Added wrapper around color change function

mindspore/ccsrc/minddata/dataset/api/transforms.cc

@@ -35,6 +35,8 @@
 #include "minddata/dataset/kernels/image/random_solarize_op.h"
 #include "minddata/dataset/kernels/image/random_vertical_flip_op.h"
 #include "minddata/dataset/kernels/image/resize_op.h"
+#include "minddata/dataset/kernels/image/rgba_to_bgr_op.h"
+#include "minddata/dataset/kernels/image/rgba_to_rgb_op.h"
 #include "minddata/dataset/kernels/image/swap_red_blue_op.h"
 #include "minddata/dataset/kernels/image/uniform_aug_op.h"
 
@@ -240,6 +242,26 @@ std::shared_ptr<ResizeOperation> Resize(std::vector<int32_t> size, Interpolation
   return op;
 }
 
+// Function to create RgbaToBgrOperation.
+std::shared_ptr<RgbaToBgrOperation> RGBA2BGR() {
+  auto op = std::make_shared<RgbaToBgrOperation>();
+  // Input validation
+  if (!op->ValidateParams()) {
+    return nullptr;
+  }
+  return op;
+}
+
+// Function to create RgbaToRgbOperation.
+std::shared_ptr<RgbaToRgbOperation> RGBA2RGB() {
+  auto op = std::make_shared<RgbaToRgbOperation>();
+  // Input validation
+  if (!op->ValidateParams()) {
+    return nullptr;
+  }
+  return op;
+}
+
 // Function to create SwapRedBlueOperation.
 std::shared_ptr<SwapRedBlueOperation> SwapRedBlue() {
   auto op = std::make_shared<SwapRedBlueOperation>();
@@ -743,6 +765,26 @@ std::shared_ptr<TensorOp> ResizeOperation::Build() {
   return std::make_shared<ResizeOp>(height, width, interpolation_);
 }
 
+// RgbaToBgrOperation.
+RgbaToBgrOperation::RgbaToBgrOperation() {}
+
+bool RgbaToBgrOperation::ValidateParams() { return true; }
+
+std::shared_ptr<TensorOp> RgbaToBgrOperation::Build() {
+  std::shared_ptr<RgbaToBgrOp> tensor_op = std::make_shared<RgbaToBgrOp>();
+  return tensor_op;
+}
+
+// RgbaToRgbOperation.
+RgbaToRgbOperation::RgbaToRgbOperation() {}
+
+bool RgbaToRgbOperation::ValidateParams() { return true; }
+
+std::shared_ptr<TensorOp> RgbaToRgbOperation::Build() {
+  std::shared_ptr<RgbaToRgbOp> tensor_op = std::make_shared<RgbaToRgbOp>();
+  return tensor_op;
+}
+
 // SwapRedBlueOperation.
 SwapRedBlueOperation::SwapRedBlueOperation() {}
 

mindspore/ccsrc/minddata/dataset/include/transforms.h

@@ -65,14 +65,16 @@ class RandomSharpnessOperation;
 class RandomSolarizeOperation;
 class RandomVerticalFlipOperation;
 class ResizeOperation;
+class RgbaToBgrOperation;
+class RgbaToRgbOperation;
 class SwapRedBlueOperation;
 class UniformAugOperation;
 
 /// \brief Function to create a CenterCrop TensorOperation.
 /// \notes Crops the input image at the center to the given size.
 /// \param[in] size - a vector representing the output size of the cropped image.
-///               If size is a single value, a square crop of size (size, size) is returned.
+///      If size is a single value, a square crop of size (size, size) is returned.
-///               If size has 2 values, it should be (height, width).
+///      If size has 2 values, it should be (height, width).
 /// \return Shared pointer to the current TensorOperation.
 std::shared_ptr<CenterCropOperation> CenterCrop(std::vector<int32_t> size);
 
@@ -103,15 +105,15 @@ std::shared_ptr<HwcToChwOperation> HWC2CHW();
 
 /// \brief Function to create a MixUpBatch TensorOperation.
 /// \notes Apply MixUp transformation on an input batch of images and labels. The labels must be in one-hot format and
-///    Batch must be called before calling this function.
+///     Batch must be called before calling this function.
 /// \param[in] alpha hyperparameter of beta distribution (default = 1.0)
 /// \return Shared pointer to the current TensorOperation.
 std::shared_ptr<MixUpBatchOperation> MixUpBatch(float alpha = 1);
 
 /// \brief Function to create a Normalize TensorOperation.
 /// \notes Normalize the input image with respect to mean and standard deviation.
-/// \param[in] mean - a vector of mean values for each channel, w.r.t channel order.
+/// \param[in] mean A vector of mean values for each channel, w.r.t channel order.
-/// \param[in] std - a vector of standard deviations for each channel, w.r.t. channel order.
+/// \param[in] std A vector of standard deviations for each channel, w.r.t. channel order.
 /// \return Shared pointer to the current TensorOperation.
 std::shared_ptr<NormalizeOperation> Normalize(std::vector<float> mean, std::vector<float> std);
 
@@ -230,8 +232,18 @@ std::shared_ptr<RandomSolarizeOperation> RandomSolarize(uint8_t threshold_min =
 /// \return Shared pointer to the current TensorOperation.
 std::shared_ptr<RandomVerticalFlipOperation> RandomVerticalFlip(float prob = 0.5);
 
+/// \brief Function to create a RgbaToBgr TensorOperation.
+/// \notes Changes the input 4 channel RGBA tensor to 3 channel BGR.
+/// \return Shared pointer to the current TensorOperation.
+std::shared_ptr<RgbaToBgrOperation> RGBA2BGR();
+
+/// \brief Function to create a RgbaToRgb TensorOperation.
+/// \notes Changes the input 4 channel RGBA tensor to 3 channel RGB.
+/// \return Shared pointer to the current TensorOperation.
+std::shared_ptr<RgbaToRgbOperation> RGBA2RGB();
+
 /// \brief Function to create a Resize TensorOperation.
-/// \notes Resize the input image to the given size..
+/// \notes Resize the input image to the given size.
 /// \param[in] size - a vector representing the output size of the resized image.
 ///               If size is a single value, the image will be resized to this value with
 ///               the same image aspect ratio. If size has 2 values, it should be (height, width).
@@ -520,6 +532,28 @@ class ResizeOperation : public TensorOperation {
   InterpolationMode interpolation_;
 };
 
+class RgbaToBgrOperation : public TensorOperation {
+ public:
+  RgbaToBgrOperation();
+
+  ~RgbaToBgrOperation() = default;
+
+  std::shared_ptr<TensorOp> Build() override;
+
+  bool ValidateParams() override;
+};
+
+class RgbaToRgbOperation : public TensorOperation {
+ public:
+  RgbaToRgbOperation();
+
+  ~RgbaToRgbOperation() = default;
+
+  std::shared_ptr<TensorOp> Build() override;
+
+  bool ValidateParams() override;
+};
+
 class UniformAugOperation : public TensorOperation {
  public:
   explicit UniformAugOperation(std::vector<std::shared_ptr<TensorOperation>> transforms, int32_t num_ops = 2);

mindspore/ccsrc/minddata/dataset/kernels/image/CMakeLists.txt

@@ -36,6 +36,8 @@ add_library(kernels-image OBJECT
     rescale_op.cc
     resize_bilinear_op.cc
     resize_op.cc
+    rgba_to_bgr_op.cc
+    rgba_to_rgb_op.cc
     sharpness_op.cc
     solarize_op.cc
     swap_red_blue_op.cc

mindspore/ccsrc/minddata/dataset/kernels/image/image_utils.cc

@@ -856,6 +856,44 @@ Status Pad(const std::shared_ptr<Tensor> &input, std::shared_ptr<Tensor> *output
     RETURN_STATUS_UNEXPECTED("Unexpected error in pad");
   }
 }
+
+Status RgbaToRgb(const std::shared_ptr<Tensor> &input, std::shared_ptr<Tensor> *output) {
+  try {
+    std::shared_ptr<CVTensor> input_cv = CVTensor::AsCVTensor(std::move(input));
+    int num_channels = input_cv->shape()[2];
+    if (input_cv->shape().Size() != 3 || num_channels != 4) {
+      std::string err_msg = "Number of channels does not equal 4, got : " + std::to_string(num_channels);
+      RETURN_STATUS_UNEXPECTED(err_msg);
+    }
+    TensorShape out_shape = TensorShape({input_cv->shape()[0], input_cv->shape()[1], 3});
+    std::shared_ptr<CVTensor> output_cv;
+    RETURN_IF_NOT_OK(CVTensor::CreateEmpty(out_shape, input_cv->type(), &output_cv));
+    cv::cvtColor(input_cv->mat(), output_cv->mat(), static_cast<int>(cv::COLOR_RGBA2RGB));
+    *output = std::static_pointer_cast<Tensor>(output_cv);
+    return Status::OK();
+  } catch (const cv::Exception &e) {
+    RETURN_STATUS_UNEXPECTED("Unexpected error in RgbaToRgb.");
+  }
+}
+
+Status RgbaToBgr(const std::shared_ptr<Tensor> &input, std::shared_ptr<Tensor> *output) {
+  try {
+    std::shared_ptr<CVTensor> input_cv = CVTensor::AsCVTensor(std::move(input));
+    int num_channels = input_cv->shape()[2];
+    if (input_cv->shape().Size() != 3 || num_channels != 4) {
+      std::string err_msg = "Number of channels does not equal 4, got : " + std::to_string(num_channels);
+      RETURN_STATUS_UNEXPECTED(err_msg);
+    }
+    TensorShape out_shape = TensorShape({input_cv->shape()[0], input_cv->shape()[1], 3});
+    std::shared_ptr<CVTensor> output_cv;
+    RETURN_IF_NOT_OK(CVTensor::CreateEmpty(out_shape, input_cv->type(), &output_cv));
+    cv::cvtColor(input_cv->mat(), output_cv->mat(), static_cast<int>(cv::COLOR_RGBA2BGR));
+    *output = std::static_pointer_cast<Tensor>(output_cv);
+    return Status::OK();
+  } catch (const cv::Exception &e) {
+    RETURN_STATUS_UNEXPECTED("Unexpected error in RgbaToBgr.");
+  }
+}
 // -------- BBOX OPERATIONS -------- //
 Status UpdateBBoxesForCrop(std::shared_ptr<Tensor> *bboxList, size_t *bboxCount, int CB_Xmin, int CB_Ymin, int CB_Xmax,
                            int CB_Ymax) {

mindspore/ccsrc/minddata/dataset/kernels/image/rgba_to_bgr_op.cc

@@ -0,0 +1,29 @@
+/**
+ * Copyright 2020 Huawei Technologies Co., Ltd
+ *
+ * Licensed 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.
+ */
+#include "minddata/dataset/kernels/image/rgba_to_bgr_op.h"
+
+#include "minddata/dataset/kernels/image/image_utils.h"
+#include "minddata/dataset/util/status.h"
+
+namespace mindspore {
+namespace dataset {
+
+Status RgbaToBgrOp::Compute(const std::shared_ptr<Tensor> &input, std::shared_ptr<Tensor> *output) {
+  IO_CHECK(input, output);
+  return RgbaToBgr(input, output);
+}
+}  // namespace dataset
+}  // namespace mindspore

mindspore/ccsrc/minddata/dataset/kernels/image/rgba_to_bgr_op.h

@@ -0,0 +1,43 @@
+/**
+ * Copyright 2020 Huawei Technologies Co., Ltd
+ *
+ * Licensed 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.
+ */
+#ifndef MINDSPORE_CCSRC_MINDDATA_DATASET_KERNELS_RGBA_TO_BGR_OP_H_
+#define MINDSPORE_CCSRC_MINDDATA_DATASET_KERNELS_RGBA_TO_BGR_OP_H_
+
+#include <memory>
+#include <vector>
+#include <string>
+
+#include "minddata/dataset/core/tensor.h"
+#include "minddata/dataset/kernels/image/image_utils.h"
+#include "minddata/dataset/kernels/tensor_op.h"
+#include "minddata/dataset/util/status.h"
+
+namespace mindspore {
+namespace dataset {
+class RgbaToBgrOp : public TensorOp {
+ public:
+  RgbaToBgrOp() {}
+
+  ~RgbaToBgrOp() override = default;
+
+  Status Compute(const std::shared_ptr<Tensor> &input, std::shared_ptr<Tensor> *output) override;
+
+  std::string Name() const override { return kRgbaToBgrOp; }
+};
+}  // namespace dataset
+}  // namespace mindspore
+
+#endif  // MINDSPORE_CCSRC_MINDDATA_DATASET_KERNELS_RGBA_TO_BGR_OP_H_

mindspore/ccsrc/minddata/dataset/kernels/image/rgba_to_rgb_op.cc

@@ -0,0 +1,29 @@
+/**
+ * Copyright 2020 Huawei Technologies Co., Ltd
+ *
+ * Licensed 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.
+ */
+#include "minddata/dataset/kernels/image/rgba_to_rgb_op.h"
+
+#include "minddata/dataset/kernels/image/image_utils.h"
+#include "minddata/dataset/util/status.h"
+
+namespace mindspore {
+namespace dataset {
+
+Status RgbaToRgbOp::Compute(const std::shared_ptr<Tensor> &input, std::shared_ptr<Tensor> *output) {
+  IO_CHECK(input, output);
+  return RgbaToRgb(input, output);
+}
+}  // namespace dataset
+}  // namespace mindspore

mindspore/ccsrc/minddata/dataset/kernels/image/rgba_to_rgb_op.h

@@ -0,0 +1,43 @@
+/**
+ * Copyright 2020 Huawei Technologies Co., Ltd
+ *
+ * Licensed 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.
+ */
+#ifndef MINDSPORE_CCSRC_MINDDATA_DATASET_KERNELS_RGBA_TO_RGB_OP_H_
+#define MINDSPORE_CCSRC_MINDDATA_DATASET_KERNELS_RGBA_TO_RGB_OP_H_
+
+#include <memory>
+#include <vector>
+#include <string>
+
+#include "minddata/dataset/core/tensor.h"
+#include "minddata/dataset/kernels/image/image_utils.h"
+#include "minddata/dataset/kernels/tensor_op.h"
+#include "minddata/dataset/util/status.h"
+
+namespace mindspore {
+namespace dataset {
+class RgbaToRgbOp : public TensorOp {
+ public:
+  RgbaToRgbOp() {}
+
+  ~RgbaToRgbOp() override = default;
+
+  Status Compute(const std::shared_ptr<Tensor> &input, std::shared_ptr<Tensor> *output) override;
+
+  std::string Name() const override { return kRgbaToRgbOp; }
+};
+}  // namespace dataset
+}  // namespace mindspore
+
+#endif  // MINDSPORE_CCSRC_MINDDATA_DATASET_KERNELS_RGBA_TO_RGB_OP_H_

mindspore/ccsrc/minddata/dataset/kernels/image/swap_red_blue_op.h

@@ -29,14 +29,7 @@ namespace mindspore {
 namespace dataset {
 class SwapRedBlueOp : public TensorOp {
  public:
-  // SwapRedBlues the image to the output specified size. If only one value is provided,
+  /// \brief Constructor
-  // the it will crop the smaller size and maintains the aspect ratio.
-  // @param size1: the first size of output. If only this parameter is provided
-  // the smaller dimension will be cropd to this and then the other dimension changes
-  // such that the aspect ratio is maintained.
-  // @param size2: the second size of output. If this is also provided, the output size
-  // will be (size1, size2)
-  // @param InterpolationMode: the interpolation mode being used.
   SwapRedBlueOp() {}
 
   SwapRedBlueOp(const SwapRedBlueOp &rhs) = default;
@@ -45,7 +38,7 @@ class SwapRedBlueOp : public TensorOp {
 
   ~SwapRedBlueOp() override = default;
 
-  void Print(std::ostream &out) const override { out << "SwapRedBlueOp x"; }
+  void Print(std::ostream &out) const override { out << "SwapRedBlueOp"; }
 
   Status Compute(const std::shared_ptr<Tensor> &input, std::shared_ptr<Tensor> *output) override;
 

mindspore/ccsrc/minddata/dataset/kernels/tensor_op.h

@@ -121,8 +121,10 @@ constexpr char kRescaleOp[] = "RescaleOp";
 constexpr char kResizeBilinearOp[] = "ResizeBilinearOp";
 constexpr char kResizeOp[] = "ResizeOp";
 constexpr char kResizeWithBBoxOp[] = "ResizeWithBBoxOp";
-constexpr char kSolarizeOp[] = "SolarizeOp";
+constexpr char kRgbaToBgrOp[] = "RgbaToBgrOp";
+constexpr char kRgbaToRgbOp[] = "RgbaToRgbOp";
 constexpr char kSharpnessOp[] = "SharpnessOp";
+constexpr char kSolarizeOp[] = "SolarizeOp";
 constexpr char kSwapRedBlueOp[] = "SwapRedBlueOp";
 constexpr char kUniformAugOp[] = "UniformAugOp";
 constexpr char kSoftDvppDecodeRandomCropResizeJpegOp[] = "SoftDvppDecodeRandomCropResizeJpegOp";

tests/ut/cpp/dataset/CMakeLists.txt

@@ -55,12 +55,14 @@ SET(DE_UT_SRCS
         random_vertical_flip_with_bbox_op_test.cc
         rename_op_test.cc
         repeat_op_test.cc
-        skip_op_test.cc
         rescale_op_test.cc
         resize_bilinear_op_test.cc
         resize_op_test.cc
         resize_with_bbox_op_test.cc
+	rgba_to_bgr_op_test.cc
+	rgba_to_rgb_op_test.cc
         schema_test.cc
+        skip_op_test.cc
         shuffle_op_test.cc
         stand_alone_samplers_test.cc
         status_test.cc

tests/ut/cpp/dataset/rgba_to_bgr_op_test.cc

@@ -0,0 +1,62 @@
+/**
+ * Copyright 2020 Huawei Technologies Co., Ltd
+ *
+ * Licensed 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.
+ */
+
+#include <opencv2/imgcodecs.hpp>
+#include "common/common.h"
+#include "common/cvop_common.h"
+#include "minddata/dataset/kernels/image/rgba_to_bgr_op.h"
+#include "minddata/dataset/core/cv_tensor.h"
+#include "utils/log_adapter.h"
+
+using namespace mindspore::dataset;
+using mindspore::MsLogLevel::INFO;
+using mindspore::ExceptionType::NoExceptionType;
+using mindspore::LogStream;
+
+class MindDataTestRgbaToBgrOp : public UT::CVOP::CVOpCommon {
+ protected:
+  MindDataTestRgbaToBgrOp() : CVOpCommon() {}
+
+  std::shared_ptr<Tensor> output_tensor_;
+};
+
+TEST_F(MindDataTestRgbaToBgrOp, TestOp1) {
+  MS_LOG(INFO) << "Doing testRGBA2BGR.";
+  std::unique_ptr<RgbaToBgrOp> op(new RgbaToBgrOp());
+  EXPECT_TRUE(op->OneToOne());
+  // prepare 4 channel image
+  cv::Mat rgba_image;
+  // First create the image with alpha channel
+  cv::cvtColor(raw_cv_image_, rgba_image, cv::COLOR_BGR2RGBA);
+  std::vector<cv::Mat>channels(4);
+  cv::split(rgba_image, channels);
+  channels[3] = cv::Mat::zeros(rgba_image.rows, rgba_image.cols, CV_8UC1);
+  cv::merge(channels, rgba_image);
+  // create new tensor to test conversion
+  std::shared_ptr<Tensor> rgba_input;
+  std::shared_ptr<CVTensor> input_cv_tensor;
+  CVTensor::CreateFromMat(rgba_image, &input_cv_tensor);
+  rgba_input = std::dynamic_pointer_cast<Tensor>(input_cv_tensor);
+
+  Status s = op->Compute(rgba_input, &output_tensor_);
+  size_t actual = 0;
+  if (s == Status::OK()) {
+    actual = output_tensor_->shape()[0] * output_tensor_->shape()[1] * output_tensor_->shape()[2];
+  }
+  EXPECT_EQ(actual, input_tensor_->shape()[0] * input_tensor_->shape()[1] * 3);
+  EXPECT_EQ(s, Status::OK());
+}
+

tests/ut/cpp/dataset/rgba_to_rgb_op_test.cc

@@ -0,0 +1,62 @@
+/**
+ * Copyright 2020 Huawei Technologies Co., Ltd
+ *
+ * Licensed 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.
+ */
+
+#include <opencv2/imgcodecs.hpp>
+#include "common/common.h"
+#include "common/cvop_common.h"
+#include "minddata/dataset/kernels/image/rgba_to_rgb_op.h"
+#include "minddata/dataset/core/cv_tensor.h"
+#include "utils/log_adapter.h"
+
+using namespace mindspore::dataset;
+using mindspore::MsLogLevel::INFO;
+using mindspore::ExceptionType::NoExceptionType;
+using mindspore::LogStream;
+
+class MindDataTestRgbaToRgbOp : public UT::CVOP::CVOpCommon {
+ protected:
+  MindDataTestRgbaToRgbOp() : CVOpCommon() {}
+
+  std::shared_ptr<Tensor> output_tensor_;
+};
+
+TEST_F(MindDataTestRgbaToRgbOp, TestOp1) {
+  MS_LOG(INFO) << "Doing testRGBA2RGB.";
+  std::unique_ptr<RgbaToRgbOp> op(new RgbaToRgbOp());
+  EXPECT_TRUE(op->OneToOne());
+  // prepare 4 channel image
+  cv::Mat rgba_image;
+  // First create the image with alpha channel
+  cv::cvtColor(raw_cv_image_, rgba_image, cv::COLOR_BGR2RGBA);
+  std::vector<cv::Mat>channels(4);
+  cv::split(rgba_image, channels);
+  channels[3] = cv::Mat::zeros(rgba_image.rows, rgba_image.cols, CV_8UC1);
+  cv::merge(channels, rgba_image);
+  // create new tensor to test conversion
+  std::shared_ptr<Tensor> rgba_input;
+  std::shared_ptr<CVTensor> input_cv_tensor;
+  CVTensor::CreateFromMat(rgba_image, &input_cv_tensor);
+  rgba_input = std::dynamic_pointer_cast<Tensor>(input_cv_tensor);
+
+  Status s = op->Compute(rgba_input, &output_tensor_);
+  size_t actual = 0;
+  if (s == Status::OK()) {
+    actual = output_tensor_->shape()[0] * output_tensor_->shape()[1] * output_tensor_->shape()[2];
+  }
+  EXPECT_EQ(actual, input_tensor_->shape()[0] * input_tensor_->shape()[1] * 3);
+  EXPECT_EQ(s, Status::OK());
+}
+