利用SIFT算法进行多特征点检测，检测结果中出现重点现象，影响了后续筛选特征点,想要请教一下各位怎样能够去除重复点，只保留一个。
[48.4639, 209.797]
[48.4639, 209.797]
[54.4864, 209.566]
[54.4864, 209.566]
[144.529, 205.185]
[150.948, 204.768]
[150.948, 204.768]
[236.977, 200.757]
[236.977, 200.757]
[336.485, 196.371]
[336.485, 196.371]
[417.69, 192.915]
[417.69, 192.915]
[418.016, 192.909]
[418.016, 192.909]
[499.797, 189.1]
[586.477, 184.704]
[593.273, 184.255]
[672.289, 179.791]
[672.289, 179.791]
[678.318, 179.539]
[678.318, 179.539]
[753.746, 175.647]
[753.746, 175.647]
[759.146, 175.466]
[835.67, 170.635]
[843.83, 169.835]
[843.83, 169.835]
[923.366, 164.027]
[930.494, 163.462]
[930.494, 163.462]
[999.423, 156.996]
[999.423, 156.996]
[1089.77, 148.357]
[1162.98, 140.067]
[1242.17, 131.349]
[1242.17, 131.349]
[1248.59, 130.583]
[1248.59, 130.583]
[1325.2, 122.195]
[1325.2, 122.195]
[1334.75, 121.187]
[1334.75, 121.187]
[1509.89, 103.391]
[1509.89, 103.391]
[1509.89, 103.391]
[1596.29, 95.382]
[1596.29, 95.382]
[1698.46, 86.4408]
[1698.46, 86.4408]
去除重复的特征点，方便后期筛选