人工智能使用计算机视觉识别枪声入口
Caio Henrique Pinke Rodrigues1, Milena Dantas da Cruz Sousa1, Michele Avila Dos Santos2
1National Institute of Forensic Science and Technology (INCT Forense), Ribeirão Preto, São Paulo, Brazil; Department of Chemistry, Faculty of Philosophy, Sciences and Letters of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
Forensic science international
|August 23, 2025
概括
这项研究证明了计算机视觉
科学领域:
- 法医科学
- 计算机视觉
- 机器学习
背景情况:
- 枪支相关的犯罪在全球范围内不断增加.
- 鉴定枪支证据对于法医分析来说是一个挑战.
- 证据检查对于犯罪现场重建至关重要.
研究的目的:
- 开发一个计算机视觉系统来识别T恤上的枪支口径.
- 应用深度学习模型进行自动化法医证据分析.
- 为了区分不同口径的枪支的入口标记.
主要方法:
- 使用YOLOv11 (超分析) 算法,一个卷积神经网络.
- 收集了来自38口径手枪,9毫米和357口径手枪的110张T恤图片.
- 使用数据增强来扩展数据集到436张图像用于培训和验证.
主要成果:
- YOLOv11模型的性能令人满意,分类参数平均超过90%.
- 混矩阵分析证实了该模型在预测中的强度和稳定性.
- 系统成功地分类了不同口径的枪支.
结论:
- 计算机视觉提供了一个有前途的,
- 这项技术可以为法医调查提供补充数据.
- 人工智能在法医科学领域的进一步发展对于推进刑事调查至关重要.
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Vision
Vision is the result of light being detected and transduced into neural signals by the retina of the eye. This information is then further analyzed and interpreted by the brain. First, light enters the front of the eye and is focused by the cornea and lens onto the retina—a thin sheet of neural tissue lining the back of the eye. Because of refraction through the convex lens of the eye, images are projected onto the retina upside-down and reversed.
Visual System
Light enters the eye through the cornea, a transparent, dome-shaped surface covering the surface of the eyeball that helps to direct and focus incoming light. This light is then channeled toward the pupil, an adjustable opening whose size is controlled by the iris. The iris, a pigmented muscle, regulates the amount of light entering the eye by contracting or dilating the pupil, thereby ensuring optimal light levels for clear vision.
Once through the pupil, the light passes through the lens, a...
Once through the pupil, the light passes through the lens, a...
