Iris feature extraction is based on texture analysis using multi - channel gabor - wavelet filtering 特征提取阶段，采用多方向多频率的gabor滤波器来进行图像纹理特征分析。
2.
The multi - frequency data will be used by the international scientific community to better understand the global environment and how it is changing 这些多频率的数据将被国际科学界用于更好地了解全球环境及其变化。
