脉搏波的多处采集点的波形，可用来进行对比，或是进行血管建模，很适合初学者-The various collection points of pulse wave waveform, can be used to compare, or modeling of blood vessels, it is suitable for beginners

Code to Eye s blood vessel detection, with this code you will obtain a new image but only with de vessels, you can use it like a mask

Quantitative Measurements of Blood Vessels on Human Extremities by Near-Infrared (NIR) Technique