CAJ | 학술논문

提出了一种将计算全息技术与液晶空间光调制器相结合的CT图像三维重构与实时显示的方法。用计算全息技术对一系列CT图片进行三维信息融合，并根据CT图片数目的不同，制作了不同的计算全息图，基于CT图片本身是数字化二维图像的特点，采用了快速傅里叶变换算法。用液晶空间光调制器作为全息图显示载体，设计了CT图像三维实时显示系统，利用计算机控制实时输出不同的计算全息图到空间光调制器，通过光学再现获得不断变化的三维再现像，实现CT图像的三维实时显示。
제출료일충장계산전식기술여액정공간광조제기상결합적CT도상삼유중구여실시현시적방법。용계산전식기술대일계렬CT도편진행삼유신식융합，병근거CT도편수목적불동，제작료불동적계산전식도，기우CT도편본신시수자화이유도상적특점，채용료쾌속부리협변환산법。용액정공간광조제기작위전식도현시재체，설계료CT도상삼유실시현시계통，이용계산궤공제실시수출불동적계산전식도도공간광조제기，통과광학재현획득불단변화적삼유재현상，실현CT도상적삼유실시현시。
Combining computer-generated holography with liquid crystal spatial light modulator (LC-SLM),a new method for three-dimension reconstruction and real-time display of CT images is proposed.The two-dimension infor-mations of a series of CT images are transformed into three-dimension informations,and a series of different computer-generated holograms which are connected with the number of CT images are obtained by computer.In the process, Fast-Fourier-transform algorithm is used to speed up the calculation by taking full advantage of the characteristic that CT images are digital two-dimension images.The three-dimension digital real-time display system of CT images is set up,in which the traditional holographic plate is replaced by LC-SLM.Controlled by computer,holograms are sent to LC-SLM in sequence,the three-dimensional reconstructed images that change with the holograms are observed,and the real-time display of three-dimensional CT images is realized.