Module ocrtoolkit.datasets.imageds

Expand source code 
from typing import List, Union

import numpy as np
from PIL import Image

from ocrtoolkit.datasets.base import BaseDS
from ocrtoolkit.utilities.img_utils import bytes_to_pil, pil_to_bytes, tfm_to_pil


class ImageDS(BaseDS):
    """Allows iterating through list of images
    Applies transformations to each image
    Can be iterated through like a list
    """

    source: Union[Image.Image, np.ndarray, List[Image.Image], List[np.ndarray]] = None
    items: Union[List[Image.Image], List[np.ndarray]] = None

    def _setup_items(self):
        """If source is a single image, converts to list"""
        if isinstance(self.source, (Image.Image, np.ndarray)):
            self.items = [self.source]
        else:
            self.items = self.source
        # make source point to None to allow saving
        self.source = None

    def _setup_names(self):
        self.names = [f"Image: {i}" for i in range(len(self.items))]

    @staticmethod
    def _serialize_items(items):
        return [np.asarray(pil_to_bytes(tfm_to_pil(item))) for item in items]

    @staticmethod
    def _deserialize_items(items):
        return [bytes_to_pil(item) for item in items]

Classes

class ImageDS (source=None, items=None, names=None, tfms=None, size=(640, 320), apply_gs=True, batched=False)

Allows iterating through list of images Applies transformations to each image Can be iterated through like a list

Expand source code 
class ImageDS(BaseDS):
    """Allows iterating through list of images
    Applies transformations to each image
    Can be iterated through like a list
    """

    source: Union[Image.Image, np.ndarray, List[Image.Image], List[np.ndarray]] = None
    items: Union[List[Image.Image], List[np.ndarray]] = None

    def _setup_items(self):
        """If source is a single image, converts to list"""
        if isinstance(self.source, (Image.Image, np.ndarray)):
            self.items = [self.source]
        else:
            self.items = self.source
        # make source point to None to allow saving
        self.source = None

    def _setup_names(self):
        self.names = [f"Image: {i}" for i in range(len(self.items))]

    @staticmethod
    def _serialize_items(items):
        return [np.asarray(pil_to_bytes(tfm_to_pil(item))) for item in items]

    @staticmethod
    def _deserialize_items(items):
        return [bytes_to_pil(item) for item in items]

Ancestors

Class variables

var items : Union[List[PIL.Image.Image], List[numpy.ndarray]]
var source : Union[PIL.Image.Image, numpy.ndarray, List[PIL.Image.Image], List[numpy.ndarray]]

Inherited members