Compuholic

import tensorflow as tf


def random_mask_boxes(image, num_boxes, box_area_fraction, aspect_ratio_range=(0.3, 3.0), seed=12345):
    """
    Applies random black box masks to an RGB image tensor.

    Args:
        image: A TensorFlow tensor of shape [H, W, 3] representing an RGB image.
        num_boxes: Integer, the number of black boxes to place.

Compuholic

import tensorflow as tf


class FocalCrossentropy(tf.keras.losses.Loss):
    def __init__(self,
                 from_logits=False,
                 alpha=0.25,
                 gamma=2.0,
                 label_smoothing=0.0,
                 axis=-1,