数字视频处理芯片架构设计及核心去隔行算法实现

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1、上海交通大学硕士学位论文数字视频处理芯片架构设计及核心去隔行算法实现姓名�刘志恒申请学位级别�硕士专业�软件工程�集成电路�指导教师�杨莉;战嘉瑾20080501上海交通大学工程硕士学位论文摘要摘要随着技术的发展和人们生活水平的提高�对高清晰、高画质的影像设备的要求也越来越高。传统的电视系统已经难以满足人们的需要。特别是随着近几年平板显示技术日益成熟�已逐渐取代传统的阴极射线管电视�成为市场的主流。本文根据高集成度视频处理芯片的实际开发经验�首先介绍高集成度的数字视频处理芯片的架构�然后对芯片中

2、使用的核心技术之一�去隔行算法的实现进行了重点介绍�该基于时空权重和边缘的运动自适应去隔行算法采用四场的运动检测方法�并利用数学形态学技术对运动检测的结果进行处理�以提高运动检测的精度�结合基于图像边缘特征的场内插值和时间空间的三维权重计算技术将输入的隔行信号转换成逐行信号输出。最后�对如何实现芯片的可测试性设计�以提高芯片的测试覆盖率�降低芯片的测试成本进行了讨论。关键词�去隔行�运动自适应�运动检测�可测试性设计第III页上海交通大学工程硕士学位论文ABSTRACTadaptiveweigh

3、tfiltertoachievede-interlacing.Atlast,introducethemethodhowtodesignfortesttoenhancetestcoverageandreducetestcost.KEYWORDS:DE-INTERLACING,MOTIONADAPTIVE,MOTIONDETECTION,DESIGNFORTEST第V页上海交通大学工程硕士学位论文图片目录图片目录图1芯片应用系统示意图·································

4、·················································4图2芯片总体功能结构框图··············································································8图3模拟和数字输入前端示意图······································································9图4数字输入前端框图··············

5、······································································10图5亮度色度瞬太改善模块结构框图·····························································12图6面板上电�关断�时序示意图································································13图7MCU控制框图·········

6、··················································································14图8隔行扫描与逐行扫描对比········································································18图9去隔行示意图·······································································

7、·····················19图10直接合并去隔行效果图··········································································20图11行复制算法示意图··················································································21图12基于边缘的方向相关性计算示意图·························

8、······························22图13运动自适应去隔行框图··········································································24图14两种运动检测方法··················································································24图15同极性两场运动检测······················