gradual change

gradual change的基本解释

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渐变

与gradual change相关的网络例句 [注：此内容来源于网络，仅供参考]

It is the first important step in video analysis and will directly affects the effectiveness of indexing Shot boundary detection is one of our major research interests and we will tackle the following existing problems the ambiguity between gradual change and camera motion, the discontinuity during gradual change, false detection caused by illumination variation and flashlight, automatic threshold selection Firstly, we discuss shot boundary detection in non-compressed domain In chapter 2, we compare some of the commonly used detection methods which are based on frame difference and point out that single feature will not generate good results As a conclusion, we use fuzzy logic to combine multiple features Presently, most frame difference based shot boundary detection algorithms rely on threshold and hence the selection of such thresholds will greatly affect the performance of boundary detection We propose a membership function to define frame difference and calculate the membership with self adaptation according to the statistic distribution of frame differences to satisfy different type of video clips Experiments show that the proposed fuzzy shot boundary detection algorithm can be used with different video types and has a high detection precision and recall In chapter 3, we discuss model-based shot boundary detection algorithms regarding chromatic and spatial editing effects such as fade-in, fade-out, dissolve and wipe Various parameters are proposed to better describe the characteristics of each editing type.

镜头边界的检测是把视频自动地分割为一个个镜头，作为基本的索引单元，因此它是视频分析重要的第一步，直接影响到视频检索的成败。镜头边界的检测是本文研究的重点之一。目前镜头边界检测算法主要存在以下问题：渐变与镜头运动难以区别；渐变过程中的不连续与停顿、光照条件的变化及闪光灯等特殊情况会引起误检测；自动选择阈值比较困难等。本文首先针对非压缩域视频进行了镜头边界检测的研究。在第二章中我们采用了比较流行的基于帧间差的方法。在比较各种帧间差计算方法的基础上，指出使用单一的特征难以取得很好的检测效果，提出用模糊逻辑综合使用各种特征。目前大多数基于帧间差的镜头边界检测算法都采用阈值法进行镜头转换的判别。阈值选择的误差对检测性能有较大的影响，本文提出用隶属度函数定义帧间差较大、中等较大和较小等概念，并根据帧间差的统计分布自适应地确定隶属度，以适应不同类型的视频片断。实验结果表明这种基于糊逻辑的镜头边界检测算法可以适应不同的视频，并具有较高的检测精度和检出率。在第三章中采用基于模型的方法进行镜头渐变的检测，研究了淡入／淡出、慢转换和扫换的模型。

The gradual progress of international industry structure and industrial policy effect analyse Song Zhenfeng one, a certain number of characteristic 1 of gradual progress of international industry structure.

国际产业结构的演进和产业政策效果分析宋振峰一、国际产业结构演进的若干特点1。

The flood activity is one child system in this system, it also has an extremely strong nonlinearity relation with the weather system, and it is very difficult for the analysis means based on explicit function and linear measure and the mathematical model in simulating the gradual progress course and gradual progress method of flood reasonably.

水文水环境系统是一类与自然资源、生态环境和社会活动紧密相关的、极其复杂的大系统，洪水活动作为该系统的一个子系统，还与天气系统具有极强的非线性相关关系，这使得基于显函数和线性假设的分析手段与数学模型很难合理地模拟洪水的演进过程和演进规律。

与gradual change相关的网络解释 [注：此内容来源于网络，仅供参考]

gradual transition：镜头边界检测

金融市场:the gradual method of reform | 镜头边界检测:gradual transition | 渐进式"台独":"Gradual Taiwan Independence"

gradual settlement：逐渐下沉

gradual application of the prestressing force 预应力渐次施加 | gradual settlement 逐渐下沉 | gradual stress increase 应力渐增

RG GRADUAL：二色追逐,有淡入淡出(红绿),渐亮渐暗

23 WHITE GRADUAL 白色闪频,有淡入淡出,渐亮渐暗 | 24 RG GRADUAL 二色追逐,有淡入淡出(红绿),渐亮渐暗 | 25 RB GRADUAL 二色追逐,有淡入淡出(红蓝),渐亮渐暗