In grey-scale model, mean and variance are main feature statistical measures;in texture model, the energy, entropy, contrast, local homogeneity and correlation are main feature statistical measures.

• 均值和方差是灰度模型中重要的特征统计量，而能量、熵、对比度、局部相似性和相关性是纹理模型中重要的特征统计量。