基于互信息方法的医学图像检索

提出了一种适用于医学图像检索的新方法，即最大互信息方法，使用该方法对超声图像库进行了检索实验，验证了基于最大互信息方法具有良好的检索性能；该方法既能满足位置不变性，旋转不变性和比例不变性，又能避免进行图像分割，从而避免了因图像分割引起的复杂计算，该方法还具有检索速度不受数据库中图像数目影响等优点，也适用于对一般图像进行相似性检索。

MEDICAL IMAGE RETRIEVAL BASED ON MUTUAL INFORMATION

A new method was presented to retrieve medical image, which is based on mutual information method. A database of ultrasonic images was retrieved by the method. The result shows that this method not only has the features of translation invarant, rotation invariant and scale invariant, but also avoids image segmentation which may lead to a complex calculation. The method has the advantage that the speed of retrieval will not get slow with the increase of the number of images. This new method can also be used to retrieve similar non medical image.