dhog: fixed exact SIFT smoothing bug
dhog: fixed exact SIFT smoothing bug

j-bo/vlfeat,richarddzh/vlfeat,richarddzh/vlfeat,rxl194/vlfeat,cvfish/vlfeat,j-bo/vlfeat,richarddzh/vlfeat,WangDequan/vlfeat,hongzhili/vlfeat,vlfeat/vlfeat,CansenJIANG/vlfeat,WangDequan/vlfeat,cvfish/vlfeat,rxl194/vlfeat,qubick/vlfeat,cvfish/vlfeat,hongzhili/vlfeat,WangDequan/vlfeat,rxl194/vlfeat,erexhepa/vlfeat,qubick/vlfeat,vlfeat/vlfeat,mylxiaoyi/vlfeat,j-bo/vlfeat,rxl194/vlfeat,CansenJIANG/vlfeat,mylxiaoyi/vlfeat,vlfeat/vlfeat,vlfeat/vlfeat,erexhepa/vlfeat,erexhepa/vlfeat,hongzhili/vlfeat,qubick/vlfeat,hongzhili/vlfeat,WangDequan/vlfeat,qubick/vlfeat,cvfish/vlfeat,qubick/vlfeat,rxl194/vlfeat,j-bo/vlfeat,erexhepa/vlfeat,cvfish/vlfeat,vlfeat/vlfeat,j-bo/vlfeat,mylxiaoyi/vlfeat,mylxiaoyi/vlfeat,WangDequan/vlfeat,erexhepa/vlfeat,mylxiaoyi/vlfeat,qubick/vlfeat,mylxiaoyi/vlfeat,richarddzh/vlfeat,hongzhili/vlfeat,richarddzh/vlfeat,erexhepa/vlfeat,CansenJIANG/vlfeat,CansenJIANG/vlfeat,vlfeat/vlfeat,WangDequan/vlfeat,richarddzh/vlfeat,rxl194/vlfeat,CansenJIANG/vlfeat,hongzhili/vlfeat,cvfish/vlfeat,CansenJIANG/vlfeat