opencv - OpenCV 中训练有素的级联

Question

我无法正确训练分类器。当我使用生成的 cascade.xml 时，无法识别对象。相反，对象的某些部分是。

训练的命令行是这样的:

opencv_traincascade -data data -vec samples.vec -bg negatives.txt -numPos 200 -numNeg 100 -numStages 13 -w 80 -h 80 -featureType LBP -minHitRate 0.999 -maxFalseAlarmRate 0.5

虽然训练输出看起来像这样:

===== TRAINING 10-stage =====
<BEGIN
POS count : consumed   200 : 200
NEG count : acceptanceRatio    100 : 0.00586029
Precalculation time: 2
+----+---------+---------+
|  N |    HR   |    FA   |
+----+---------+---------+
|   1|        1|        1|
+----+---------+---------+
|   2|        1|     0.09|
+----+---------+---------+
END>
Training until now has taken 0 days 0 hours 6 minutes 9 seconds.

===== TRAINING 11-stage =====
<BEGIN
POS count : consumed   200 : 200
NEG count : acceptanceRatio    100 : 0.00724585
Precalculation time: 3
+----+---------+---------+
|  N |    HR   |    FA   |
+----+---------+---------+
|   1|        1|        1|
+----+---------+---------+
|   2|        1|     0.09|
+----+---------+---------+
END>
Training until now has taken 0 days 0 hours 6 minutes 49 seconds.

===== TRAINING 12-stage =====
<BEGIN

当我用它来检测我的物体时(在我的例子中，物体是方向盘)，结果是:

Answer 1

对于尺寸为 80x80 的图像，您使用的图像太少作为样本。 我会最小化图像的尺寸，同时添加更多样本。 另一件事是负面形象的集合。你用什么作为负样本？尝试通过添加错误检测 block 来扩大负片图像集。