The paper put forward two coal yard reserves measurement technical schemes based on passive
stereovision, which adopt travel crane plane scanning structure to measure coal stack cubage accurately
with high precision space distance measuring technology and large size image splicing technology. The
hardware configuration and measurement method of the system designed in this paper are simple. What is
more, the system can improve measurement accurate, predigest operation flow and reduce measurement
cost. The system can satisfy the requirements of coal reserve quantity measurement in power plant that the
measurement must not affect the coal using on-the-spot and other production activities in coal stack field.