基于局部复杂度信息测度的冠脉造影图像分割

针对冠状动脉造影图像中血管与背景的对比度低以及背景复杂等问题,提出了一种基于局部复杂度信息测度的冠脉血管分割方法。通过对造影图像过渡区特征的分析,构造了局部复杂度信息测度作为特征参数,提取造影图像的过渡区。根据提取的过渡区直方图确定一个最佳分割阈值,提取冠脉血管。实验结果表明,本文方法在小血管的提取、连通性和有效性方面优于文中其他的血管分割方法,并对辅助医疗诊断及心血管三维重建具有一定价值。

数字图像传输中的比特率控制

从现有网络的实际出发 ,论述了压缩编码图像传输中比特率控制的要求以及影响比特率的因素 。

Fisher Information and Complexity Measure of Generalized Morse Potential Model

The spreading of the quantum-mechanical probability distribution density of the three-dimensional system is quantitatively determined by means of the local information-theoretic quantity of the Shannon information and information energy in both position and momentum spaces. The complexity measure which is equivalent to Cramer–Rao uncertainty product is determined. We have obtained the information content stored, the concentration of quantum system and complexity measure numerically for n = 0, 1, 2 and 3 respectively.