During the automatic reconstruction of panoramic images, the effect of dental arch curve fitting will affect the integrity of the content of the panoramic image. Metal implants in the patient's mouth usually lead to a decrease in the contrast of the panoramic image, which affects the doctor's diagnosis. In this paper, an automatic oral panoramic image reconstruction method was proposed. By calculating key image areas and image extraction fusion algorithms, the dental arch curve could be automatically detected and adjusted on a small number of images, and the intensity distribution of teeth, bone tissue and metal implants on the image could be adjusted to reduce the impact of metal on other tissues, to generate high-quality panoramic images. The method was tested on 50 cases of cone beam computed tomography (CBCT) data with good results, which can effectively improve the quality of panoramic images.
在全景图像的自动重建过程中，牙弓曲线拟合效果会影响全景图像内容的完整性，患者口腔中的金属植入物通常会导致全景图像对比度降低，影响医生的诊断。本文提出了一种自动口腔全景图像重建方法。通过计算关键图像区域和图像提取融合算法，可以在少量的图像上自动检测和调整牙弓曲线，并调整牙齿、骨组织和金属植入物在图像上的强度分布，减少金属对其他组织的影响，生成高质量的全景图像。本方法在50例锥形束计算机断层扫描（CBCT）数据上进行测试，均能取得较好的结果，可以有效提高全景图像的质量。.
Keywords: Cone beam computed tomography; Dental arch inspection; Image enhancement; Panoramic image.