Requirements on the data structure for storing data from measurements of the data acquisition processes for creation of 3D digital model of building using photogrammetry

Photogrammetry is one of the optical methods that can be used to create a 3D digital model. It is becoming popular for the creation of 3D models of existing buildings as an effective method. Equipment for data acquisition for photogrammetry is significantly cheaper than equipment for 3D laser scanning. However, the process of data acquisition for photogrammetry can be a time-consuming process that may be necessary to measure for many reasons. Among these reasons belong the cost estimation or potential process optimization. The process of data acquisition for the creation of 3D models of an existing building using photogrammetry can be decomposed into many particular activities. Some of the activities are obvious, such as taking photos using a camera or taking photos using a drone, and some of the activities are less obvious and become evident after the analysis that requires observation of more instances of the data acquisition process. Each particular activity of the data acquisition process requires time resources, and it can be expected that the amount of time required can be influenced by many aspects. These can be characteristics of the building of which the 3D model will be created, the experience of the person who performs the activity, weather conditions, etc. To reveal the influences on the time resource requirements for the particular activities of the data acquisition process, several instances of the process activities must be measured, and the data of these measurements must be stored for further analyses. To store measured data about particular activities of the data acquisition process, the data structure must be designed. This data structure must be able to store the measured required time of particular data acquisition activities and also the aspects that may influence the time resource requirements for particular data acquisition activities. This paper describes the requirements for this data structure.