Analysis of Plane Position for Crane Load with a Single Image

Abstract

Material transportation status by crane (loading/ unloading position, transportation distance/ time, and material weight) is considered as one of the indicators that shows the construction process of construction site. The transportation time and material weight can be obtained as numerical data from the chronological record of the weight scale hung on the crane hook. It is necessary to acquire the planar position and transportation distance of the transported object. Photogrammetry technology can be used to acquire these information by analyzing images taken from multiple directions. However, it is often difficult to obtain images from ideal positions and angles due to the obstacles existing at construction sites such as site boundaries, undulations, existing structures, etc.

Therefore, in this paper, we propose a method to obtain the plane position of transported object by using single image taken one direction by focusing on the peculiarities of the transportation mechanism of stationary horizontal jib crane.