Create a job

A JOB

POST https://api.playment.io/v1/projects/:project_id/jobs

This endpoint allows you to create a job

Path Parameters

NameTypeDescription

project_id

string

ID of the project in which you want to create the job

Headers

NameTypeDescription

x-api-key

string

API key for authentication

Request Body

NameTypeDescription

batch_id

string

A batch is a way to organize multiple jobs under one batch_id. You can create new batches from the dashboard or by using the batch creation API. If batch_id is left empty or the key is not present, the job is created in the Default batch in your project.

work_flow_id

string

The ID of the workflow inside which you want to create the job

data

object

The data object contains all the information and attachments required to label a job. The data object is defined below

reference_id

string

The unique identifier of the job

{
  "data": {
    "job_id": "3f3e8675-ca69-46d7-aa34-96f90fcbb732",
    "reference_id": "001",
    "work_flow_id": "2aae1234-acac-1234-eeff-12a22a237bbc"
  },
  "success": true
}

Payload

{  
   "reference_id":"001",
   "data":{
     "video_data": {
      "frames": [
        {
          "frame_id": "frame001",
          "src": "https://dummyimage.com/600x400/000/fff.jpg&text=Dummy+Image+1"
        },
        {
          "frame_id": "frame002",
          "src": "https://dummyimage.com/600x400/000/fff.jpg&text=Dummy+Image+2"
        },
        {
          "frame_id": "frame003",
          "src": "https://dummyimage.com/600x400/000/fff.jpg&text=Dummy+Image+3"
        },
        {
          "frame_id": "frame004",
          "src": "https://dummyimage.com/600x400/000/fff.jpg&text=Dummy+Image+4"
        },
        {
          "frame_id": "frame005",
          "src": "https://dummyimage.com/600x400/000/fff.jpg&text=Dummy+Image+5"
        }
      ]
    }
   },
   "work_flow_id":"2aae1234-acac-1234-eeff-12a22a237bbc"
}

Code Example

import requests
import json

"""
Details for creating JOBS,
project_id  ->> ID of project in which the job will be created
x_api_key   ->> API key for authentication 
workflow_id ->> The workflow in which the job will be created
batch_id    ->> The batch in which job will be created
"""

# Additional helper function to create a batch
def create_batch(BATCH_NAME):
    base_url = f"https://api.playment.io/v1/projects/{PROJECT_ID}/batch"
    DATA = {"name":BATCH_NAME}
    response = requests.post(base_url, headers={'x-api-key': CLIENT_KEY}, json=DATA)
    response_data = response.json()
    if response.status_code >= 500:
        raise Exception(f"Something went wrong at Playment's end {response.status_code}")
    if 400 <= response.status_code < 500:
        raise Exception(f"{response_data['error']['message']} {response.status_code}")
    print(response_data)
    return response_data
    
#method that can be used to call the job creation api
def create_job(project_id, data, x_api_key):
    base_url = "https://api.playment.io/v1/projects/{}/jobs".format(project_id)
    headers = {'x-api-key': x_api_key}
    response = requests.post(base_url, headers=headers, json=data)
    
    print(response.json())
    if response.status_code >= 500:
        raise Exception(response.text)
    if 400 <= response.status_code < 500:
        raise Exception(response.text)
    return response.json()

if __name__ == "__main__":
    #list of frames in a single job
 
    frames = ["https://example.com/image_url_1","https://example.com/image_url_2","https://example.com/image_url_3"]
    
    #reference_id should be unique for each job
    reference_id= "job1"

    project_id = ''
    x_api_key = ''
    workflow_id = ''
    batch_id = ''
    

    video_data = {'frames' : []}

    i=0
    for frame_url in frames:
        i=i+1
        frame_id = "frame"+str(i)      
        frame_obj = {'src':frame_url,'frame_id':frame_id}
        video_data['frames'].append(frame_obj)
    job_data = {
                'reference_id':reference_id,
                'work_flow_id':workflow_id,
                'data':{'video_data':video_data},
                'batch_id' : batch_id
                }
    

    
    response = create_job(project_id=project_id, data=job_data, x_api_key= x_api_key)
    print(response)

Creating jobs with pre-labeled data

If you have data which has been labeled previously by an ML model or by human labelers, you can create jobs with such labels already created. To do this, you need to send the annotation data in the data.maker_response key in the payload. The annotation data needs to be in Playment's annotation format.

Here's an example

{  
   "reference_id":"001",
   "data":{
     "video_data": {
      "frames": [...]
     },
     "maker_response" : {
        "video2d": {
           "data": {
              "annotations": []
           }
        }
     }
   },
   "work_flow_id":"2aae1234-acac-1234-eeff-12a22a237bbc"
}

The data.maker_response.video_2d.data.annotations list contains objects, where each object is a tracker. A tracker tracks an object across frames. The frames key in the tracker object maps each annotation object in the tracker to the frame_id it belongs to. 

{
  "_id": "",
  "type": "rectangle", // rectangle/polygon/line/cuboid/landmark
  "label": "Cat",
  "frames" : {
    "frame001" : {<annotation_object>}
  }
}

You can check the structure for various annotation_object below:

{
  "_id": "0e6d895e-2484-439a-b62b-d8a0afb3d190",
  "label": "".
  "attributes": {
    "pose": {
      "value": "standing"
    },
    "breed": {
      "value": "Persian"
    }
  }
  "coordinates": [
    {"x": 0.00398, "y": 0.00558},
    {"x": 0.05404, "y": 0.00558},
    {"x": 0.05404, "y": 0.09096},
    {"x": 0.00398, "y": 0.09096}
  ]
}

In our annotation output, the x and y coordinates are normalised to ensure consistency across different image sizes. Normalisation is crucial for accurately representing object positions relative to the image dimensions.

X and Y Coordinates:

  • X Coordinate:

    • Normalised x coordinates (Xnorm​Xnorm​) are calculated using the formula: Xnorm=Xraw/ImageWidthXnorm = Xraw / Image Width

    • The result ranges from 0.0 to 1.0, where 0.0(Origin) corresponds to the leftmost edge of the image, and 1.0 corresponds to the rightmost edge.

  • Y Coordinate:

    • Normalised y coordinates (Ynorm​Ynorm​) are calculated using the formula: Ynorm=Yraw/ImageHeightYnorm = Yraw / Image Height

    • The result ranges from 0.0 to 1.0, where 0.0(Origin) corresponds to the topmost edge of the image, and 1.0 corresponds to the bottommost edge.

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