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Multimodal and multiview wound monitoring with mobile devices
(MDPI, 2021-10-01)
Along with geometric and color indicators, thermography is another valuable source of information for wound monitoring. The interaction of geometry with thermography can provide predictive indicators of wound evolution; however, existing processes are focused on the use of high-cost devices with a static configuration, which restricts the scanning of large surfaces. In this study, we propose the use of commercial devices, such as mobile devices and portable thermography, to integrate information from different wavelengths onto the surface of a 3D model. A handheld acquisition is proposed in which color images are used to create a 3D model by using Structure from Motion (SfM), and thermography is incorporated into the 3D surface through a pose estimation refinement based on optimizing the temperature correlation between multiple views. Thermal and color 3D models were successfully created for six patients with multiple views from a low-cost commercial device. The results show the successful application of the proposed methodology where thermal mapping on 3D models is not limited in the scanning area and can provide consistent information between multiple thermal camera views. Further work will focus on studying the quantitative metrics obtained by the multi-view 3D models created with the proposed methodology.
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Prevention and Promotion of Wound Health Through the Ambulatory Use of Portable Thermography. Pilot Study
(Sociedad Espanola de Cirugia Plastica Reparadora y Estetica (SECPRE), 2023-10-01)
Background and objective. Chronic wounds require regular monitoring for evaluation and prevention of complications. Such assessment remains subjective, prone to error, and it is often a time-consuming and costly process for patients and public health. We propose to use three-dimensional thermographic models that can complement wound assessment. Methods. A pilot study in 6 participants where three-dimensional thermographic models were created from images obtained with low-cost portable devices. Results. The results show patterns of temperature differences that seem to be related to the behavior of the wound area. Conclusions. We observe its usefulness in providing a low-cost visualization tool and objective quantitative and qualitative indicators of the evolution of wounds, as well as the possibility of monitoring in remote areas where there is a lack of specialists, since by providing metrics, it would help in their monitoring and evaluation.
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