Custom Vision API

Question

我想计算下图中的人数，我相信可以使用Microsoft vision api或custom vision api，但是现在我无法登录微软认知服务。
任何人都可以确认，MS认知服务是否可能？

Answer 1

目前，通过Microsoft Cognitive Services提供的任何Vision API都不支持计算图像中的对象。

Answer 2

您可以使用此网址自行测试 - https://azure.microsoft.com/en-us/services/cognitive-services/computer-vision/ - ＆gt;去'认识名人和地标' 这就是输出

{
"categories": [
{
  "name": "plant_tree",
  "score": 0.45703125,
  "detail": null
}
],
"adult": null,
"tags": [
{
  "name": "grass",
  "confidence": 0.99937587976455688
},
{
  "name": "field",
  "confidence": 0.94717073440551758
},
{
  "name": "people",
  "confidence": 0.65122932195663452
},
{
  "name": "grassy",
  "confidence": 0.546949565410614
},
{
  "name": "lush",
  "confidence": 0.11115188896656036
}
],
"description": {
"tags": [
  "grass",
  "kite",
  "field",
  "flying",
  "people",
  "grassy",
  "large",
  "soccer",
  "group",
  "man",
  "green",
  "walking",
  "dog",
  "playing",
  "many",
  "hill",
  "woman",
  "blue",
  "standing",
  "crowd",
  "ball"
 ],
 "captions": [
  {
    "text": "a group of people flying kites in a field",
    "confidence": 0.7429714961690741
  }
 ]
 },


 "requestId": "ba0592e6-1449-450e-a00f-a551ed0da4a8",
  "metadata": {
    "width": 160,
    "height": 120,
    "format": "Jpeg"
  },



"faces": [],
  "color": {
    "dominantColorForeground": "Green",
    "dominantColorBackground": "Green",
    "dominantColors": [
      "Green"
    ],
    "accentColor": "718E39",
    "isBWImg": false
  },
  "imageType": {
    "clipArtType": 0,
    "lineDrawingType": 0
  }
}

它识别出置信度为0.65％的人

我尝试使用更清晰的图像，以“面孔”的形式获得了人数enter image description here

Answer 3

Custom Vision API和Computer Vision API现在都支持对象检测功能。

如果您具有现有数据集或可以标记数据集，则可以使用Custom Vision来训练模型，然后在看不见的图像中检测相似的人。如果您不需要一般的检测器，也可以接受培训，则可以使用Computer Vision API。