基于立体靶标的摄像机标定方法

为获取视觉测量系统中二维图像到三维空间位置的变换关系,提出一种基于立体靶标的摄像机标定方法.针对无畸变小孔成像模型,使用最小二乘法求解初始投影矩阵后通过LM准则对其优化;根据多张图像对应的投影矩阵,求解摄像机内参数及各相应外参数;引入二阶径向畸变模型,建立理想图像坐标和实际图像坐标间的方程求解初始畸变系数;使用LM准则...     

过渡金属硫族化物纳米片的制备与生物应用

过渡金属硫族化物（TMDCs）是一类类石墨烯材料，具有高近红外吸收率，因此常被用作肿瘤光热治疗（PTT）过程中的光热剂以及光声成像（PAI）中的造影剂.TMDCs大多数情况下以二维纳米片的形式存在，具有更大的比表面积和更多的活性位点，可以通过负载不同功能的纳米小颗粒、药物小分子或生物大分子来赋予材料更多的可能性.文章主要介绍了TMDCs的合成与修饰，总结了常用的几种合成方法及其优缺点，以及该纳米材料在肿瘤诊疗中的一些应用.     

Iron manganese silicate incorporated bioactive hydrogels for therapy of skin tumor

There is clinical need to develop a multifunctional composite hydrogel for effectively removing residual tumor tissue and promoting wound healing after surgical resection of skin tumors. Herein, an iron manganese silicate (FeMn(SiO₄))-incorporated bioactive hydrogel for photothermal therapy of skin tumor cells has been successfully designed in the present study. The synthesized FeMn(SiO₄) (FMS) possessed a hollow sphere structure with rough surface, showing favorable photothermal effect. By incorporating FMS into the sodium alginate (SA) hydrogel, the prepared composite hydrogel (FMS/SA) exhibited the function of eliminating skin tumor cells in vitro by photothermal therapy (PTT). Moreover, attributed to the released bioactive ions (e.g., Fe, Mn and Si ions) from FMS, the FMS/SA composite hydrogel presented desirable biocompatibility, which is expected to benefit for skin wound healing of patients after skin tumor resection. Overall, the FMS/SA composite hydrogel has potential application in skin tumor therapy and wound healing, providing an effective and feasible strategy for the development of a comprehensive therapy for skin tumor after surgery.     

用电荷耦合器件观察小孔径密闭容器内图像的研究

本文介绍了一种利用电荷耦合器件和非球面透镜制作探头来观测小孔径密闭容器内图像的方法 ,以及用 Borland C 创建视频窗口来处理数据 .