发明名称 |
IMAGE PATTERN RECOGNITION SYSTEM AND METHOD |
摘要 |
An image pattern recognition method detects a pattern in a sequence of video images or individual images from detected interest points. Feature vectors are extracted with video data from video regions around the interest points. A forest of decision trees is used to compute a set of bin values in histograms with bins corresponding to leaf nodes of the decision trees. Each bin value is a sum of contributions computed for individual interest points. Non-binary decision functions are used to compute the contributions and node dependent scale values are used to compute the arguments of the non-binary decision functions. The node dependent scale values may be computed from standard deviations of feature values found for the nodes, multiplied by a factor that is common to the nodes. This factor may be adjusted by feedback so that it can be set differently for different detection classes. |
申请公布号 |
EP2936392(A1) |
申请公布日期 |
2015.10.28 |
申请号 |
EP20130818514 |
申请日期 |
2013.12.20 |
申请人 |
NEDERLANDSE ORGANISATIE VOOR TOEGEPAST- NATUURWETENSCHAPPELIJK ONDERZOEK TNO |
发明人 |
BURGHOUTS, GERARDUS JOHANNES |
分类号 |
G06K9/62 |
主分类号 |
G06K9/62 |
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