Replace RandomGenerator with SeedGenerator (keras-team#2150)

* upload updated aug layers

* reformat and resolve error

* add more layers

* add aug_mix

* code reformat

* add few more layers

* add more layers

* add more layers#

* add more layers

* correct errors#

* remove force generator

* Update aug layers (keras-team#2147)

* Replace random_generator

* Replace random_genereator

* resolve dropblock error

* update base_augmentation_layer_3d and all subclasses

* fix random inversion test

* Fix format and tests

* Fix Keras 2 tests with Seed Gen

---------

Co-authored-by: divyashreepathihalli <divyashreepathihalli@gmail.com>

benchmarks/vectorized_jittered_resize.py

@@ -20,6 +20,7 @@
 from tensorflow import keras
 
 from keras_cv import bounding_box
+from keras_cv.backend import random
 from keras_cv.layers import JitteredResize
 from keras_cv.layers.preprocessing.base_image_augmentation_layer import (
     BaseImageAugmentationLayer,
@@ -258,8 +259,8 @@ def test_consistency_with_old_impl(self):
 
         # makes offsets fixed to (0.5, 0.5)
         with unittest.mock.patch.object(
-            layer._random_generator,
-            "random_uniform",
+            random,
+            "uniform",
             return_value=tf.convert_to_tensor([[0.5, 0.5]]),
         ):
             output = layer(image)

benchmarks/vectorized_mosaic.py

@@ -20,6 +20,7 @@
 from tensorflow import keras
 
 from keras_cv import bounding_box
+from keras_cv.backend import random
 from keras_cv.layers import Mosaic
 from keras_cv.layers.preprocessing.base_image_augmentation_layer import (
     BaseImageAugmentationLayer,
@@ -101,7 +102,7 @@ def _batch_augment(self, inputs):
             minval=0,
             maxval=batch_size,
             dtype=tf.int32,
-            seed=self._random_generator.make_legacy_seed(),
+            seed=random.make_seed(seed=self._seed_generator),
         )
         # concatenate the batches with permutation order to get all 4 images of
         # the mosaic

benchmarks/vectorized_random_crop.py

@@ -21,6 +21,7 @@
 from tensorflow import keras
 
 from keras_cv import bounding_box
+from keras_cv.backend import random
 from keras_cv.layers import RandomCrop
 from keras_cv.layers.preprocessing.base_image_augmentation_layer import (
     BaseImageAugmentationLayer,
@@ -72,7 +73,9 @@ def get_random_transformation(self, image=None, **kwargs):
         h_diff = image_shape[H_AXIS] - self.height
         w_diff = image_shape[W_AXIS] - self.width
         dtype = image_shape.dtype
-        rands = self._random_generator.random_uniform([2], 0, dtype.max, dtype)
+        rands = random.uniform(
+            [2], 0, dtype.max, dtype, seed=self._seed_generator
+        )
         h_start = rands[0] % (h_diff + 1)
         w_start = rands[1] % (w_diff + 1)
         return {"top": h_start, "left": w_start}

benchmarks/vectorized_random_flip.py

@@ -20,6 +20,7 @@
 from tensorflow import keras
 
 from keras_cv import bounding_box
+from keras_cv.backend import random
 from keras_cv.layers import RandomFlip
 from keras_cv.layers.preprocessing.base_image_augmentation_layer import (
     BaseImageAugmentationLayer,
@@ -102,11 +103,11 @@ def get_random_transformation(self, **kwargs):
         flip_vertical = False
         if self.horizontal:
             flip_horizontal = (
-                self._random_generator.random_uniform(shape=[]) > 0.5
+                random.uniform(shape=[], seed=self._seed_generator) > 0.5
             )
         if self.vertical:
             flip_vertical = (
-                self._random_generator.random_uniform(shape=[]) > 0.5
+                random.uniform(shape=[], seed=self._seed_generator) > 0.5
             )
         return {
             "flip_horizontal": tf.cast(flip_horizontal, dtype=tf.bool),
@@ -236,14 +237,14 @@ def test_consistency_with_old_impl(self):
         )
 
         with unittest.mock.patch.object(
-            layer._random_generator,
-            "random_uniform",
+            random,
+            "uniform",
             return_value=tf.convert_to_tensor([[0.6]]),
         ):
             output = layer(image)
         with unittest.mock.patch.object(
-            old_layer._random_generator,
-            "random_uniform",
+            random,
+            "uniform",
             return_value=tf.convert_to_tensor(0.6),
         ):
             old_output = old_layer(image)

benchmarks/vectorized_random_hue.py

@@ -63,7 +63,7 @@ def __init__(self, factor, value_range, seed=None, **kwargs):
         self.seed = seed
 
     def get_random_transformation(self, **kwargs):
-        invert = preprocessing_utils.random_inversion(self._random_generator)
+        invert = preprocessing_utils.random_inversion(self._seed_generator)
         # We must scale self.factor() to the range [-0.5, 0.5]. This is because
         # the tf.image operation performs rotation on the hue saturation value
         # orientation. This can be thought of as an angle in the range

benchmarks/vectorized_random_rotation.py

@@ -20,6 +20,7 @@
 from tensorflow import keras
 
 from keras_cv import bounding_box
+from keras_cv.backend import random
 from keras_cv.layers import RandomRotation
 from keras_cv.layers.preprocessing.base_image_augmentation_layer import (
     BaseImageAugmentationLayer,
@@ -122,8 +123,11 @@ def __init__(
     def get_random_transformation(self, **kwargs):
         min_angle = self.lower * 2.0 * np.pi
         max_angle = self.upper * 2.0 * np.pi
-        angle = self._random_generator.random_uniform(
-            shape=[1], minval=min_angle, maxval=max_angle
+        angle = random.uniform(
+            shape=[1],
+            minval=min_angle,
+            maxval=max_angle,
+            seed=self._seed_generator,
         )
         return {"angle": angle}
 

benchmarks/vectorized_random_shear.py

@@ -107,7 +107,7 @@ def _get_shear_amount(self, constraint):
         if constraint is None:
             return None
 
-        invert = preprocessing.random_inversion(self._random_generator)
+        invert = preprocessing.random_inversion(self._seed_generator)
         return invert * constraint()
 
     def augment_image(self, image, transformation=None, **kwargs):

benchmarks/vectorized_random_translation.py

@@ -20,6 +20,7 @@
 from keras import backend
 from tensorflow import keras
 
+from keras_cv.backend import random
 from keras_cv.layers import RandomTranslation
 from keras_cv.layers.preprocessing.base_image_augmentation_layer import (
     BaseImageAugmentationLayer,
@@ -217,17 +218,19 @@ def augment_image(self, image, transformation, **kwargs):
 
     def get_random_transformation(self, image=None, **kwargs):
         batch_size = 1
-        height_translation = self._random_generator.random_uniform(
+        height_translation = random.uniform(
             shape=[batch_size, 1],
             minval=self.height_lower,
             maxval=self.height_upper,
             dtype=tf.float32,
+            seed=self._seed_generator,
         )
-        width_translation = self._random_generator.random_uniform(
+        width_translation = random.uniform(
             shape=[batch_size, 1],
             minval=self.width_lower,
             maxval=self.width_upper,
             dtype=tf.float32,
+            seed=self._seed_generator,
         )
         return {
             "height_translation": height_translation,

benchmarks/vectorized_random_zoom.py

@@ -20,6 +20,7 @@
 from keras import backend
 from tensorflow import keras
 
+from keras_cv.backend import random
 from keras_cv.layers import RandomZoom
 from keras_cv.layers.preprocessing.base_image_augmentation_layer import (
     BaseImageAugmentationLayer,
@@ -143,16 +144,18 @@ def __init__(
         self.seed = seed
 
     def get_random_transformation(self, image=None, **kwargs):
-        height_zoom = self._random_generator.random_uniform(
+        height_zoom = random.uniform(
             shape=[1, 1],
             minval=1.0 + self.height_lower,
             maxval=1.0 + self.height_upper,
+            seed=self._seed_generator,
         )
         if self.width_factor is not None:
-            width_zoom = self._random_generator.random_uniform(
+            width_zoom = random.uniform(
                 shape=[1, 1],
                 minval=1.0 + self.width_lower,
                 maxval=1.0 + self.width_upper,
+                seed=self._seed_generator,
             )
         else:
             width_zoom = height_zoom

benchmarks/vectorized_randomly_zoomed_crop.py

@@ -19,6 +19,7 @@
 from tensorflow import keras
 
 from keras_cv import core
+from keras_cv.backend import random
 from keras_cv.layers import RandomlyZoomedCrop
 from keras_cv.layers.preprocessing.base_image_augmentation_layer import (
     BaseImageAugmentationLayer,
@@ -109,18 +110,20 @@ def get_random_transformation(
 
         new_width = crop_size[1] * tf.sqrt(aspect_ratio)
 
-        height_offset = self._random_generator.random_uniform(
+        height_offset = random.uniform(
             (),
             minval=tf.minimum(0.0, original_height - new_height),
             maxval=tf.maximum(0.0, original_height - new_height),
             dtype=tf.float32,
+            seed=self._seed_generator,
         )
 
-        width_offset = self._random_generator.random_uniform(
+        width_offset = random.uniform(
             (),
             minval=tf.minimum(0.0, original_width - new_width),
             maxval=tf.maximum(0.0, original_width - new_width),
             dtype=tf.float32,
+            seed=self._seed_generator,
         )
 
         new_height = new_height / original_height

keras_cv/backend/random.py

@@ -27,23 +27,30 @@ def __init__(self, seed=None, **kwargs):
                 seed=seed, **kwargs
             )
         else:
-            self._current_seed = [0, seed]
+            self._current_seed = [seed, 0]
 
     def next(self, ordered=True):
         if keras_3():
             return self._seed_generator.next(ordered=ordered)
         else:
-            self._current_seed[0] += 1
+            self._current_seed[1] += 1
             return self._current_seed[:]
 
 
-def normal(shape, mean=0.0, stddev=1.0, dtype=None, seed=None):
+def make_seed(seed=None):
     if isinstance(seed, SeedGenerator):
-        seed = seed.next()
-        init_seed = seed[0] + seed[1]
+        seed_0, seed_1 = seed.next()
+        if seed_0 is None:
+            init_seed = seed_1
+        else:
+            init_seed = seed_0 + seed_1
     else:
         init_seed = seed
+    return init_seed
 
+
+def normal(shape, mean=0.0, stddev=1.0, dtype=None, seed=None):
+    init_seed = make_seed(seed)
     kwargs = {}
     if dtype:
         kwargs["dtype"] = dtype
@@ -68,11 +75,7 @@ def normal(shape, mean=0.0, stddev=1.0, dtype=None, seed=None):
 
 
 def uniform(shape, minval=0.0, maxval=1.0, dtype=None, seed=None):
-    if isinstance(seed, SeedGenerator):
-        seed = seed.next()
-        init_seed = seed[0] + seed[1]
-    else:
-        init_seed = seed
+    init_seed = make_seed(seed)
     kwargs = {}
     if dtype:
         kwargs["dtype"] = dtype
@@ -97,12 +100,7 @@ def uniform(shape, minval=0.0, maxval=1.0, dtype=None, seed=None):
 
 
 def shuffle(x, axis=0, seed=None):
-    if isinstance(seed, SeedGenerator):
-        seed = seed.next()
-        init_seed = seed[0] + seed[1]
-    else:
-        init_seed = seed
-
+    init_seed = make_seed(seed)
     if keras_3():
         return keras.random.shuffle(x=x, axis=axis, seed=init_seed)
     else:
@@ -112,11 +110,7 @@ def shuffle(x, axis=0, seed=None):
 
 
 def categorical(logits, num_samples, dtype=None, seed=None):
-    if isinstance(seed, SeedGenerator):
-        seed = seed.next()
-        init_seed = seed[0] + seed[1]
-    else:
-        init_seed = seed
+    init_seed = make_seed(seed)
     kwargs = {}
     if dtype:
         kwargs["dtype"] = dtype

keras_cv/layers/preprocessing/aug_mix.py

@@ -16,6 +16,7 @@
 
 from keras_cv import layers
 from keras_cv.api_export import keras_cv_export
+from keras_cv.backend import random
 from keras_cv.layers.preprocessing.base_image_augmentation_layer import (
     BaseImageAugmentationLayer,
 )
@@ -106,32 +107,41 @@ def _sample_from_dirichlet(self, alpha):
         gamma_sample = tf.random.gamma(
             shape=(),
             alpha=alpha,
-            seed=self._random_generator.make_legacy_seed(),
+            seed=random.make_seed(seed=self._seed_generator),
         )
         return gamma_sample / tf.reduce_sum(
             gamma_sample, axis=-1, keepdims=True
         )
 
     def _sample_from_beta(self, alpha, beta):
         sample_alpha = tf.random.gamma(
-            (), alpha=alpha, seed=self._random_generator.make_legacy_seed()
+            (),
+            alpha=alpha,
+            seed=random.make_seed(seed=self._seed_generator),
         )
         sample_beta = tf.random.gamma(
-            (), alpha=beta, seed=self._random_generator.make_legacy_seed()
+            (),
+            alpha=beta,
+            seed=random.make_seed(seed=self._seed_generator),
         )
         return sample_alpha / (sample_alpha + sample_beta)
 
     def _sample_depth(self):
-        return self._random_generator.random_uniform(
+        return random.uniform(
             shape=(),
             minval=self.chain_depth[0],
             maxval=self.chain_depth[1] + 1,
             dtype=tf.int32,
+            seed=self._seed_generator,
         )
 
     def _loop_on_depth(self, depth_level, image_aug):
-        op_index = self._random_generator.random_uniform(
-            shape=(), minval=0, maxval=8, dtype=tf.int32
+        op_index = random.uniform(
+            shape=(),
+            minval=0,
+            maxval=8,
+            dtype=tf.int32,
+            seed=self._seed_generator,
         )
         image_aug = self._apply_op(image_aug, op_index)
         depth_level += 1
@@ -204,7 +214,7 @@ def _solarize(self, image):
 
     def _shear_x(self, image):
         x = tf.cast(self.severity_factor() * 0.3, tf.float32)
-        x *= preprocessing.random_inversion(self._random_generator)
+        x *= preprocessing.random_inversion(self._seed_generator)
         transform_x = layers.RandomShear._format_transform(
             [1.0, x, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0]
         )
@@ -214,7 +224,7 @@ def _shear_x(self, image):
 
     def _shear_y(self, image):
         y = tf.cast(self.severity_factor() * 0.3, tf.float32)
-        y *= preprocessing.random_inversion(self._random_generator)
+        y *= preprocessing.random_inversion(self._seed_generator)
         transform_x = self._format_random_shear_transform(
             [1.0, 0.0, 0.0, y, 1.0, 0.0, 0.0, 0.0]
         )
@@ -231,7 +241,7 @@ def _translate_x(self, image):
         shape = tf.cast(tf.shape(image), tf.float32)
         x = tf.cast(self.severity_factor() * shape[1] / 3, tf.float32)
         x = tf.expand_dims(tf.expand_dims(x, axis=0), axis=0)
-        x *= preprocessing.random_inversion(self._random_generator)
+        x *= preprocessing.random_inversion(self._seed_generator)
         x = tf.cast(x, tf.int32)
 
         translations = tf.cast(
@@ -246,7 +256,7 @@ def _translate_y(self, image):
         shape = tf.cast(tf.shape(image), tf.float32)
         y = tf.cast(self.severity_factor() * shape[0] / 3, tf.float32)
         y = tf.expand_dims(tf.expand_dims(y, axis=0), axis=0)
-        y *= preprocessing.random_inversion(self._random_generator)
+        y *= preprocessing.random_inversion(self._seed_generator)
         y = tf.cast(y, tf.int32)
 
         translations = tf.cast(