Dynamic data updating algorithm for image superresolution reconstruction

A dynamic data updating algorithm for image superesolution is proposed. On the basis of Delaunay triangulation and its local updating property, this algorithm can update the changed region directly under the circumstances that only a part of the source images has been changed. For its high efficiency and adaptability, this algorithm can serve as a fast algorithm for image superesolution reconstruction.     

一种利用TM影像自动提取细小水体的方法

提出一种利用TM影像自动提取山区细小水体的多波段谱间关系改进方法。该方法在典型谱间关系法的基础上,针对水体与阴影在蓝绿光波段亮度值降低速率差异较大的特征,基于差值运算,构建了新的多波段谱间关系水体提取模型。首先利用该模型将水体从其他地物及阴影中分离出来,然后基于数学形态学膨胀滤波算法进行空洞填充和短线连接,最后通过图像细化算法实现目标的细化。经过实验比较表明,该方法克服了许多水体提取模型只能有效提取较大面积水体的缺点,除了能够对山区的细小水体进行高精度自动提取外,还能够有效地去除阴影等干扰信息。