Development of Image Measurement Methods for Maxillo Facial Surgeries

本课题主要包括以下三个方面的内容：1)立体图像的颅骨形状测量我们研制了一种立体视觉测量颅骨形状的实验装置，并利用该装置评价了该方法在外科手术中的应用效果。结果表明，该方法测量精度高，但测量过程简单，处理时间短。我们正计划在下一步改进这些缺陷。2)X射线立体图像的3D测量：本主题旨在建立一种简单且廉价的方法，通过将立体视觉技术应用于X射线图像来测量人体的3D位置。我们开发了参考物，它是一个箱形线框，给出了X射线源位置和用于测量的参考坐标。使用参考对象，可以足够精确地测量3D位置。我们已经提交了该方法的专利。3)使用数码相机测量肤色我们开发了一种用廉价的数码相机定量测量颜色的方法。本研究的主题是开发一种取消普通相机所具有的色彩校正过程的方法。围绕这一主题，我们提交了几项关于多光谱相机的滤色器结构的专利。

This research project consists of the following three themes :1) Shape Measurement of the Skull by Stereo ImagesWe developed an experimental device to measure shape of the skull using stereo vision technique, and evaluated the effectiveness of the method for use in surgery using the device. It was found that the method gave results accurate enough to meet the requirements, but simpler measurement process and shorter processing time were desired. We are planning to improve these defects as the next step.2) 3D measurement by X-ray stereo images :This theme aimed at establishing an easy and inexpensive method whereby 3D positions in a human body were measured by applying stereo vision technique to X-ray images. We have developed the reference object, which is a box shape wire frame and gives X-ray source positions and a reference coordinate for measurements. Using the reference object, 3D positions could be measured with enough accuracy. We have submitted patents of the method.3) Skin Color Measurement Using Digital Color CameraWe have developed a method to measure colors quantitatively by an inexpensive digital camera. The point of this research theme is to have developed a means to cancel color correction process that an ordinary camera has. Relating this theme, we submitted several patents regarding color filter constructions for multi-spectral cameras.