Recognition performance (mean accuracy ± standard deviation) of the VLADs with the k-means and ours (hard objective) codebooks on the Birds, corresponding to the Fig 4.

Recognition performance (mean accuracy ± standard deviation) of the VLADs with the k-means and ours (hard objective) codebooks on the Birds, corresponding to the Fig 4.本结果对应图4，呈现了在鸟类数据集上，使用K均值（k-means）码本与我们提出的硬目标（hard objective）码本的VLAD（局部聚合描述符向量，Vector of Locally Aggregated Descriptors）的识别性能（平均准确率±标准差）。