摘要
在用岩心扫描仪进行高分辨率的图像采集时,对于表面起伏程度较大的岩心,一般要在不同物距上进行多次扫描,然后将图像进行融合,但由于多物距图像之间存在空间上的偏移和伸缩,所以必须先进行图像配准。针对此问题,研究了基于岩心扫描仪的多物距岩心图像的特点,并根据常见的剖面岩心和柱面岩心各自的特点采用了不同的配准策略。对剖面岩心采用基于仿射变换的配准方法,对柱面岩心采用基于空间变换的配准方法,配准效果较好,图像不存在扭曲和变形。
In capturing high resolution image by core scanner, it generally needed to scan at different distances for the core with greatly undulate surface and then fuse these images. But there was spatially offset and stretching between the ima- ges, so it must first conduct image registration. For this problem, the characteristics of multi-distance core image based on core scanner was analyzed, and different registration policies were used according to their own characteristics of the common cross-sectional core and cylinder core. A registration method based on affine transformation was used for the cross-section core, and for the cylindrical core, a method based on spatial transformation was adopted. The registration effect was better, and the image did not exist distortion.
出处
《计算机与数字工程》
2014年第3期503-507,共5页
Computer & Digital Engineering
关键词
图像配准
岩心扫描仪
多物距岩心图像
仿射变换
空间变换
image registration, core scanner, multi-distance image, affine transformation, spatial transformation
