说明：  在本文中，提出了一个新的图像特征表示--grouplet。grouplet可以捕获图像的结构化信息，通过编码大量的辨别的视觉特征和空间配置。
(In this paper,we propose a new image feature representation called “grouplet”. The grouplet captures the structured information of an image by encoding a number of discriminative visual features and their spatial confi gurations )