Regarding the circular defects such as leakage gnarl in log, this paper designed an improved Laplaces special gradient method to clarify the target image.
针对原木中的漏节等圆形缺陷，本文设计了改进的拉普拉斯算子法增强图像中目标的清晰度。
The industrial test and application of SLON 1500 vertical circular and pulsed high gradient magnetic separator were introduced, the advantages and existed problems of the equipment were summarized.
介绍了SLON - 1500立环脉动高梯度磁选机的工业试验和应用情况，总结了该设备的优点及存在的问题。
A novel gradient orientation histogram was built using a Gaussian-weighted circular window and a major orientation to each feature point was assigned based on local image properties.
构建了一种新的局部梯度方向直方图，同时定义了特征点的主方向，从而提出了一种具有旋转不变性的图像配准算法。
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