Aiming at problem that pharmaceutical companies use human eye to identify tablet surface defects which cause visual fatigue affected by light intensity

undetected and inefficient problems exist

use machine vision technology for tablet image pre-processing

tablet defect detection and classification of different color processing algorithms and processing; on this basis

the least squares solution of inverse problems for the use of algorithms to determine the physical location of the defect tablets

3 DOF Delta robot control pills sort of defect. By testing

the system has high sorting success rate

and easy to implement

and meet design requirements.