Tensorflows object_detection项目的标签图包含90个类，尽管COCO只有80个类别。
因此，所有样本配置中的参数num_classes都设置为90。
如果我现在下载并使用COCO 2017数据集，是否需要将此参数设置为80或将其保留为90？
如果80（因为COCO有80个班级）我需要调整标签图，所以标准mscoco_label_map.pbtxt不正确，对吗？
如果有人能对这一点发光，我会非常感激：）
以下是标准的80 COCO课程：
person
bicycle
car
motorbike
aeroplane
bus
train
truck
boat
traffic light
fire hydrant
stop sign
parking meter
bench
bird
cat
dog
horse
sheep
cow
elephant
bear
zebra
giraffe
backpack
umbrella
handbag
tie
suitcase
frisbee
skis
snowboard
sports ball
kite
baseball bat
baseball glove
skateboard
surfboard
tennis racket
bottle
wine glass
cup
fork
knife
spoon
bowl
banana
apple
sandwich
orange
broccoli
carrot
hot dog
pizza
donut
cake
chair
sofa
pottedplant
bed
diningtable
toilet
tvmonitor
laptop
mouse
remote
keyboard
cell phone
microwave
oven
toaster
sink
refrigerator
book
clock
vase
scissors
teddy bear
hair drier
toothbrush
以下是Tensorflows object_detection API的MS COCO标签图：
item {
name: "/m/01g317"
id: 1
display_name: "person"
}
item {
name: "/m/0199g"
id: 2
display_name: "bicycle"
}
item {
name: "/m/0k4j"
id: 3
display_name: "car"
}
item {
name: "/m/04_sv"
id: 4
display_name: "motorcycle"
}
item {
name: "/m/05czz6l"
id: 5
display_name: "airplane"
}
item {
name: "/m/01bjv"
id: 6
display_name: "bus"
}
item {
name: "/m/07jdr"
id: 7
display_name: "train"
}
item {
name: "/m/07r04"
id: 8
display_name: "truck"
}
item {
name: "/m/019jd"
id: 9
display_name: "boat"
}
item {
name: "/m/015qff"
id: 10
display_name: "traffic light"
}
item {
name: "/m/01pns0"
id: 11
display_name: "fire hydrant"
}
item {
name: "/m/02pv19"
id: 13
display_name: "stop sign"
}
item {
name: "/m/015qbp"
id: 14
display_name: "parking meter"
}
item {
name: "/m/0cvnqh"
id: 15
display_name: "bench"
}
item {
name: "/m/015p6"
id: 16
display_name: "bird"
}
item {
name: "/m/01yrx"
id: 17
display_name: "cat"
}
item {
name: "/m/0bt9lr"
id: 18
display_name: "dog"
}
item {
name: "/m/03k3r"
id: 19
display_name: "horse"
}
item {
name: "/m/07bgp"
id: 20
display_name: "sheep"
}
item {
name: "/m/01xq0k1"
id: 21
display_name: "cow"
}
item {
name: "/m/0bwd_0j"
id: 22
display_name: "elephant"
}
item {
name: "/m/01dws"
id: 23
display_name: "bear"
}
item {
name: "/m/0898b"
id: 24
display_name: "zebra"
}
item {
name: "/m/03bk1"
id: 25
display_name: "giraffe"
}
item {
name: "/m/01940j"
id: 27
display_name: "backpack"
}
item {
name: "/m/0hnnb"
id: 28
display_name: "umbrella"
}
item {
name: "/m/080hkjn"
id: 31
display_name: "handbag"
}
item {
name: "/m/01rkbr"
id: 32
display_name: "tie"
}
item {
name: "/m/01s55n"
id: 33
display_name: "suitcase"
}
item {
name: "/m/02wmf"
id: 34
display_name: "frisbee"
}
item {
name: "/m/071p9"
id: 35
display_name: "skis"
}
item {
name: "/m/06__v"
id: 36
display_name: "snowboard"
}
item {
name: "/m/018xm"
id: 37
display_name: "sports ball"
}
item {
name: "/m/02zt3"
id: 38
display_name: "kite"
}
item {
name: "/m/03g8mr"
id: 39
display_name: "baseball bat"
}
item {
name: "/m/03grzl"
id: 40
display_name: "baseball glove"
}
item {
name: "/m/06_fw"
id: 41
display_name: "skateboard"
}
item {
name: "/m/019w40"
id: 42
display_name: "surfboard"
}
item {
name: "/m/0dv9c"
id: 43
display_name: "tennis racket"
}
item {
name: "/m/04dr76w"
id: 44
display_name: "bottle"
}
item {
name: "/m/09tvcd"
id: 46
display_name: "wine glass"
}
item {
name: "/m/08gqpm"
id: 47
display_name: "cup"
}
item {
name: "/m/0dt3t"
id: 48
display_name: "fork"
}
item {
name: "/m/04ctx"
id: 49
display_name: "knife"
}
item {
name: "/m/0cmx8"
id: 50
display_name: "spoon"
}
item {
name: "/m/04kkgm"
id: 51
display_name: "bowl"
}
item {
name: "/m/09qck"
id: 52
display_name: "banana"
}
item {
name: "/m/014j1m"
id: 53
display_name: "apple"
}
item {
name: "/m/0l515"
id: 54
display_name: "sandwich"
}
item {
name: "/m/0cyhj_"
id: 55
display_name: "orange"
}
item {
name: "/m/0hkxq"
id: 56
display_name: "broccoli"
}
item {
name: "/m/0fj52s"
id: 57
display_name: "carrot"
}
item {
name: "/m/01b9xk"
id: 58
display_name: "hot dog"
}
item {
name: "/m/0663v"
id: 59
display_name: "pizza"
}
item {
name: "/m/0jy4k"
id: 60
display_name: "donut"
}
item {
name: "/m/0fszt"
id: 61
display_name: "cake"
}
item {
name: "/m/01mzpv"
id: 62
display_name: "chair"
}
item {
name: "/m/02crq1"
id: 63
display_name: "couch"
}
item {
name: "/m/03fp41"
id: 64
display_name: "potted plant"
}
item {
name: "/m/03ssj5"
id: 65
display_name: "bed"
}
item {
name: "/m/04bcr3"
id: 67
display_name: "dining table"
}
item {
name: "/m/09g1w"
id: 70
display_name: "toilet"
}
item {
name: "/m/07c52"
id: 72
display_name: "tv"
}
item {
name: "/m/01c648"
id: 73
display_name: "laptop"
}
item {
name: "/m/020lf"
id: 74
display_name: "mouse"
}
item {
name: "/m/0qjjc"
id: 75
display_name: "remote"
}
item {
name: "/m/01m2v"
id: 76
display_name: "keyboard"
}
item {
name: "/m/050k8"
id: 77
display_name: "cell phone"
}
item {
name: "/m/0fx9l"
id: 78
display_name: "microwave"
}
item {
name: "/m/029bxz"
id: 79
display_name: "oven"
}
item {
name: "/m/01k6s3"
id: 80
display_name: "toaster"
}
item {
name: "/m/0130jx"
id: 81
display_name: "sink"
}
item {
name: "/m/040b_t"
id: 82
display_name: "refrigerator"
}
item {
name: "/m/0bt_c3"
id: 84
display_name: "book"
}
item {
name: "/m/01x3z"
id: 85
display_name: "clock"
}
item {
name: "/m/02s195"
id: 86
display_name: "vase"
}
item {
name: "/m/01lsmm"
id: 87
display_name: "scissors"
}
item {
name: "/m/0kmg4"
id: 88
display_name: "teddy bear"
}
item {
name: "/m/03wvsk"
id: 89
display_name: "hair drier"
}
item {
name: "/m/012xff"
id: 90
display_name: "toothbrush"
}
编辑：在仔细比较两个列表后，很明显它们都包含相同的80个类，但默认情况下标签映射tensorflow使用了10个类ID，看似随机分布。
有人知道为什么会这样吗？
答案 0 :(得分：0)
MSCOCO论文描述了该数据集实际上有91个类别，但是在2014年数据集中，他们仅发布了80个类别的子集，因为它们没有注释其余11个类别的细分。似乎张量流模型是使用90个类训练的。
MSCOCO文件：https://arxiv.org/pdf/1405.0312.pdf
摘自附录II：“我们的数据集包含91个对象类别（2014年发行版包含其中80个类别的细分蒙版）。”
-里卡多
答案 1 :(得分：0)
您不需要将80更改为90，我认为配置中的num_classes只是对象类的最大ID。更多内容请参考https://github.com/tensorflow/models/issues/1719