基于神经网络的图像来源识别方法比较研究

随着手机等便携式智能电子设备的普及,图像已成为最重要的信息载体之一,在新闻、社交及司法等领域发挥着重要作用.在享用电子图像带来便捷性的同时,图像处理工具给不法分子通过篡改电子图像实施诈骗等犯罪活动提供了可能,识别图像来源、辨别图像真伪已成为遏制和惩罚此类犯罪活动的重要技术手段.该文讨论了神经网络在图像源识别中的应用方法...     

基于图像识别的湿地外来入侵物种监测系统的设计与实现

针对外来物种入侵对湿地生态环境构成的严重危害和潜在威胁,开发了湿地外来入侵物种监测系统。本系统基于Linux操作系统,选用Eclipse开发软件、MySQL数据库和Openlayers地理信息系统,应用人工智能百度AI开发平台的图像识别接口服务,实现了外来入侵物种名录管理、物种识别、物种上报等功能。经过测试,本系统识别准确度较高,对终端性能要求较低,运行基本正常稳定,具有较强的移植性,适用于相关监测系统识别功能的二次开发,可以有效支持湿地外来入侵物种监测工作。     

数字图像三点中值去隔行技术研究

对传统三点中值去隔行算法进行改进,采用同步更新迭代的方法,提高了图像的画面质量.实验证明,该算法不仅降低了时间复杂度,保护图像边缘,而且明显改善了噪声滤波效果.     

125 MN挤压机挤压中心在线监测系统设计

125 MN挤压机挤压中心检测目前采用人工测量计算法,工作量大且精度低.本文在分析常见光电位置检测方法的基础上,结合激光技术和图像处理技术,设计了一种新的挤压中心在线监测系统.阐述了该监测系统的原理和实施方案,建立了中心偏移量和偏转角度计算的几何模型,推导了计算公式,进行了模拟试验并做了误差分析.系统可同时对穿孔横梁、穿孔动梁、固定横梁、活动横梁和挤压容室进行在线监测,监测距离达35 m.     

A Novel Cartesian Plot Analysis for Fixed Monolayers That Relates Cell Phenotype to Transfer of Contents between Fibroblasts and Cancer Cells by Cell-Projection Pumping

We recently described cell-projection pumping as a mechanism transferring cytoplasm between cells. The uptake of fibroblast cytoplasm by co-cultured SAOS-2 osteosarcoma cells changes SAOS-2 morphology and increases cell migration and proliferation, as seen by single-cell tracking and in FACS separated SAOS-2 from co-cultures. Morphological changes in SAOS-2 seen by single cell tracking are consistent with previous observations in fixed monolayers of SAOS-2 co-cultures. Notably, earlier studies with fixed co-cultures were limited by the absence of a quantitative method for identifying sub-populations of co-cultured cells, or for quantitating transfer relative to control populations of SAOS-2 or fibroblasts cultured alone. We now overcome that limitation by a novel Cartesian plot analysis that identifies individual co-cultured cells as belonging to one of five distinct cell populations, and also gives numerical measure of similarity to control cell populations. We verified the utility of the method by first confirming the previously established relationship between SAOS-2 morphology and uptake of fibroblast contents, and also demonstrated similar effects in other cancer cell lines including from melanomas, and cancers of the ovary and colon. The method was extended to examine global DNA methylation, and while there was no clear effect on SAOS-2 DNA methylation, co-cultured fibroblasts had greatly reduced DNA methylation, similar to cancer associated fibroblasts.     

Slicing Method for Reverse Engineering Based on Image Mosaic

Reverse engineering dealing with images is traditionally based on image processing and contour recognition. A new method is presented based on the combination of sectional slicing with image mosaic. Sectional contours of the target object are generated by colorful liquid or laser scanning, these images from different views are fused into a set of complete cross-sectional images, thereby the whole practical model is reconstructed in 3D space.     

常用边缘检测方法分析与比较

论文对几种常用的图像边缘检测算法进行了分析,实际上这几种方法都在我们的生活生产乃至国防中得到了广泛的应用。论文在分析的基础上,进一步进行了比对说明,指出了它们各自的特点。     

基于内容的图像检索系统

文章介绍了基于内容的图像检索技术及其优势，并举了几个例子。     

等周图像分割算法的一种加速改进

在等周算法应用于图像分割中,由于不能充分利用求解线性方程组所得到的状态向量,且对于多目标的图像进行处理时采用的二分迭代产生较大计算量的不足,通过对多目标图像的状态向量和等周率进行分析,提出一种加速改进k+1分迭代方式,经分析和实验表明改进后方法比原算法分割在计算次数和计算时间上效率更高。     

利用FPGA器件实现非线性图象处理器

非线性图象处理中有许多操作以逻辑运算为主,并且结构简单、规则、有重复性,非常适于FPGA器件实现。本文以堆栈滤波器为例,研究了利用XC6216器件实现椎栈滤波器的方法以及得到的性能和代价指标。