【作者】 邓耀华；

【导师】 吴黎明；

【作者基本信息】 广东工业大学 ， 测试计量技术及仪器， 2004， 硕士

【摘要】 人体白细胞的计数和质量是临床诊断的重要依据。目前国内大多数医院的血液白细胞的检验以人工操作为主，由于受到各种人为因素的影响，使得白细胞的检测质量和效率受到一定的影响。 将计算机图像处理和神经网络理论用于白细胞的检测，可以提高白细胞检测质量和效率。本文研究了用于白细胞识别的图像分析系统的结构和性能，提出了以显微镜、微机和彩色CCD摄像机为主体，应用计算机数字图像等技术实现白细胞分类的实用化系统结构。 本文的主要研究工作是白细胞显微图像分析，综合应用微机控制技术、嵌入式系统技术、数字图像处理技术、小波分析、数学形态学和神经网络理论，围绕着白细胞显微图像分析系统的信息化、自动化程度中的几个关键问题做了以下几方面的研究：1．建立以彩色CCD摄像机成像，计算机进行处理的血细胞自动分类系统模型。2．实现血细胞的定位检出和区域分割。3．对血细胞图像进行数学形态学，彩色光密度和纹理特征的提取。4．运用BP神经网络建立白细胞图像识别分类器，进行网络训练。5．嵌入式Linux显微镜数控平台控制系统设计。本文分别从理论和实际应用的角度对其中的技术难点进行深入分析，在几个方面取得了创新。 采用嵌入式Linux作为开发平台，研究基于Linux的微机控制图像分析系统，利用Linux的开放性和灵活性，精简系统内核，提高了系统的可靠性和稳定性。 基于小波包分解的白细胞图像处理，提出了细胞胞核提取的基本思想，进行了深入的理论研究和实际分析，实现对胞核边缘快速而有效的提取。 应用数学形态学流域分割算法对具有连通或相似灰度的目标图像进行检测与标示，解决了一般数字图像处理技术难以分割具有交叠区域的白细胞图像的问题，在细胞浆的边缘分割中具有创新意义。 分析了图像识别系统的处理流程，设计了基于Linux平台的上下位机两级控制系统，实现了Linux下的接口通信和视频采集，并将系统软件嵌入到硬件中，显著提高控制精度和系统的响应速度。 本课题中的生物显微镜数控平台已经在广州光学仪器厂投入生产。理论分析广东工业大学工学硕士学位论文和应用表明，本系统具有实际的应用价值。更多还原

【Abstract】 The amount and quality of leucocytes is a important gist in the clinical diagnosis. The measure of blood cells in most domestic hospital relies mainly on manual operation at present, It is influenced by various kinds of human factors, so the examination qualities of the leucocytes are partly effected, and the examination efficiency of the leucocytes is effected too.The application of computer image processing and neural network can greatly improve the analytical efficiency of leucocytes. This paper discussed the structure and performance of automatic classifies system of leucocytes. The system is composed by microscope, microcomputer and chromatic CCD camera, it use the technology of digital image processing and neural network theory to realize automatic classifies of the leucocytes.The main work of the paper is study on the analysis and the recognition system of leucocytes micrograph. The technology of computer control and embedded, theory of digital image processing, wavelet, mathematics morphology, and neural network pattern-recognition, are applied on the system. Around several key problems, which analytical system of leucocytes micrograph is of information and automatization, have studied on the following aspects: 1.Design automatic classifies system model of blood cell, which is based on imaging of colored CCD camera and computer control. 2.Realize the localization and examined out of the blood cell and the area cutted. 3.Using mathematics morphology on the abstraction of chromatic light density and veins characteristic of the blood cell image. 4.Using BP neural network on setting up recognition classifying device of leucocytes images, and then train it. 5. The design of microscope’s NC platform control system Based on the embedded Linux. The paper has analyzed deeply on the difficult point of the theory and practical application, and acquired some creation in the following aspects.The paper has studied the image analysis system based on the Linux operationsystem. Using the open and agility of the Linux we have simplified the system’s kernel and improved the system’s reliability and stability.To analyze the leucocytes image by using wavelet, we bring forward the idea of detecting leucocytes’ karyon. Through analyzing deeply, we realize the fast-time leucocytes image detection.In this paper we have used the watershed segmentation arithmetic of mathematics morphologic to analyze and mark the sequential and similar gray target image. As a result, resolved the difficult problem that general technology of digital image can’t detect leucocytes’ edge of overlapping cells, which has creative meaning in the edge segmentation technology of leucocytes plasm.The paper discussed the disposed flow of image recognition system, and designed the interface communication of the control system that are master and slave computers based on the Linux platform, then embeds the control programs into the system hardware. All of them can greatly improve the control precision and the response rapidity of system.Microscope NC platform of this system has been finished. It has putted into production in Guangzhou optical instrument factory. Proved by the analyzing theory and practical application, the system is of applied value.更多还原