请问以图搜图有没有推荐的算法 - V2EX
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fff333

请问以图搜图有没有推荐的算法

  •  
  •   fff333 Jul 18, 2019 via Android 5088 views
    This topic created in 2475 days ago, the information mentioned may be changed or developed.
    大概 20w 张的儿童图画书图片,希望能用牌照的方式检索出来。
    7 replies    2019-12-24 08:19:09 +08:00
    leopku
        1
    leopku  
       Jul 18, 2019 via iPhone   1
    imagehash
    moodasmood
        2
    moodasmood  
       Jul 18, 2019 via Android
    给图片绑定 tag,用 tag 搜
    unhumanplane
        3
    unhumanplane  
       Jul 18, 2019
    图片 hash+faiss,有技术有条件可以上 dl 提特征
    xwhxbg
        4
    xwhxbg  
       Jul 18, 2019
    一种常见的做法是用 k 最近邻居算法,因为图就是矩阵,即一个广义的向量,可以定义欧氏距离,也可以定义图片的每个位置的像素的差值之和作为距离,所以只需要找出距离最近的 k 个邻居,就是相似的图片
    ynkchen
        5
    yunkchen  
       Jul 18, 2019
    直接使用 pHash,泛化性能很差,稍微裁剪 or 旋转就检索不出;可以使用结合深度学习的 Deep Hash,这方面的论文可以搜索 kw:CBIR
    vtoexshan
        6
    vtoexshan  
       Jul 29, 2019
    最好能让机器做一次分类,人分类太累太 boring
    bbsabc2
        7
    bbsabc2  
       Dec 24, 2019
    拿来一个 vgg 模型,抽调最后一层 , 对图片进行一个 predict,得到图片的 1000 维向量,然后保存起来。

    新来一个图片,同样进行 predict,然后计算向量的距离,按距离排列就是 以图搜图
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