I can now recognize what are widely described as the various "colors" of noise: bluenoise is a muted, more summery version of white, while brown noise is bassy and deep.
The green noise halftoning have these bluenoise advantages, besides, it can be used in the harder condition, so the green noise have more halftone robustness than the bluenoise.
绿噪声半调技术具有蓝噪声的优点,同时在算法的健壮性方面有很大的提高。
3
This hardly ever happens out of the blue: there are usually warning signs such as noise, vibration or heat.