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mean absolute difference
相关语句
  平均绝对差
     Based on the rate distortion theory,rate-quantization(R-Q) model based on mean absolute difference(MAD) was derived.
     基于率失真理论,推导出了基于平均绝对差(MAD)的码率(R-Q)模型.
短句来源
     The conclusions drawn from this paper are: Absolute Difference(AD) and Mean Absolute Difference(MAD) are equivalent.
     得出绝对差(AD)与平均绝对差(MAD)算法等价;
短句来源
     The experiment shows that the matching method based on GA is much faster than those based on Sequential Similarity Detection Algorithm(SSDA) and classical Mean Absolute Difference(MAD).
     实验表明 :基于遗传算法的匹配算法比序贯相似度度量 (SSDA)和经典的平均绝对差 (MAD)方法要快得多。
短句来源
     THE LOCAL ACCURACY OF MEAN ABSOLUTE DIFFERENCE IMAGE MATCHING SYSTEM
     平均绝对差图象匹配系统的定位精度
短句来源
     Experimental results show that the approach proposedgives higher matching probability and better positioning accuracy than those given by tradi-tional ones such as the MAD(mean absolute difference)algorithm and the feature matchingmethod.
     实验表明该匹配方法能够获得比传统匹配方法,例如平均绝对差算法以及特征匹配法更高的匹配定位精度和匹配概率。
短句来源
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  平均绝对差值
     When allocating the target bits for the encoding frame, the Zero Coefficient percentage is a good factor and is more effective than Mean Absolute Difference.
     该算法抛弃传统平均绝对差值的度量方式,将零系数百分比作为图像复杂度的一个度量因子,为待编码帧进行目标码率的分配。
短句来源
  “mean absolute difference”译为未确定词的双语例句
     It is used for the predict count updating of MAD (Mean Absolute Difference).
     用于MAD(Mean Absolute Difference)预测值的更新。
短句来源
     The mean absolute differences between the simulated and the observed were computed. The mean absolute difference of the amplitude is 3.46 cm,and the mean absolute difference of the phase-lag is 3.89°.
     计算出M2分潮调和常数的模拟值与实测值之差的绝对平均值:振幅差为3.46cm,迟角差为3.89°。
短句来源
     In order to more analyze the relativity of MB types, the mean absolute difference (MAD) and the mean of absolute frame difference (MAFD) are introduced to measure the relativity of MB types in P and B frame in temporal and spatial. And rules of MB types SKIP/DIRECT mode selection inter frames were set down according to the experiments.
     为更好地分析这种宏块类型的相关性,本文引入了MAD、MAFD来度量P、B帧的时、空域相关性,并根据实验,制定出了帧间宏块类型SKIP/DIRECT模式选择的准则。
短句来源
     Compared with the multiscale fractal signature, it does not have singular values and can be computed easily. For this reason, a natural scenery image matching method is proposed. Experimental results show that the δ net fractal fingerprint signature is a robust fractal feature of the images of natural scenery and the matching method proposed is more efficient than those in common use based on the grey level and edges, such as the mean absolute difference (MAD) algorithm and the multiscale fractal signature matching method.
     基于δ-网分形指纹特征,提出了一种自然景物图像的匹配方法.实验结果表明δ-网分形指纹特征是一种自然景物图像的稳定分形特征,采用δ-网分形指纹特征对自然景物图象进行的匹配,能获得比传统的基于灰度和边缘的特征匹配方法以及多尺度分形指纹匹配方法更好的匹配结果.
短句来源
     The mean absolute differences between the simulated and the observed were computed. The mean absolute difference of the amplitude is 4.0cm, and the mean absolute difference of the phase-lag is 2.5°.
     为了取得较好的数值模拟结果 ,同时对给定的底摩擦系数进行校正 ,计算出调和常数的模拟值与实测值之差的绝对平均值 :振幅差为 4 .0 cm,迟角差为 2 .5°。
短句来源
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  mean absolute difference
Comparisons of image reconstruction quality are based on the mean absolute difference in pixel intensities between the true and reconstructed images.
      
Typical LP computable risk measures, like the mean absolute deviation (MAD) or the Gini's mean absolute difference (GMD) are symmetric with respect to the below-mean and over-mean performances.
      
The variability between sessions had a mean absolute difference of 3 to 10 mm for the spatial parameters.
      
Three years of bi-weekly hydrologic data from each of the 43 sites were used to estimate mean surface water level and mean absolute difference (MAD) in surface water level for every plot.
      
Four statistics proved to be satisfactory; these were (1) the standard deviation, (2) the mean absolute difference, (3) the mean pair difference and (4) the interquartile range.
      
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In this paper the asymptotic distribution of the mismu(?) absolute difference terrain contour matching algorithm is proved to be normal and the numerical algorithm for minimizing the computational cost is propounded. The multistage optimization method of computational cost is considered. The preprocessing approach of reference digital map normalization using subtracting local mean value and its applications worth is also discussed. The validity of theoretic analysis and considered approach is confirmed by a...

In this paper the asymptotic distribution of the mismu(?) absolute difference terrain contour matching algorithm is proved to be normal and the numerical algorithm for minimizing the computational cost is propounded. The multistage optimization method of computational cost is considered. The preprocessing approach of reference digital map normalization using subtracting local mean value and its applications worth is also discussed. The validity of theoretic analysis and considered approach is confirmed by a large amount of computer simulation results, and the actual match time is reduced to one sixth of the conventional mean absolute difference matching algorithm.

本文证明了平均绝对差地形匹配算法失配度量的渐近分布是正态分布,提出了计算代价极小化的数值算法。研究了计算代价多级优化的方法和对于进一步减小计算量的必要性。讨论了基准数字地图局部零均值化预处理的方法和应用价值。大量的计算机仿真结果证实了理论分析和所研究方法的正确性,使实际匹配时间降低到常规平均绝对差算法的1/6。

The problem of map matching becomes optimizing problem of multi-valley function after mismatching measure has been defined. Fast optimizing of multi-valley is a new method of solving the optimizing of mismatching measure proposed by authors. In this paper, appllying the method, an exhaust searching of map matching can be substituted by directional local searching, thus a lot of computation is saved and a high registration accuracy of matching is sure. Also the relationship between threshold and alarm probability...

The problem of map matching becomes optimizing problem of multi-valley function after mismatching measure has been defined. Fast optimizing of multi-valley is a new method of solving the optimizing of mismatching measure proposed by authors. In this paper, appllying the method, an exhaust searching of map matching can be substituted by directional local searching, thus a lot of computation is saved and a high registration accuracy of matching is sure. Also the relationship between threshold and alarm probability is derived and a region of threshold factor which make alarm probability be less than a defined value is given for Mean Absolute Difference algorithm. Finally, after a lot of matching experiments on three different aerospace photographs using fast optimizing of multivalley and comparing with Sequential Similarity Detection Algorithm, the correctness of (his method is proved and it is shown that this method has the advantages of high registration accuracy, small computational cost, easy to select threshold et'c.

当失配度量函数定义之后,地图匹配问题就变为了二维随机多谷函数的寻优问题。多谷快速寻优方法是作者提出的解决失配度量寻优的一种新方法。本文应用这种方法,变地图匹配中的穷举搜索为定向局部搜索,从而节省了计算,保证了匹配定位精度。本文还针对平均绝对差算法推导了门限与漏警概率的关系,给出了保证一定漏警概率的门限系数分布区间。最后,使用本文的方法在三幅航空照片上进行了大量的匹配实验,并与序贯相似性检测算法进行了比较,验证了方法的正确性,同时表明多谷快速寻优方法用于地图匹配具有定位精度高,计算量小,参数易于选择等优点。

A new method of two-stage image matching with multiple assumption tests based on two-fork deciding tree is proposed in this paper. First, the definition of twofork deciding tree representing multiple assumption tests and its computational cost formula are given. Then, a new variable threshold is derived. Finally, the computational cost of two-stage image matching with multiple assumption tests using variable threshold is obtained. A large amount of computer simulations shows that the limit of computational cost...

A new method of two-stage image matching with multiple assumption tests based on two-fork deciding tree is proposed in this paper. First, the definition of twofork deciding tree representing multiple assumption tests and its computational cost formula are given. Then, a new variable threshold is derived. Finally, the computational cost of two-stage image matching with multiple assumption tests using variable threshold is obtained. A large amount of computer simulations shows that the limit of computational cost of original twostage template matching can be broken by the proposed method and the computational cost of image matching is further reduced. Furthermore, it is sure that the matching location accuracy is almost the same as the Mean Absolute Difference Algorithm.

本文在二叉判别树的基础上,提出了一种新的多级假设检验的两级图象匹配方法。给出了表示多级假设检验的二叉判别树的定义及计算代价公式,导出了一种新的可变门限,得出了采用可变门限的多级假设检验的两级图象匹配的计算代价。计算机模拟实验表明,本文提出的方法能突破两级模板匹配计算代价的极限,降低图象匹配的计算代价,同时保证了接近于平均绝对差算法的匹配定位精度。

 
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