Generating_Goejason.py

def getGeojson():
    # Store the mask coordinates into a geojson file
    bounds = getImgBounds()
    dataset = rasterio.open(png_path)          
    bands = [1]
    data = dataset.read(bands)
    transform = rasterio.transform.from_bounds(bounds[0], bounds[1], bounds[2], bounds[3], data.shape[1], data.shape[2])
    crs = rasterio.crs.CRS({"init": "epsg:4326"})   # 3857 Google Maps Projection    4326  World wide (3D)
    with MemoryFile() as memfile:
        meta = {"count": 1, "width": data.shape[1], "height": data.shape[2], "transform": transform, "nodata": 0, "crs": crs, "dtype":data.dtype}
        with memfile.open(driver='GTiff', **meta) as dataset:
            dataset.write(data)
            band=dataset.read()
            mask = band!= 0

    shapes = features.shapes(band, mask=mask, transform=transform)
    fc = ({"geometry": shape, "properties": {"value": value}} for shape, value in shapes)
    gdf = gpd.GeoDataFrame.from_features(fc)  #.to_file(os.path.join(self.output_path, f'm_{self.lat}_{self.lng}.geojson'), driver='GeoJSON')
    gdf.crs = "epsg:4326"

        
    return gdf