Object Detection Approaches to Identifying Hand Images with High Forensic Values

• URL: http://arxiv.org/abs/2412.16431v1
• Date: Sat, 21 Dec 2024 01:37:54 GMT
• Title: Object Detection Approaches to Identifying Hand Images with High Forensic Values
• Authors: Thanh Thi Nguyen, Campbell Wilson, Imad Khan, Janis Dalins,
• Abstract summary: This paper compares various machine learning approaches to hand detection and presents the application results. We fine-tune YOLOv8 and vision transformer-based object detection models on four hand image datasets.
• Score: 1.9598097298813262
• License:
• Abstract: Forensic science plays a crucial role in legal investigations, and the use of advanced technologies, such as object detection based on machine learning methods, can enhance the efficiency and accuracy of forensic analysis. Human hands are unique and can leave distinct patterns, marks, or prints that can be utilized for forensic examinations. This paper compares various machine learning approaches to hand detection and presents the application results of employing the best-performing model to identify images of significant importance in forensic contexts. We fine-tune YOLOv8 and vision transformer-based object detection models on four hand image datasets, including the 11k hands dataset with our own bounding boxes annotated by a semi-automatic approach. Two YOLOv8 variants, i.e., YOLOv8 nano (YOLOv8n) and YOLOv8 extra-large (YOLOv8x), and two vision transformer variants, i.e., DEtection TRansformer (DETR) and Detection Transformers with Assignment (DETA), are employed for the experiments. Experimental results demonstrate that the YOLOv8 models outperform DETR and DETA on all datasets. The experiments also show that YOLOv8 approaches result in superior performance compared with existing hand detection methods, which were based on YOLOv3 and YOLOv4 models. Applications of our fine-tuned YOLOv8 models for identifying hand images (or frames in a video) with high forensic values produce excellent results, significantly reducing the time required by forensic experts. This implies that our approaches can be implemented effectively for real-world applications in forensics or related fields.

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