Accuracy of 3-D Model Based on Point Cloud: A New Technology for Construction Progress Evaluation

Abstract—Construction industry is considered an important industry in Thailand. The construction project consists of many processes that have to be monitored. The construction progress monitoring and evaluating is one of the most important procedures among others. This research aims to propose the way to monitor the construction project progress using photogrammetry technology. Progress evaluation can be effectively and quickly verified and be able to provide stakeholders with an easy understanding of the project situation. The research used photos of the object with a box-shape to construct a 3-D model. The geometry of the object was measured manually by its width, height and length then compared to the values obtained from the 3-D model. An error of the model was evaluated in terms of Length, Area and Volume. The result of the study showed that error of the developed model in Length, Area and Volume are less than ±1%. This paper proved that 3-D construction model base on point cloud from construction site image can be used to evaluate construction progress with enough accuracy.