基于三维扫描仪的弹头图像预处理研究

利用三维激光彩色扫描仪，可以获得弹头的表面立体和色彩信息，进而提取弹头痕迹特征，可以进行弹痕识别或弹痕分类。为了保证弹头痕迹特征提取的可靠性，必须对获取的弹头图像进行预处理，以减少噪声或其他干扰。本文讨论了弹头图像的增强、边缘检测和二值化，细化处理和去噪等一系列预处理方法。预处理后的图像与原始图像比较起来，有效地剔除了噪声，保留并恢复了弹头痕迹。

A Research for Bullet Image Pre-processing Based on 3-D Laser Color Scanner

Based on the functions and characters of the 3 - D Laser Color Scanner （3DLCS） ,the bullet 3 - D marks information is picked up. Using the feature of bullet marks, we can do automatic bullet marks detecting or bullet classifying. To ensure the reliability of the feature extraction of bullet marks, bullet image pre - processing must be done to reduce image noise and other disturbances. In this paper, we do pre - processing to the bullet unwrapped image, such as image enhancement, edge detecting, binarization, thinning and denoising. Comparing the image after pre - processing with the original image, we successfully obtain an image with clear striations and low noises.