dash-annotate-cv 0.1.3

A Python library for computer vision annotation tasks using Dash

Dash Annotate CV - A dash library for computer vision annotation tasks

dash_annotate_cv is a Python Dash library for computer vision annotation tasks. It exposes reusable annotation components in a library format for dash.

Supported tasks:

• Annotation of images (whole image labels)

Roadmap for future tasks:

• Annotating multiple labels per image
• Annotating bounding boxes
• Annotating videos
• Annotating tags

Note: this library is not meant for production usage. It is meant to be used for quick prototyping and testing of annotation tasks.

Getting started

1. (Recommended) Create a new conda environment.

   conda create -n dash_annotate_cv python=3.11
   conda activate dash_annotate_cv
   

2. Install requirements.

   pip install -r requirements.txt
   

3. Install the library.

   pip install -e .
   

4. Run the example.

   cd examples
   python example.py
   

Example

You can also check out the examples.

from dash import Dash, html
from dash_annotate_cv import AnnotateImageLabelsAIO, ImageSource, LabelSource, AnnotationStorage, ImageAnnotations
import dash_bootstrap_components as dbc
from skimage import data

# Load some images
images = [ ("chelsea",data.chelsea()), ("astronaut",data.astronaut()), ("camera",data.camera()) ]

# Set up the image and label sources
image_source = ImageSource(images=images)
label_source = LabelSource(labels=["astronaut", "camera", "cat"])

# Set up writing
storage = AnnotationStorage(storage_type=AnnotationStorage.Type.JSON, json_file="annotations.json")

app = Dash(__name__, external_stylesheets=[dbc.themes.BOOTSTRAP])
app.layout = dbc.Container([
    html.H1("Annotate Images"),
    AnnotateImageLabelsAIO(label_source, image_source, annotation_storage=storage)
    ])
app.run(debug=True)

The result is shown in the gif above.

Loading the annotations & format

Loading the annotations is as simple as:

with open("annotations.json","r") as f:
    annotations = ImageAnnotations.from_dict(json.load(f))

See the ImageAnnotations class for more information on the format.

Dev

All-in-one components for Dash Image annotation in Dash