本课题针对活立木的多种图像信息进行研究，建立一个可以与卫星图像超链接的包含树种、树龄、密度、含水率、缺陷和三维结构等因素组成的活立木信息平台。由卫星图像确定研究区域，利用三维激光扫描仪对区域内活立木进行扫描，获取图像信息，经过变换处理后实现对活立木的三维重建。采用便携式X射线设备对活立木的物理特性进行检测，通过对X射线图像分析与处理，根据图像灰度值变化研究活立木的密度、含水率及其随气候的变化规律，应用多重分形频谱理论检测活立木腐朽、裂纹等内部缺陷，统计缺陷种类及数量。用高清图像记录仪采集区域内不同树种的树皮和树叶等纹理图像信息，用分形图像处理方法实现对树木种类的识别。研究活立木三维重建图像与实体的比例关系，计算活立木胸径单位时间内的变化，从而估测活立木生长量的变化。最终建立这一区域内活立木物理特征信息平台，为天然林保护工程提供强有力的技术支撑。

The main research objects on this topic are multiple image information of standing timber,and set up a hyperlink information platform with satellite image which contains species, age, density, moisture content, three-dimensional structure, et al. The study area was determined by the satellite image. Utilize terrestrial three-dimensional laser scanner combined image processing technology for standing timber image three-dimensional reconstruction. Test every standing timber by using X-ray machine. Estimate density and moisture content and its changing with the climate according to the image grey value change. Applying multifractal spectrum theory for standing timber defects detection. Count the amount and type of defects. Collect the leaf and bark texture information image of different tree species by using high-definition image recorder, and realize the tree species pattern recognition by fractal image processing. Establish the measuring scale of three-dimensional reconstruction image and standing timber. Calculate standing timber DBH change over time, thereby calculating the change of wood increment. Finally establish the physical characteristics information platform in this area and provide strong technical support for natural forest protection project.