Based on the correlation of tobacco primary-color signals, the optimization of tobacco signalthreshold can be achieved by means of displacement, rotation, and two-dimensional fitting.
基于烟叶三基色信号存在的相关特性，采用二维相关拟合以及平移旋转方法，实现了烟叶信号的阈值优化。
2
Npswarn is the threshold that is used to signal the processes when space is getting low.
Npswarn是当空间变得较低时用于通知进程的阈值。
3
Infrared radiation heats up the pit membrane tissue, and TRPA1 channels open when a threshold temperature is reached, allowing ions to flow into the nerve cells and triggering an electrical signal.