本文提出一种噪声图象中检测边缘的新方法。
本文提出了一种噪声图象快速边缘提取和分割算法。
An algorithm of fast edge extraction and segmentation in noisy image is described in this paper.
噪声图象的快速边缘提取和分割是实时图象处理中的重要问题。
Fast edge extraction and segmentation in noisy image is a difficult problem in real-time image processing.
景物边缘信息是进行图象分析和识别的重要属性，如何有效地从噪声图象中提取边缘是这些领域中的难点。
Edge is an important attribute for image analysis and recognition, but it is difficult to effectively extract edge from noisy image in the domain.
用信号叠加技术减少电图的噪声干扰。
Noise of electro-grams was reduced using signal averaging technique.
最后，给出了几种滤波技术的滤波效果比较图，验证了本文提出的滤波新方法对椒盐噪声的滤除能力。
Finally several resulting figures from filtering technique effect figures are presented to verify the new noise filtering technique developed in this paper.
为了了解源电容如何影响噪声增益，再来看一下图2-15中的简化的安培计模型。
To see how changes in source capacitance can affect noise gain, let's again refer to the simplified ammeter model in Figure 2-15.
将噪声添加到海拔和湿度图会导致在区域过度附近产生“抖动”。使用噪声在坐标附近采样会扭曲形状的边缘。
Adding noise to the elevation and moisture will produce "dithering" in the zones near transitions. Sampling nearby points using noise will distort the shapes of the boundaries.
在高频范围的噪声辐射也可通过此方法控制（图11和图12）。
The noise emission can be also controlled in this way in high frequency range (Fig. 11 and Fig. 12).
用平均平滑周期图法分别估算出信号与噪声的功率谱密度函数。
The power spectrum of the noise and signal are estimated by the average smooth periodogram method.
同时，在不灵敏频带内(如图象边缘区)引入一定噪声以达到整个恢复图象的噪声平滑。
Meanwhile, some noises are added into frequency bands where it is less visible in order to achieve noise smooth of overall reconstructing image.
使得图象更为清晰，抑制了在低照度下拍摄经常出现得颗粒性和写噪声。
As a result, images are clearer, and the graininess and white noise that often appear when shooting in low light are suppressed.
高分辨率SAR图象中目标背景复杂，同时由于受相干斑噪声的影响，很难直接从原始图象数据中提取道路特征。
As the background of objectives in high-resolution SAR images is complicated and also affected by speckle noise, it is almost impossible to extract roads directly from original remote sensing images.
在我们研制的视觉电生理地形图系统中，成功地用它从背景噪声中提取出VEP信号，完成信号的预处理。
The authors extracted VEP signals from the background noises by wavelet transform successfully and completed the preprocessing of the signals.
这种方法对高斯噪声和星座图由于信号初始相位而引入的旋转具有良好的稳健性，并避免了神经网络中的过学习和局部极小点等缺陷。
This method is robust to Gaussian noise and constellation rotation due to initial phase of signal and avoids overfitting and local minimum in neural networks.
投影图波动明显，但噪声比较大，影响骨化中心定位结果，因此去除投影噪声非常重要。
The graph of phalange projection has obvious fluctuations but has much noise which will influence the results of ossification center location, so it is very important to reduce noise of projection.
这类滤波器不仅可以有效地抑制图象中的噪声，而且较好地保持了图象的几何特征。
They can not only efficiently suppress noise in the image but also preserve the geometrical features of the image.
堆栈滤波器是一类能够有效滤除脉冲类噪声，同时能较好地保护图象边缘与细节的非线性滤波器。
As a kind of nonlinear filters, stack filters can suppress impulse noise effectively, and keep edges and details at the same time.
本文讨论了散斑摄影条纹图的噪声来源及模型，设计合适的数字滤波器。
The noise sources and model in speckle photography fringe pattern is discussed and a noise filter for this model is designed.
图象跟踪是运动图象处理中的关键环节，但是如何在强噪声下实现快速有效的图象跟踪却一直是难点。
Image tracking is a key part of moving image processing but it is difficult to achieve fast and efficient image tracking in a highly noisy background.
本文收集了我国部分内河船舶噪声状况的资料，介绍了图外船舶噪声许用标准，并对船舶噪声的各种控制方法作了较详尽的介绍。
This article brings together the noise data of part of our inland ships, introduces the permissible standard of ship noise abroad, and tells of the various methods of controlling ship noise.
利用光学周期平均法能够清晰地描绘带有噪声的周期性图象。
Noisy images with a periodic structure can be cleared by utilizing optical periodic average method.
介绍了所用的二维光子计数斑点像探测系统的性能，分析了探测系统的光子噪声、附加噪声和其它更复杂的噪声对斑点图的平均功率谱和重谱的影响。
Then the influence on the average power spectrum and bispectrum of specklegrams caused by the photon noise, additive noise and more complex noises of other kinds in the detecting system .
本文通过对比试验分析了两种管长在不同转速下噪声频谱图，其共振转速与计算结果比较吻合。
The analysis of noise spectra of two exhaust pipes at different engine speeds is made. the resonance speed is obtained and agrees with the calculating value.
通过与均值滤波、中值滤波的对比实验，自适应权重中值滤波器表现出良好的滤波特性，而且它在抑制噪声的同时，较大限度地保持住图象的边沿特征。
By the comparative tests with the mean filter and the median filter, the AWMF performs best features in the reduction of noise and keeping edge information of images.
首先对噪声信号进行小波包分解，得到含有待诊断柴油机主轴承间隙故障信息的噪声信号时频分布图，并由此定义图像。
We illustrate the wavelet package analysis that can obtain the time-frequency distribution figure of noise signal, which can be used to define gray-image.
为了消除噪声残留，引入了平滑系数与限制强度系数对梯度图作阈值化处理。
In order to remove the residual noise which can not be smoothed by filter, the smoothing coefficient and constrain coefficient were used to threshold the gradient image.
在PET重建的迭代过程中，此种负反馈迭代算法利用最近的一次重建图像来更新有噪声的探测到的发射正弦图数据。
Methods the CF iterative algorithm was applied to update the noisy detected emission sinogram data using the latest reconstructed image in the iterative process of PET reconstruction.
本文将图象噪声滤波器分为最佳滤波器、自适应加权均值滤波器和顺序统计滤波器三类。
The image noise filters are classified into optimal filters, adaptive weighted mean filters, and order statistics filters.
本文将图象噪声滤波器分为最佳滤波器、自适应加权均值滤波器和顺序统计滤波器三类。
The image noise filters are classified into optimal filters, adaptive weighted mean filters, and order statistics filters.
应用推荐