Tohoku University Technology: Image creation method in UAV survey: T22-281
Extracts ground surface conditions with high accuracy
Recently, drones (or UAVs) have been used as a platform for three-dimensional measurement using Structure from Motion(SfM). By using machine learning on the obtained image data, quantitative evaluation and grasping of topography and vegetation information have been attempted, but conventional methods have problems in simplicity and accuracy improvement. Therefore, the present invention provides a method for producing a composite image of the ground surface by which the utilization status of the ground surface such as vegetation can be easily grasped using height information obtained by using a drone. The composite image is highly versatile because it can be obtained as a three-channel RGB image. Moreover, it can be processed by any free software you want to use and the installation is not difficult. In terms of machine learning accuracy, the Sørensen–Dice coefficient for the comparison example in which the homestead woodlands was extracted using only ortho images was 0.64, while the Dice coefficient for the synthetic images was 0.80, showing an improvement in accuracy.
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The revenue generated from technology transfer is reinvested as new research funding for universities and researchers, and is utilized to create further research outcomes. To ensure the smooth operation of this cycle, known as the "Intellectual Creation Cycle," we will vigorously promote technology transfer. The types of seeds we handle include patents, know-how, databases, and programs. We have established a collaborative framework by signing basic technology transfer agreements with the following universities (as of June 1, 2025): Tohoku University, Hirosaki University, Iwate University, Akita University, Fukushima University, Yamagata University, Tohoku Gakuin University, Iwate Medical University, Fukushima Medical University, Aizu University, Miyagi University, Hokkaido University, Muroran Institute of Technology, and Showa Medical University.
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