一些好的资源吗?
I understand how dithering works etc, but what is the differance between dithering vs ordered dithering?
Also can anyone point me to some good resources?
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摘自此处:
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Taken from here:
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抖动与有序抖动之间的主要区别在于量化误差传播的方式。
通常,阈值分布均匀,结果图像尽可能平滑。
例如,如果高值阈值集中在图案中心周围,则效果为“半色调”
总之,值得一提的是,有序抖动非常简单,而且快得多。它早在 90 年代的 Windows 95/98 中就已使用,当时显示器的分辨率为 256 色或 16 位色。
您可以从 此处获取源代码和演示项目
The main difference between dither vs ordered dither is the way of the quantisation error spreading.
Usually, the thresholds are evenly distributed and the result image is as smooth as possible.
For example, if the high-value thresholds are concentrated around the center of the pattern, the effect is "halftoning"
In conclusion it is worth to mention that Ordered dither is far simple and much faster. It was used back in the '90s in Windows 95/98 when the monitors' resolution were 256 colors or 16bit colors.
You can get source code and demo project from here