Ransac算法

通过Ransac算法剔除噪声点，用最小二乘法拟合直线和不剔除噪声点拟合直线之间的比较。

%%How many outside points fit the model judging by the distance from the point to the line%%
%Consensus_Setx     The original x Bureau points
%Consensus_Sety     The original y Bureau points
%Maybe_outliersx    The x Outlier
%Maybe_outliersy    The y Outlier
%line_vec           Linear coefficient
%point_line_dis     Point-to-line distance threshold
function [Re_Consensus_Set2dRe_Consensus_Set3d] = AgreeWithModel（Consensus_SetxConsensus_SetyMaybe_outliersxMaybe_outliersyline_vecpoint_line_dis）
Consensus_Set_temx = Consensus_Setx;                %Temporary variables are saved
Consensus_Set_temy = Consensus_Sety;
[mn] = size（Maybe_outliersx）;
for i=1:m
    distem = abs（line_vec（11）*Maybe_outliersx（i1）+line_vec（12）-Maybe_outliersy（i1））/sqrt（line_vec（11）^2+1）;%Judge the distance from the point to the line
    if （distem < point_line_dis）
        Consensus_Set_temx = [Consensus_Set_temx;Maybe_outliersx（i1）];
        Consensus_Set_temy = [Consensus_Set_temy;Maybe_outliersy（i1）];
    end
end
Re_Consensus_Set2d = Consensus_Set_temx;
Re_Consensus_Set3d = Consensus_Set_temy;

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2018-02-28 22:49  Ransac_ls\
     文件        1254  2018-02-28 22:21  Ransac_ls\ransactest.m
     目录           0  2018-02-28 22:54  __MACOSX\
     目录           0  2018-02-28 22:54  __MACOSX\Ransac_ls\
     文件         210  2018-02-28 22:21  __MACOSX\Ransac_ls\._ransactest.m
     文件         300  2018-02-06 21:21  Ransac_ls\ls.m
     文件         266  2018-02-06 21:21  __MACOSX\Ransac_ls\._ls.m
     文件        1726  2018-02-06 23:55  Ransac_ls\RandomNData.m
     文件         120  2018-02-06 23:55  __MACOSX\Ransac_ls\._RandomNData.m
     文件         357  2018-02-06 23:44  Ransac_ls\NumInVec.m
     文件         120  2018-02-06 23:44  __MACOSX\Ransac_ls\._NumInVec.m
     文件         276  2018-02-07 00:01  Ransac_ls\ls_test.m
     文件         210  2018-02-07 00:01  __MACOSX\Ransac_ls\._ls_test.m
     文件        1116  2018-02-06 23:41  Ransac_ls\AgreeWithModel.m
     文件         120  2018-02-06 23:41  __MACOSX\Ransac_ls\._AgreeWithModel.m