Knowledge base

Image classification — Step-by-step instructions

The challenge

We have a set of real-life photos of cats and dogs. We need to classify them according to what animal is shown in the picture: cats and dogs. We ask performers to look at the pictures and decide what animal is in the picture. Here’s what this might look like:

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a project

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a task pool

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with data

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control tasks

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the pool

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results

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Interface code


{
  "view": {
    "type": "view.list",
    "items": [
      {
        "type": "view.image",
        "ratio": [
          1,
          1
        ],
        "rotatable": true,
        "url": {
          "type": "data.input",
          "path": "image"
        }
      },
      {
        "type": "field.button-radio-group",
        "label": "Is it a cat or a dog?",
        "options": [
          {
            "label": "Cat",
            "value": "cat"
          },
          {
            "label": "Dog",
            "value": "dog"
          },
          {
            "label": "Other",
            "value": "other"
          }
        ],
        "validation": {
          "type": "condition.required",
          "hint": "choose one of the options"
        },
        "data": {
          "type": "data.output",
          "path": "result"
        }
      }
    ]
  },
  "plugins": [
    {
      "type": "plugin.toloka",
      "layout": {
        "kind": "scroll",
        "taskWidth": 500
      }
    },
    {
      "1": {
        "type": "action.set",
        "data": {
          "type": "data.output",
          "path": "result"
        },
        "payload": "cat"
      },
      "2": {
        "type": "action.set",
        "data": {
          "type": "data.output",
          "path": "result"
        },
        "payload": "dog"
      },
      "3": {
        "type": "action.set",
        "data": {
          "type": "data.output",
          "path": "result"
        },
        "payload": "other"
      },
      "type": "plugin.hotkeys"
    }
  ]
}

Create a project

Create a task pool

Upload a file with data

Create control tasks

Launch the pool

Get the results