While detecting the property of seed metering device based on computer vision

adjacent objectives are possible to be covered each other

and faster detecting speed is required. In this paper

by analyzing the feature of camera and flat mirror

a calibration method of camera system that is only composed of a single camera and a flat mirror is proposed

and the calibration model of this camera system is expounded in detail. Therefore

the camera system that is only composed of a single camera and a flat mirror can not only raise speed of grabbing image but also spare memory of computer so that the detecting speed is raised. Meanwhile

applying the map relation between image points and special points

an algorithm of reconstructing special point is also given. The calibration method is testified on the experimental table of seed metering device

results show that not only this system can detect overlapping and lost of seeds

but also error is less than 1mm

and the adhesive tape that is used in detection is completely replaced.