届 别 2012届
学 号
毕业设计（论文）
基于MATLAB的医学图像处理
姓 名 唐涛 系 别、 专 业 计算机科学系、通信工程专业 导 师 姓 名、职 称 朱卫平、副教授 完 成 时 间 2012年5月1日
目 录
摘 要 ................................................... I ABSTRACT ............................................... II 1 绪论 .................................................. 1 1.1 课题背景............................................. 1 1.2 本文研究目的和意义 ................................... 1 1.3本文主要研究工作 ..................................... 2 2 MATLAB技术 ............................................ 3 2.1 调用程序设计原理 ..................................... 3
2.2 调用MATLAB程序的实现 ............................................................................................................ 4
3 医学图像处理的具体过程 ................................. 9 3.1 图像旋转的MATLAB实现 ................................ 9 3.2 图像剪切的MATLAB实现 ............................... 10 3.3 图像负片效果的MATLAB实现 ........................... 11 3.4 灰度变换的MATLAB实现 ............................... 12 3.5 直方图均衡化的MATLAB实现 ........................... 14 3.6 锐化效果的MATLAB实现 ............................... 17 3.7 边缘检测效果的MATLAB的实现 ......................... 19 4 总结 ................................................. 23 参考文献 ............................................... 24
致 谢 .................................................. 25 附 录 .................................................. 26
摘 要
随着人民的生活水平不断提高,人们越来越关注自身健康,提早、准确地发现疾病并予以及时地治疗,不但可以挽回病人的生命、减轻病人痛苦,还可以减轻病人的经济负担。医学影像技术以高效、经济、无创等优点在医疗活动中得到广泛应用。医学图像已经成为现代医学不可或缺的一部分,它的质量直接关系到医生诊断和治疗的准确性。然而,有时获得的医学图像并不是很理想,不能很好地突出病灶部位的信息,这就容易造成医生的误诊或漏诊。因此,对医学图像进行适当的增强处理,使其更能清晰、准确地反映出病灶是非常必要的。本文首先详细描述了MATLAB对医学图像处理的工作原理,指出了各种图像处理的特点和适用范围,并对图像锐化处理进行了改进,使图像增强的效果更好。然后,用MATLAB对医学图像处理进行了调试运行。最后,对本课题的研究进行了总结和展望,指出了本课题的成果和不足,指明了改进的方向。医学图像经过图像处理以后,图像质量得到了改善,图像细节更加突出,减少了误诊和漏诊的概率。 关键词：MATLAB;医学图像处理;图像处理;图像增强
ABSTRACT
With the continuous improvement of people's living standards,
people are increasingly concerned about their of diseases and be timely treatment, can not only restore the patient's life, reduce patient pain, can also reduce the economic burden on the patient. Medical imaging technology widely used in medical activities to the advantages of efficient, economical, non-invasive. Medical images indispensable part of modern medicine, its quality is directly related to the accuracy of the doctor's diagnosis and treatment. However, sometimes the medical image is not ideal, can of the lesion site, which is likely to cause the doctor misdiagnosed. Therefore, the appropriate enhancement of medical images, to make it more clear and accurately reflect the lesion is very necessary.This article first detailed study of the medical image processing works, pointed out the characteristics and scope of the various image processing and image sharpening to improve, better image enhancement. Then, the medical image processing using MATLAB debugging run. Finally, research on this topic summary and outlook, and pointed out the achievements and shortcomings of this subject, and pointed out the direction of improvement. After the medical image after
image processing, image quality improved, more image detail, reducing the probability of misdiagnosis and missed diagnosis KEYWORDS:MATLAB;medical image processing;image processing;image enhancement