[Relay][Dynamic] Add Dynamic Resize Op

python/tvm/relay/op/dyn/__init__.py

@@ -20,3 +20,5 @@
 from . import _algorithm
 from . import _transform
 from . import _tensor
+
+from .import image

python/tvm/relay/op/dyn/image/__init__.py

@@ -0,0 +1,20 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+# pylint: disable=wildcard-import, redefined-builtin, invalid-name
+"""The Relay namespace containing dynamic image ops."""
+
+from . import _image

python/tvm/relay/op/dyn/image/_image.py

@@ -0,0 +1,76 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+#pylint: disable=invalid-name, unused-argument
+"""Backend compiler related feature registration"""
+from __future__ import absolute_import
+
+import tvm.topi
+from tvm.runtime import convert
+from tvm.te.hybrid import script
+from tvm.topi.util import nchw_pack_layout, nchw_xc_layout
+from ... import op as reg
+
+
+# resize
+@reg.register_compute("dyn.image.resize")
+def compute_resize(attrs, inputs, out_type):
+    layout = attrs.layout
+    method = attrs.method
+    coord_trans = attrs.coordinate_transformation_mode
+    out_dtype = attrs.out_dtype
+    return [
+        tvm.topi.image.resize(inputs[0], inputs[1], layout, method, coord_trans, out_dtype,
+                              out_type.shape)
+    ]
+
+
+reg.register_injective_schedule("dyn.image.resize")
+
+
+@script
+def _NCHW_resize_shape_func(dshape, size, ndim):
+    out = output_tensor((ndim, ), "int64")
+    for i in const_range(ndim):
+        out[i] = int64(dshape[i])
+    out[2] = int64(size[0])
+    out[3] = int64(size[1])
+    return out
+
+
+@script
+def _NHWC_resize_shape_func(dshape, size, ndim):
+    out = output_tensor((ndim, ), "int64")
+    for i in const_range(ndim):
+        out[i] = int64(dshape[i])
+    out[1] = int64(size[0])
+    out[2] = int64(size[1])
+    return out
+
+
+@reg.register_shape_func("dyn.image.resize", True)
+def resize_shape_func(attrs, inputs, _):
+    """
+    Shape function for dyn.image.resize op.
+    """
+    layout = attrs.layout
+    if layout == 'NHWC':
+        out = [_NHWC_resize_shape_func(inputs[0].shape, inputs[1], convert(len(inputs[0].shape)))]
+    elif (layout == 'NCHW') or nchw_pack_layout(layout) or nchw_xc_layout(layout):
+        out = [_NCHW_resize_shape_func(inputs[0].shape, inputs[1], convert(len(inputs[0].shape)))]
+    else:
+        raise ValueError("Resize Unsupported Layout", layout)
+    return out

python/tvm/relay/op/dyn/image/_make.py

@@ -0,0 +1,20 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+"""Constructor APIs"""
+import tvm._ffi
+
+tvm._ffi._init_api("relay.op.dyn.image._make", __name__)

python/tvm/relay/op/image/image.py

@@ -16,6 +16,9 @@
 # under the License.
 """Image operations."""
 from . import _make
+from ..dyn.image import _make as _dyn_make
+from ...expr import Expr
+
 
 def resize(data,
            size,
@@ -38,7 +41,7 @@ def resize(data,
     data : relay.Expr
         The input data to the operator.
 
-    size: Tuple of Expr
+    size: Tuple of Int or Expr
         The out size to which the image will be resized.
 
     layout : str, optional
@@ -61,6 +64,9 @@ def resize(data,
     result: relay.Expr
         The resized result.
     """
+    if isinstance(size, Expr):
+        return _dyn_make.resize(data, size, layout, method, coordinate_transformation_mode,
+                                out_dtype)
     return _make.resize(data, size, layout, method, coordinate_transformation_mode, out_dtype)
 
 
@@ -156,8 +162,8 @@ def crop_and_resize(data,
     result: relay.Expr
         The computed result.
     """
-    return _make.crop_and_resize(data, boxes, box_indices, crop_size,
-                                 layout, method, extrapolation_value, out_dtype)
+    return _make.crop_and_resize(data, boxes, box_indices, crop_size, layout, method,
+                                 extrapolation_value, out_dtype)
 
 
 def dilation2d(data,
@@ -213,8 +219,8 @@ def dilation2d(data,
         The computed result.
     """
 
-    return _make.dilation2d(data, weight, strides, padding, dilations, data_layout,
-                            kernel_layout, out_dtype)
+    return _make.dilation2d(data, weight, strides, padding, dilations, data_layout, kernel_layout,
+                            out_dtype)
 
 
 def affine_grid(data, target_shape=None):
@@ -239,6 +245,7 @@ def affine_grid(data, target_shape=None):
     """
     return _make.affine_grid(data, target_shape)
 
+
 def grid_sample(data, grid, method='bilinear', layout='NCHW'):
     """Applies bilinear sampling to input feature map.
 

python/tvm/topi/image/resize.py

@@ -491,7 +491,7 @@ def _cast_output(value, data_dtype="float32", out_dtype=None):
 
 
 def resize(data, size, layout="NCHW", method="bilinear",
-           coordinate_transformation_mode="half_pixel", out_dtype=None):
+           coordinate_transformation_mode="half_pixel", out_dtype=None, output_shape=None):
     """Perform resize operation on the data.
 
     Parameters
@@ -519,6 +519,9 @@ def resize(data, size, layout="NCHW", method="bilinear",
     out_dtype: string, optional
         Type to return. If left None will be same as input type.
 
+    output_shape: optional
+        Shape to return. If left None will be inferred
+
     Returns
     -------
     output : tvm.te.Tensor
@@ -528,19 +531,22 @@ def resize(data, size, layout="NCHW", method="bilinear",
     """
 
     method = method.lower()
-
     if layout == 'NHWC':
         in_n, in_h, in_w, in_c = data.shape
-        output_shape = [in_n, size[0], size[1], in_c]
+        if output_shape is None:
+            output_shape = [in_n, size[0], size[1], in_c]
     elif layout == 'NCHW':
         in_n, in_c, in_h, in_w = data.shape
-        output_shape = [in_n, in_c, size[0], size[1]]
+        if output_shape is None:
+            output_shape = [in_n, in_c, size[0], size[1]]
     elif nchw_pack_layout(layout):# for NCHWinic
         in_n, in_c, in_h, in_w, in_inum, in_ic = data.shape
-        output_shape = [in_n, in_c, size[0], size[1], in_inum, in_ic]
+        if output_shape is None:
+            output_shape = [in_n, in_c, size[0], size[1], in_inum, in_ic]
     elif nchw_xc_layout(layout):# for NCHWxc
         in_n, in_c, in_h, in_w, in_cc = data.shape
-        output_shape = [in_n, in_c, size[0], size[1], in_cc]
+        if output_shape is None:
+            output_shape = [in_n, in_c, size[0], size[1], in_cc]
     else:
         raise ValueError('%s layout is not supported.' % layout)
 

src/relay/op/dyn/image/resize.cc

@@ -0,0 +1,109 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+/*!
+ * \file resize.cc
+ * \brief Image resize operators
+ */
+#include <tvm/relay/attrs/image.h>
+#include <tvm/relay/op.h>
+#include <tvm/tir/data_layout.h>
+
+#include "../../op_common.h"
+
+namespace tvm {
+namespace relay {
+namespace dyn {
+
+TVM_REGISTER_NODE_TYPE(ResizeAttrs);
+
+bool ResizeRel(const Array<Type>& types, int num_inputs, const Attrs& attrs,
+               const TypeReporter& reporter) {
+  // {data, size, out}
+  CHECK_EQ(types.size(), 3);
+  const auto* data = types[0].as<TensorTypeNode>();
+  if (data == nullptr) return false;
+
+  static const Layout kNCHW("NCHW");
+
+  const ResizeAttrs* param = attrs.as<ResizeAttrs>();
+  CHECK(param != nullptr);
+  const Layout in_layout(param->layout);
+  auto layout_converter = tir::BijectiveLayout(in_layout, kNCHW);
+  CHECK(layout_converter.defined())
+      << "Resize only support input layouts that are convertible from NCHW."
+      << " But got " << in_layout;
+
+  auto oshape = layout_converter.ForwardShape(data->shape);
+  oshape.Set(2, Any());
+  oshape.Set(3, Any());
+
+  DataType out_dtype = param->out_dtype;
+  if (out_dtype.bits() == 0) {
+    out_dtype = data->dtype;
+  }
+
+  // assign output type
+  reporter->Assign(types[2], TensorType(layout_converter.BackwardShape(oshape), out_dtype));
+  return true;
+}
+
+// Positional relay function to create image operator
+// used by frontend FFI.
+Expr MakeResize(Expr data, Expr size, String layout, String method,
+                String coordinate_transformation_mode, DataType out_dtype) {
+  auto attrs = make_object<ResizeAttrs>();
+  attrs->layout = std::move(layout);
+  attrs->method = std::move(method);
+  attrs->coordinate_transformation_mode = coordinate_transformation_mode;
+  attrs->out_dtype = out_dtype;
+  static const Op& op = Op::Get("dyn.image.resize");
+  return Call(op, {data, size}, Attrs(attrs), {});
+}
+
+TVM_REGISTER_GLOBAL("relay.op.dyn.image._make.resize").set_body_typed(MakeResize);
+
+RELAY_REGISTER_OP("dyn.image.resize")
+    .describe(R"code(Perform resize to input array with nearest neighbour or bilinear interpolation.
+
+- **data**: data is 4D array of shape
+            (batch_size, channels, in_height, in_width) for NCHW
+            (batch_size, in_height, in_width, channels) for NHWC
+
+- **size**: data is 2D array of shape (2,) with values
+            (new_height, new_width)
+
+- **out**: Output is 4D array of shape
+           for layout NCHW
+           (batch_size, channels, size[0], size[1])
+
+           for layout NHWC
+           (batch_size, size[0], size[1], channels)
+)code" TVM_ADD_FILELINE)
+    .set_attrs_type<ResizeAttrs>()
+    .set_num_inputs(2)
+    .add_argument("data", "Tensor", "The input tensor.")
+    .add_argument("size", "Tensor", "The output size tensor.")
+    .set_support_level(5)
+    .add_type_rel("DynResize", ResizeRel)
+    .set_attr<TOpPattern>("TOpPattern", kInjective);
+
+}  // namespace dyn
+}  // namespace relay
+}  // namespace tvm

src/relay/op/image/resize.cc

@@ -25,6 +25,7 @@
 #include <tvm/relay/op.h>
 #include <tvm/tir/data_layout.h>
 
+#include "../make_op.h"
 #include "../op_common.h"
 
 namespace tvm {

src/relay/op/make_op.h

@@ -80,6 +80,9 @@ Expr MakeZeros(Array<Integer> shape, DataType dtype);
 
 Expr MakeOneHot(Expr indices, Expr on_value, Expr off_value, int depth, int axis, DataType dtype);
 
+Expr MakeResize(Expr data, Array<IndexExpr> size, String layout, String method,
+                String coordinate_transformation_mode, DataType out_dtype);
+
 }  // namespace relay
 }  // namespace tvm
 #endif  // TVM_RELAY_OP_MAKE_OP_H_

src/relay/transforms/dynamic_to_static.cc

@@ -23,6 +23,7 @@
  * \brief Rewrite Dynamic Operations to Static operations where possible
  */
 #include <tvm/relay/attrs/algorithm.h>
+#include <tvm/relay/attrs/image.h>
 #include <tvm/relay/expr_functor.h>
 #include <tvm/relay/transform.h>
 
@@ -98,6 +99,21 @@ class DynamicToStaticMutator : public MixedModeMutator {
            }
            return Expr(nullptr);
          }},
+        {Op::Get("dyn.image.resize"),
+         [](const CallNode* call_node) {
+           if (const ConstantNode* size = call_node->args[1].as<ConstantNode>()) {
+             const ResizeAttrs* param = call_node->attrs.as<ResizeAttrs>();
+             CHECK(param);
+             auto size_int = ToVector(size->data);
+             Array<PrimExpr> size_prim;
+             for (size_t i = 0; i < size_int.size(); ++i) {
+               size_prim.push_back(size_int[i]);
+             }
+             return MakeResize(call_node->args[0], size_prim, param->layout, param->method,
+                               param->coordinate_transformation_mode, param->out_dtype);
+           }
+           return Expr(nullptr);
+         }},
     };
   }