By analyzing, an adaptive mode of linear filter based on DCT is given out. The curves of the vertical second derivative of gravity anomaly are matched well with those of the academic second derivative, and the calculating precision is much higher.
通过分析给出了基于DCT的合适的线性滤波方式，滤波后的重力异常垂向二阶导数与理论二阶导数拟合效果好，具有较高的计算精度。
Then the secret image is embedded into the DCT coefficients.
在此基础上，将密图嵌入到承载图像的DCT域系数中。
There is high precision in the model experiment of sloping plate and the RTP field errors are less than 0.001 nT. In the model experiments of single and multi-sphere, we can obtain the better RTP results using the DCT method when the magnetic dip is 5°, and the results are excellent when the dip is 15°.The shape of contour line, the maximum and the plane location of magnetic model are all good comparing with the theoretical anomalies when the model is perpendicular magnetization.
在倾斜板状体模型实验中，化磁极误差小于0.001 nT，具有较高的精度；在单球体及多球体模型实验中，采用基于DCT的化磁极方法在5°倾斜磁化时就可以取得较好的化磁极结果，15°时化磁极的效果更加明显，其等值线的形态、幅值以及所反映的磁性体的水平位置都得到较好的恢复；这说明，采用本文方法进行化磁极时，可以取得较好的效果。
If this is shown to be the case, then the use of the DCT in face recognition becomes of more value than the KLT because of it's computational speed.
本文的目标是构建在线人脸识别系统，因此对人脸特征的提取也应该以实时性为前提，同时应兼顾人脸识别率，总所周之，DCT变换是一种与KL变换非常相似的次最优变换算法，它独立于信号量，有类似离散傅立叶变换的快速算法，同时在维数下降，特征提取方面都非常接近经典的KL变换算法，因此，DCT变换同样适用于模式识别领域。
Based on a quantitative analysis on magnitude of DCT c...
基于对图像DCT系数振幅的定量分析，我们指出：DC分量比任何AC分量有更大的感觉容量，从稳健性的角度，DC分量最适合用来嵌入水印。
The first algorithm uses a binary image as watermarking, the embedding strength varies with the features of the subblock of the image in DCT domain, and the Arnold matrix is also used in this algorithm to receive good security.
第一种算法以二值图像为水印，利用图像子块在DCT域的特征分类结果对水印嵌入强度进行自适应调节，算法综合运用图像置乱变换，进一步增强了水印的安全性。
Based on the theory of splitting block in DCT domain, the method realizes the same effect in DCT domain as in pixel domain. It extracts dominant colors of image and construct MPEG7 descriptor. New method can determine thresholds automatically, not determined by experience.
这种方法利用DCT系数的统计特征与像素统计特征的映射关系，以DCT域内的块分割为理论基础，在DCT域内实现了像素域内相同效果的操作，提取了图像主颜色构建了MPEG7描述符。
The joint traction control strategy of dual-clutch transmission light off-road vehicle relying on adjusting the engine, inter-axle differential and brakes was presented. The OCT working principle was introduced, and the dynamic model of the shifting process was established.
提出双离合器式自动变速器轻型越野车依靠调节发动机、轴间差速器和制动器的联合牵引力控制策略，分析了DCT传动的工作原理，建立了换挡过程的动力学数学模型。
Furthermore, an image blind watermarking algorithm based on Waston's visial model and DCT domain is presented.
然后，提出了一种基于Waston视觉感知模型的图像DCT域盲水印算法。
Also extend the above method of designing multi-channel filer banks with optimization and one by one based on general parameter filter into logarithm-uniform case, where the aliasing components are analyzed and the canceling measure is considered.
3在综述图像水印算法的基础上，提出了基于多通道均匀子带分解的图像水印算法，选择中频子带嵌入水印，嵌入频带选择比塔形小波分解灵活，也没有分块DCT潜在的块效应。
The arithmetic may be realized by shift and its velocity is superior to the DCT transformation.
设计了具有FFT类型的快速算法，该算法可采用移位操作实现，其速度优于DCT变换。
The music signal was divided into several subsections and the length of each section was equal to the duration of one semiquaver. The base frequency was obtained using one dimension DCT operated on each section. The extreme points of the musical notes were found by comparison with the adjacent sub-sections. And then, the musical scores were got using the principle of least derived notes.
采用离散余弦变换结合能量比对的手段，并提出了一种变化音最少法则：以十六分音符对应的时值作为步长，将乐曲信号分为若干个子段；对每个子段进行一维DCT操作，提取基音频率；对相邻子段进行能量比对，查找音符的端点；利用变化音最少法则，生成乐谱。
The music signal was divided into several sub-sections and the length of each section was equal to the duration of one semiquaver. The base frequency was obtained using one dimension DCT operated on each section. The extreme points of the musical notes were found by comparison with the adjacent sub-sections. And then, the musical scores were got using the principle of least derived notes.
采用离散余弦变换结合能量比对的手段，并提出了一种变化音最少法则：以十六分音符对应的时值作为步长，将乐曲信号分为若干个子段；对每个子段进行一维DCT操作，提取基音频率；对相邻子段进行能量比对，查找音符的端点；利用变化音最少法则，生成乐谱。
The BMW M3 saloon, having skipped a generation, is now snarling at your nearest UK dealership, ready to be accosted for small sums starting at ￡49, 415 for the sedan manual and ￡52, 005 for the M-DCT version. Its entire allocated consignment of about 400 is expected to be on roads by the end of 2008.Apart from the most obvious; two extra doors, coupe and sedan are virtually mechanically identical, both using the same 4.0-litre V8 premium unleaded petrol engine that`s 15kg lighter than its multi-award-winning 3.2-litre straight 6 predecessor.
宝马英国公司近日公布了M3轿车的价格，其中手动版起价为49415英镑（约合人民币71.05万元），而配备M-DCT双离合器变速箱的版本起价为52005英镑（约合人民币74.78万元）。M3轿车和轿跑车除了增加了两个车门外，机械结构相同，搭载的都是使用高级无铅汽油的4.0升V8引擎，它的重量比宝马屡次获得大奖的3.2升直列六缸引擎还轻了15公斤。
The adaptive voltage scaling system has been applied to DCT and reduces at most 45% power consumption of DCT.
我们将适应性电压调变的系统应用在离散余弦定理的处理器上然后成功的减少了离散余弦定理处理器最多45%的电源消耗。
MVD and VEGF were the main pathological factors of DCT of adrenal masses, which resulted in different T-D curve, Washr and Washa of adrenal DCT.
MVD和VEGF可能是导致腺瘤和非腺瘤具有不同的T-D曲线类型和廓清率的主要因素之一。
Results Adrenal adenoma was significantly different from nonadenoma in T-D curve, 7min-delayed Washr and Washa of DCT.
结果腺瘤与非腺瘤间T-D曲线类型和7 min延时点相对廓清率和绝对廓清率差异均存在统计学意义(P=0.000)。
Adenomas were suggested when adrenal masses presented as Type A and C, and/or Washr≥34%, and/or Washa≥43%, vice versa, nonadenoma. These findings showed close correlation of both enhancement appearances of DCT and MVD and VEGF expression of adrenal masses.
肿块廓清曲线为A、C型，和Washr≥34 HU，和Washa≥43%组均提示为腺瘤，反之提示为非腺瘤。T-D曲线廓清迅速组、7 min延时点Washr≥34%组和Washa≥43%组MVD、VEGF表达水平分别高于廓清缓慢组、＜34%组和＜43%组；由此提示动态增强CT表现特征与MVD、VEGF表达存在相关性。
Conditional frame replenishment is one of basic interframe coding algorithms. Traditional spatial-domain CFR have difficulty in threshold selection and are subject to the impact of noise and variance of luminance.
针对传统基于空间域的条件补偿法存在阈值选取困难、易受噪声影响和容易出现误判等问题，本文提出了一种基于DCT频率域的条件帧间补偿法及基于该算法的实时视频编码方案。
Each DCT coefficient is divided by its corresponding constant in the quantization table and rounded off to the nearest integer.
每个基於DCT系数除以相应的常数的量化表，并四舍五入至最接近的整数。