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bubble函数
相关语句
  bubble function
    The result shows that there is a better effect by using Bubble function to construct wavelet base, and this found a good basis for controlling the melting depth, the seam tracking and so on.
    试验结果表明 ,用Bubble函数构造的小波基对提取熔池边缘效果较好 ,为熔深控制、焊缝跟踪等奠定了坚实的基础。
短句来源
    In this paper,edge-detect by Bubble function passed zero edge-detect method is studied.
    由于传统的边缘检测算子如梯度算子、拉普拉斯算子、Sobel算子等对噪声敏感,采用了Bubble函数过零点检测来提取焊缝图像边缘的小波多尺度方法。
短句来源
  bubble function
    The result shows that there is a better effect by using Bubble function to construct wavelet base, and this found a good basis for controlling the melting depth, the seam tracking and so on.
    试验结果表明 ,用Bubble函数构造的小波基对提取熔池边缘效果较好 ,为熔深控制、焊缝跟踪等奠定了坚实的基础。
短句来源
    In this paper,edge-detect by Bubble function passed zero edge-detect method is studied.
    由于传统的边缘检测算子如梯度算子、拉普拉斯算子、Sobel算子等对噪声敏感,采用了Bubble函数过零点检测来提取焊缝图像边缘的小波多尺度方法。
短句来源
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  bubble function
Convergence of simplified and stabilized mixed element formats based on bubble function for the stokes problem
      
Two simplified and stabilized mixed element formats for the Stokes problem are derived by bubble function, and their convergence, i.
      
Motivated by this discovery, a new SDFEM is developed based on a special choice of the stabilization bubble function.
      
It is found that, irrespective of the degree of mean and the rotational pressure interpolation, the linear triangle mesh, with or without central bubble function (incompatible mode), locks when both the constraints are enforced simultaneously.
      
In order to satisfy the inf-sup condition we need to add to the usual piecewise quadratics a cubic bubble function.
      
更多          
  bubble function
Convergence of simplified and stabilized mixed element formats based on bubble function for the stokes problem
      
Two simplified and stabilized mixed element formats for the Stokes problem are derived by bubble function, and their convergence, i.
      
Motivated by this discovery, a new SDFEM is developed based on a special choice of the stabilization bubble function.
      
It is found that, irrespective of the degree of mean and the rotational pressure interpolation, the linear triangle mesh, with or without central bubble function (incompatible mode), locks when both the constraints are enforced simultaneously.
      
In order to satisfy the inf-sup condition we need to add to the usual piecewise quadratics a cubic bubble function.
      
更多          


There are a lot of arc light noise and spatter point noise in the images using the CCD to capture CO_2 arc welding pool. It is difficult to detecte accurately the edge of the images on the melting pool. Median filter and multiplication are used to reduce the noise of the CO_2 arc welding image. Basing on the zero crossing and Trous algorithm, we have researched into a detecting method and its algorithm by using the Bubble function, compared and analyzed the influence of different scales wavelet on the effect...

There are a lot of arc light noise and spatter point noise in the images using the CCD to capture CO_2 arc welding pool. It is difficult to detecte accurately the edge of the images on the melting pool. Median filter and multiplication are used to reduce the noise of the CO_2 arc welding image. Basing on the zero crossing and Trous algorithm, we have researched into a detecting method and its algorithm by using the Bubble function, compared and analyzed the influence of different scales wavelet on the effect of the edge detection. The result shows that there is a better effect by using Bubble function to construct wavelet base, and this found a good basis for controlling the melting depth, the seam tracking and so on.

在用CCD捕获的CO2 焊熔池图像中存在大量的弧光噪声和飞溅形成的点噪声 ,要准确地检测熔池图像的边缘较为困难。首先采用中值滤波和乘法运算对CO2 焊图像进行降噪处理。基于零交叉边缘检测方法和多孔算法 ,研究了熔池边缘的Bubble小波检测方法及算法实现 ,对比分析了不同小波尺度对边缘检测结果的影响。试验结果表明 ,用Bubble函数构造的小波基对提取熔池边缘效果较好 ,为熔深控制、焊缝跟踪等奠定了坚实的基础。

In this paper,edge-detect by Bubble function passed zero edge-detect method is studied.Via adjustinging the value of the scale parameter,it can reduce noise effectively and improve efficacy of edge-detect of cored wired welding underwater.

由于传统的边缘检测算子如梯度算子、拉普拉斯算子、Sobel算子等对噪声敏感,采用了Bubble函数过零点检测来提取焊缝图像边缘的小波多尺度方法。通过调整尺度参数σ的值,得到焊缝边缘提取效果最好的σ的范围是:0.4≤σ≤0.6,有效降低了噪声,同时又较好地保持了焊缝边缘细节,在水下药芯焊接焊缝边缘检测中获得较好的效果。

 
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