其二是真实焊点影像的特征萃取与分类，论文中所提出之特征组是由影像区域分割与影像区域平均亮度两类所组合而成。
The second stage is the feature extraction from real solder images under the designed illumination, and the feature set proposed includes the partitioned regions and weighted areas.
彩色胶片上的亮度和颜色是不可分割的。
介绍了一种新的彩色图像亮度特征、彩色特征及梯度特征的提取方法，并应用这种方法对珍珠图像进行分割，取得良好效果。
A new method was introduced for feature extraction of the Brightness, color and gradient, and succeeded in the application of segmenting the segmentation of pearl image.
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