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 | 1 | initial version |
wow, tested your code on 2.4.2:
a.size = 45, b.size = 45
idx=0 ? 0 = 0.026906
a.size = 80, b.size = 45
idx=0 ? 1 = 0.134866
a.size = 57, b.size = 45
idx=0 ? 2 = 0.19551
a.size = 45, b.size = 58
idx=2 ? 0 = 0.159511
a.size = 80, b.size = 58
idx=2 ? 1 = 0.015596
a.size = 57, b.size = 58
idx=2 ? 2 = 0.345972
a.size = 45, b.size = 53
idx=3 ? 0 = 0.199465
a.size = 80, b.size = 53
idx=3 ? 1 = 0.34338
a.size = 57, b.size = 53
idx=3 ? 2 = 0.0130037
the first thing matchShapes() does, is to calculate the hu-moments for both contours, and , as of 2.4.9, they're both all 0.
pretty sure, you found a bug.
| | 2 | No.2 Revision |
wow, tested your code on 2.4.2:
a.size = 45, b.size = 45
idx=0 ? 0 = 0.026906
a.size = 80, b.size = 45
idx=0 ? 1 = 0.134866
a.size = 57, b.size = 45
idx=0 ? 2 = 0.19551
a.size = 45, b.size = 58
idx=2 ? 0 = 0.159511
a.size = 80, b.size = 58
idx=2 ? 1 = 0.015596
a.size = 57, b.size = 58
idx=2 ? 2 = 0.345972
a.size = 45, b.size = 53
idx=3 ? 0 = 0.199465
a.size = 80, b.size = 53
idx=3 ? 1 = 0.34338
a.size = 57, b.size = 53
idx=3 ? 2 = 0.0130037
the first thing matchShapes() does, is to calculate the hu-moments for both contours, and , as of 2.4.9, they're both all 0.
pretty sure, you found a bug.
Update:
the bug seems to be in :
void cv::HuMoments( const Moments& m, double hu[7] )
m.nu30 , m.nu12, m.nu21, m.nu03, etc are taken for granted, but never got initialized properly
i think, some code-fragment similar to cvGetHuMoments() went awol.