Creating a partial 3D model in selected biological areas using a small number of photographs

Abstract

Currently, we are registering a great boom in computer technology, which allows us to use ICT techniques and procedures even in those areas in which it was not common. One such area is the creation of partial or complete realistic 3D models of real bodies in biology - in our case, trees or wood. Their great advantage is that they can capture various cases of growth deformations, interesting shapes or atypical formations. Many are temporary and unstable. An example can be a wood rotting fungus. These can then be studied outside the place of their growth and at the same time preserved for future comparisons. This leads to another possibility of their use in the educational process. We must also point out that a real 3D model with preserved dimensional proportions and true colors is a much better solution for studying than a classic photograph. We use photogrammetry to create 3D models. Its great advantage is that the 3D model is created from a series of photos that capture the part of the real object from which we want to create a partial 3D model. A classic touchscreen mobile phone is enough to get these photos. However, many problems and complications are associated with the creation of 3D models. It is not always possible to get quality photos. This can be caused by e.g. height, terrain or other obstacles. To obtain the desired partial 3D model, it is ideal if several conditions are met when obtaining photos, such as overlapping photos, sharpness, color, visible texture, etc. But in real cases it is not always possible to achieve this and therefore in our contribution we focus on the subsequent processing by which we can achieve our goal - even under the aforementioned unfavorable conditions to create a 3D model.