extract make_* functions out of make_*_loader

Author: pmeier

test/common_utils.py

@@ -492,6 +492,34 @@ def get_num_channels(color_space):
     return num_channels
 
 
+def make_image(
+    spatial_size,
+    *,
+    color_space="RGB",
+    batch_dims=(),
+    dtype=torch.float32,
+    device="cpu",
+    constant_alpha=True,
+    memory_format=torch.contiguous_format,
+):
+    spatial_size = _parse_spatial_size(spatial_size)
+    num_channels = get_num_channels(color_space)
+    max_value = get_max_value(dtype)
+
+    data = torch.testing.make_tensor(
+        (*batch_dims, num_channels, *spatial_size),
+        low=0,
+        high=max_value,
+        dtype=dtype,
+        device=device,
+        memory_format=memory_format,
+    )
+    if color_space in {"GRAY_ALPHA", "RGBA"} and constant_alpha:
+        data[..., -1, :, :] = max_value
+
+    return datapoints.Image(data)
+
+
 def make_image_loader(
     size="random",
     *,
@@ -505,20 +533,20 @@ def make_image_loader(
     num_channels = get_num_channels(color_space)
 
     def fn(shape, dtype, device, memory_format):
-        max_value = get_max_value(dtype)
-        data = torch.testing.make_tensor(
-            shape, low=0, high=max_value, dtype=dtype, device=device, memory_format=memory_format
+        *batch_dims, _, spatial_size = shape
+        return make_image(
+            spatial_size,
+            color_space=color_space,
+            batch_dims=batch_dims,
+            dtype=dtype,
+            device=device,
+            constant_alpha=constant_alpha,
+            memory_format=memory_format,
         )
-        if color_space in {"GRAY_ALPHA", "RGBA"} and constant_alpha:
-            data[..., -1, :, :] = max_value
-        return datapoints.Image(data)
 
     return ImageLoader(fn, shape=(*extra_dims, num_channels, *size), dtype=dtype, memory_format=memory_format)
 
 
-make_image = from_loader(make_image_loader)
-
-
 def make_image_loaders(
     *,
     sizes=DEFAULT_SPATIAL_SIZES,