picMatch matching for the pictures with a enviromental dataset,#ORB,DBOW,Tree of Words#,detectes the descriptors and 1. train the dictionary of enviromental dataset. 2. match the imput picture with the dataset 3. find the most biggest N scores 4. calculate the effective numbers of match for every pairs of matches using VFC 5. get the most likely result 商标牌的寻找 1.先找到包含商标牌的近似区域
