岩心图像采集中的失真研究与校正

Research and correction of distortion in core image acquisition

建立了岩心图像采集系统中摄像头成像的几何模型,并分析了采集头失真产生的原理,针对该系统存在的两种主要的几何失真提出了基于几何变换和线性补偿的校正方法,并推导出了坐标变换公式.实验表明:该校正方法能够对采集得到的岩心图像进行有效校正,满足后期处理分析对图像的要求,在工程上具有较高的实用价值.

This paper not only established a geometric model of camera imaging equipped with core image collection system, but also analyzed the principle of sampling head distortion. To eliminate the two main kinds of geometric distortion of this system, and deduced a transformation formula,this paper proposed one method which is based on geometric transformation and linear compensation. At the same time, experiments also show the method can collect the core images effectively, satisfy the post-processing analysis requirement of images, has higher practical value on project.