A Proposal of image-based measurement instead of laser-based measurement for indoor application

Abstract

Measuring dimensions of indoor environment have an important role in construction, whether for calculation of work, or documentation purposes. Humans may introduce errors and make measuring real objects less accurate. Several methods have been developed to reduce this error and one of them is a non-contact measurement that executes according to guideline can minimize this error. Measurement using image-based measurement can reduce human involvement, where Total Station Theodolite (TST) is very dependent on its operator skill and involvement. This study aims to show the differences between image-based and laser-based measurements using TST in measuring the dimension of the indoor environment. Image-based measurement was obtained by taking photos of a few rooms and processed with an open-source software to produce a 3D model. This 3D model then measured to provide measurement for differences comparison. Laser-based measurement was obtained by hiring professional surveyor to measure the rooms with TST. Results from this study can be used as a reference in developing a new method to measure dimension in indoor application. Without hiring professional to measure using photogrammetry in this research, measurement using photogrammetry can get average differences of 0,2593% from measurement using TST.