Using Existing Building Blocks

First, please make sure you have signed up for a Sieve account as per the quickstart guide.

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Install the Sieve CLI

pip install https://mango.sievedata.com/v1/client_package/sievedata-0.0.1.1.2-py3-none-any.whl

Then, export your Sieve API key as an environment variable. You can find your API key in the Sieve dashboard.

export SIEVE_API_KEY=YOUR_API_KEY

Sieve allows users to reference existing building blocks in their workflows. Below are a few sample building blocks that you can use to create a workflow.

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Video Splitter: sieve-developer/video-splitter

Splits a sieve.Video into a stream of sieve.Image objects with extra metadata such as frame_number and fps accessible as img.fps and img.frame_number.

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YOLOv5 Object Detector: sieve-developer/yolo

Detects objects in an image using YOLOv5. Returns a list of dictionaries with the following keys: box, class_name, score, and frame_number.

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SORT Object Tracker: sieve-developer/sort

Takes a list of boxes in a video and returns a dictionary of “objects” indexed by ID, where each value of the dictionary is a list of boxes for that object.

A page to view all available building blocks is still under development. In the meantime, you can view all available building blocks used in template workflows here or check out models in the examples repository which have all been deployed under the sieve-developer user.

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Create a Workflow

Create a new folder and add the files below.

import sieve
from typing import Dict, Tuple
from yolo import Yolo
from tracker import SORT
from splitter import VideoSplitter
from visualizer import draw_boxes

@sieve.workflow(name="yolo_object_tracking")
def yolosplit(video: sieve.Video) -> Dict:
    images = sieve.reference("sieve-developer/video-splitter")(video)
    yolo_outputs = sieve.reference("sieve-developer/yolo")(images)
    return sieve.reference("sieve-developer/sort")(yolo_outputs)

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Deploy the Workflow

Create some of the files above in a separate folder. Now go into the folder and run the following command. You can monitor the status via your terminal or on the Sieve dashboard.

sieve deploy

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Run the Workflow

There are many ways to trigger the workflow. See this section for more details.