1. Digitization of natural objects with micro CT and photographs
- Author
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Kenji Kohiyama, Takashi Ijiri, Akira Hirabayashi, Hideki Todo, and Yoshinori Dobashi
- Subjects
0106 biological sciences ,business.product_category ,Computer science ,Physiology ,lcsh:Medicine ,Digital Cameras ,Computed tomography ,Plant Science ,01 natural sciences ,Diagnostic Radiology ,Image Processing, Computer-Assisted ,Photography ,Medicine and Health Sciences ,Computer vision ,lcsh:Science ,Tomography ,Digitization ,Digital camera ,Multidisciplinary ,medicine.diagnostic_test ,Ecology ,Radiology and Imaging ,Plant Anatomy ,Eukaryota ,Cameras ,Climbing ,Bone Imaging ,Insects ,Optical Equipment ,Plant-Insect Interactions ,Engineering and Technology ,Algorithms ,Research Article ,Arthropoda ,Imaging Techniques ,010607 zoology ,ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION ,Equipment ,Neuroimaging ,Flowers ,Research and Analysis Methods ,010603 evolutionary biology ,Texture (geology) ,Imaging, Three-Dimensional ,Diagnostic Medicine ,Plant-Animal Interactions ,medicine ,Humans ,Animals ,Micro ct ,ComputingMethodologies_COMPUTERGRAPHICS ,business.industry ,Biological Locomotion ,Plant Ecology ,lcsh:R ,Ecology and Environmental Sciences ,Organisms ,Reproducibility of Results ,Biology and Life Sciences ,Invertebrates ,Computed Axial Tomography ,X-Ray Radiography ,lcsh:Q ,Artificial intelligence ,business ,Tomography, X-Ray Computed ,Volume (compression) ,Neuroscience - Abstract
In this paper, we present a three-dimensional (3D) digitization technique for natural objects, such as insects and plants. The key idea is to combine X-ray computed tomography (CT) and photographs to obtain both complicated 3D shapes and surface textures of target specimens. We measure a specimen by using an X-ray CT device and a digital camera to obtain a CT volumetric image (volume) and multiple photographs. We then reconstruct a 3D model by segmenting the CT volume and generate a texture by projecting the photographs onto the model. To achieve this reconstruction, we introduce a technique for estimating a camera position for each photograph. We also present techniques for merging multiple textures generated from multiple photographs and recovering missing texture areas caused by occlusion. We illustrate the feasibility of our 3D digitization technique by digitizing 3D textured models of insects and flowers. The combination of X-ray CT and a digital camera makes it possible to successfully digitize specimens with complicated 3D structures accurately and allows us to browse both surface colors and internal structures.
- Published
- 2018