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.

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。

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Introduces color feature extraction and matching algorithms in content-based image retrieval, such as weighted Euclidean-distance, weighted centre distance, histogram intersection algorithm, etc.

介绍了基于内容图像检索中多种颜色的特征提取和匹配算法，以及加权欧几里得距离、中心距的加权距离、直方图交集算法等。

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Color space, color quantization and color feature extraction are the main techniques in image retrieval based on color feature.

基于颜色特征的图像检索技术主要包括颜色空间的选择、颜色量化方法及颜色特征的提取。

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