Merge branch 'face-rfcn' into 'master'

Support Face rfcn

See merge request !329

mace/core/operator.cc

@@ -85,6 +85,7 @@ extern void Register_MatMul(OperatorRegistry *op_registry);
 extern void Register_Pooling(OperatorRegistry *op_registry);
 extern void Register_Proposal(OperatorRegistry *op_registry);
 extern void Register_PSROIAlign(OperatorRegistry *op_registry);
+extern void Register_ReOrganize(OperatorRegistry *op_registry);
 extern void Register_Reshape(OperatorRegistry *op_registry);
 extern void Register_ResizeBilinear(OperatorRegistry *op_registry);
 extern void Register_Slice(OperatorRegistry *op_registry);
@@ -120,6 +121,7 @@ OperatorRegistry::OperatorRegistry() {
   ops::Register_Pooling(this);
   ops::Register_Proposal(this);
   ops::Register_PSROIAlign(this);
+  ops::Register_ReOrganize(this);
   ops::Register_Reshape(this);
   ops::Register_ResizeBilinear(this);
   ops::Register_Slice(this);

mace/kernels/reorganize.h

+//
+// Copyright (c) 2017 XiaoMi All rights reserved.
+//
+#ifndef MACE_KERNELS_REORGANIZE_H_
+#define MACE_KERNELS_REORGANIZE_H_
+
+#include <vector>
+
+#include "mace/core/future.h"
+#include "mace/core/runtime/opencl/cl2_header.h"
+#include "mace/core/tensor.h"
+
+namespace mace {
+namespace kernels {
+
+template <DeviceType D, typename T>
+struct ReOrganizeFunctor {
+  void operator()(const Tensor *input,
+                  const std::vector<index_t> &out_shape,
+                  Tensor *output,
+                  StatsFuture *future) {
+    const bool w2c = out_shape[3] > input->dim(3);
+
+    const index_t height = input->dim(1);
+    const index_t input_width = input->dim(2);
+    const index_t input_chan = input->dim(3);
+    const index_t output_width = output->dim(2);
+    const index_t output_chan = output->dim(3);
+
+    const T *input_ptr = input->data<T>();
+    T *output_ptr = output->mutable_data<T>();
+
+    if (w2c) {
+      MACE_CHECK((out_shape[3] % input->dim(3)) == 0);
+      const index_t multiplier = out_shape[3] / input->dim(3);
+#pragma omp parallel for collapse(4)
+      for (index_t n = 0; n < out_shape[0]; ++n) {
+        for (index_t h = 0; h < out_shape[1]; ++h) {
+          for (index_t w = 0; w < out_shape[2]; ++w) {
+            for (index_t c = 0; c < out_shape[3]; ++c) {
+              const index_t out_offset =
+                  ((n * height + h) * output_width + w)
+                      * output_chan + c;
+              const index_t in_w_idx = w + (c % multiplier) * output_width;
+              const index_t in_chan_idx = c / multiplier;
+              const index_t in_offset =
+                  ((n * height + h) * input_width + in_w_idx)
+                      * input_chan + in_chan_idx;
+              output_ptr[out_offset] = input_ptr[in_offset];
+            }
+          }
+        }
+      }
+    } else {
+      MACE_CHECK((input->dim(3) % out_shape[3]) == 0);
+      const index_t multiplier = input->dim(3) / out_shape[3];
+
+#pragma omp parallel for collapse(4)
+      for (index_t n = 0; n < out_shape[0]; ++n) {
+        for (index_t h = 0; h < out_shape[1]; ++h) {
+          for (index_t w = 0; w < out_shape[2]; ++w) {
+            for (index_t c = 0; c < out_shape[3]; ++c) {
+              const index_t out_offset =
+                  ((n * height + h) * output_width + w)
+                      * output_chan + c;
+              const index_t in_w_idx = w % input_width;
+              const index_t in_chan_idx = w / input_width + c * multiplier;
+              const index_t in_offset =
+                  ((n * height + h) * input_width + in_w_idx)
+                      * input_chan + in_chan_idx;
+              output_ptr[out_offset] = input_ptr[in_offset];
+            }
+          }
+        }
+      }
+    }
+
+  }
+};
+
+}  // namespace kernels
+}  // namespace mace
+
+#endif  // MACE_KERNELS_REORGANIZE_H_

mace/ops/proposal.h

@@ -16,12 +16,12 @@ class ProposalOp : public Operator<D, T> {
  public:
   ProposalOp(const OperatorDef &operator_def, Workspace *ws)
       : Operator<D, T>(operator_def, ws),
-        functor_(OperatorBase::GetSingleArgument<int>("min_size", 0),
-                 OperatorBase::GetSingleArgument<float>("nms_thresh", 0),
-                 OperatorBase::GetSingleArgument<int>("pre_nms_top_n", 0),
-                 OperatorBase::GetSingleArgument<int>("post_nms_top_n", 0),
+        functor_(OperatorBase::GetSingleArgument<int>("min_size", 16),
+                 OperatorBase::GetSingleArgument<float>("nms_thresh", 0.7),
+                 OperatorBase::GetSingleArgument<int>("pre_nms_top_n", 6000),
+                 OperatorBase::GetSingleArgument<int>("post_nms_top_n", 300),
                  OperatorBase::GetSingleArgument<int>("feat_stride", 0),
-                 OperatorBase::GetSingleArgument<int>("base_size", 16),
+                 OperatorBase::GetSingleArgument<int>("base_size", 12),
                  OperatorBase::GetRepeatedArgument<int>("scales"),
                  OperatorBase::GetRepeatedArgument<float>("ratios")) {}
 

mace/ops/reorganize.cc

+//
+// Copyright (c) 2017 XiaoMi All rights reserved.
+//
+
+#include "mace/ops/reorganize.h"
+
+namespace mace {
+namespace ops {
+
+void Register_ReOrganize(OperatorRegistry *op_registry) {
+  REGISTER_OPERATOR(op_registry, OpKeyBuilder("ReOrganize")
+                                     .Device(DeviceType::CPU)
+                                     .TypeConstraint<float>("T")
+                                     .Build(),
+                    ReOrganizeOp<DeviceType::CPU, float>);
+}
+
+}  // namespace ops
+}  // namespace mace

mace/ops/reorganize.h

+//
+// Copyright (c) 2017 XiaoMi All rights reserved.
+//
+
+#ifndef MACE_OPS_REORGANIZE_H_
+#define MACE_OPS_REORGANIZE_H_
+
+#include <vector>
+
+#include "mace/core/operator.h"
+#include "mace/kernels/reorganize.h"
+
+namespace mace {
+namespace ops {
+
+template <DeviceType D, typename T>
+class ReOrganizeOp : public Operator<D, T> {
+ public:
+  ReOrganizeOp(const OperatorDef &op_def, Workspace *ws)
+      : Operator<D, T>(op_def, ws),
+        shape_(OperatorBase::GetRepeatedArgument<int64_t>("shape")) {}
+
+  bool Run(StatsFuture *future) override {
+    const Tensor *input = this->Input(INPUT);
+    const index_t num_dims = shape_.size();
+    int unknown_idx = -1;
+    index_t product = 1;
+    std::vector<index_t> out_shape;
+
+    for (int i = 0; i < num_dims; ++i) {
+      if (shape_[i] == -1) {
+        MACE_CHECK(unknown_idx == -1) << "Only one input size may be -1";
+        unknown_idx = i;
+        out_shape.push_back(1);
+      } else {
+        MACE_CHECK(shape_[i] >= 0) << "Shape must be non-negative: "
+                                   << shape_[i];
+        out_shape.push_back(shape_[i]);
+        product *= shape_[i];
+      }
+    }
+
+    if (unknown_idx != -1) {
+      MACE_CHECK(product != 0)
+          << "Cannot infer shape if there is zero shape size.";
+      const index_t missing = input->size() / product;
+      MACE_CHECK(missing * product == input->size())
+          << "Input size not match reshaped tensor size";
+      out_shape[unknown_idx] = missing;
+    }
+
+    Tensor *output = this->Output(OUTPUT);
+    output->Resize(out_shape);
+
+    functor_(input, out_shape, output, future);
+    return true;
+  }
+
+ private:
+  std::vector<int64_t> shape_;
+  kernels::ReOrganizeFunctor<D, T> functor_;
+
+ protected:
+  OP_INPUT_TAGS(INPUT);
+  OP_OUTPUT_TAGS(OUTPUT);
+};
+
+}  // namespace ops
+}  // namespace mace
+
+#endif  // MACE_OPS_REORGANIZE_H_

mace/ops/reorganize_test.cc

+//
+// Copyright (c) 2017 XiaoMi All rights reserved.
+//
+
+#include "gmock/gmock.h"
+#include "mace/core/operator.h"
+#include "mace/ops/ops_test_util.h"
+
+namespace mace {
+namespace ops {
+namespace test {
+
+class ReOrganizeTest : public OpsTestBase {};
+
+void TestReOrganize(const std::vector<index_t> &input_shape,
+                    const std::vector<float> &input_data,
+                    const std::vector<index_t> &output_shape,
+                    const std::vector<float> &output_data) {
+  const std::vector<int> out_shape(output_shape.begin(), output_shape.end());
+
+  // Construct graph
+  OpsTestNet net;
+
+  OpDefBuilder("ReOrganize", "ReOrganizeTest")
+      .Input("Input")
+      .Output("Output")
+      .AddIntsArg("shape", out_shape)
+      .Finalize(net.NewOperatorDef());
+
+  // Add input data
+  net.AddInputFromArray<DeviceType::CPU, float>("Input",
+                                                input_shape, input_data);
+
+  // Run
+  net.RunOp();
+
+  auto output = net.GetTensor("Output");
+
+  EXPECT_THAT(output->shape(), ::testing::ContainerEq(output_shape));
+
+  const float *output_ptr = output->data<float>();
+  int size = output->size();
+  for (int i = 0; i < size; ++i) {
+    ASSERT_EQ(output_data[i], output_ptr[i]) << "With Index " << i;
+  }
+
+  // Reverse reorganzie
+  const std::vector<int> in_shape(input_shape.begin(), input_shape.end());
+  OpDefBuilder("ReOrganize", "ReOrganizeTest")
+      .Input("Input")
+      .Output("Output")
+      .AddIntsArg("shape", in_shape)
+      .Finalize(net.NewOperatorDef());
+
+  // Add input data
+  net.AddInputFromArray<DeviceType::CPU, float>("Input",
+                                                output_shape, output_data);
+
+  // Run
+  net.RunOp();
+
+  output = net.GetTensor("Output");
+
+  EXPECT_THAT(output->shape(), ::testing::ContainerEq(input_shape));
+
+  output_ptr = output->data<float>();
+  size = output->size();
+  for (int i = 0; i < size; ++i) {
+    ASSERT_EQ(input_data[i], output_ptr[i]) << "With Index " << i;
+  }
+}
+
+TEST_F(ReOrganizeTest, Simple) {
+  TestReOrganize({1, 1, 4, 6},
+                 {0, 4, 8, 12, 16, 20,
+                  1, 5, 9, 13, 17, 21,
+                  2, 6, 10, 14, 18, 22,
+                  3, 7, 11, 15, 19, 23},
+                 {1, 1, 8, 3},
+                 {0, 8, 16, 1, 9, 17, 2, 10, 18, 3, 11, 19,
+                  4, 12, 20, 5, 13, 21, 6, 14, 22, 7, 15, 23});
+  TestReOrganize({1, 1, 5, 6},
+                 {0, 5, 10, 15, 20, 25,
+                  1, 6, 11, 16, 21, 26,
+                  2, 7, 12, 17, 22, 27,
+                  3, 8, 13, 18, 23, 28,
+                  4, 9, 14, 19, 24, 29},
+                 {1, 1, 10, 3},
+                 {0, 10, 20, 1, 11, 21, 2, 12, 22, 3, 13, 23,
+                  4, 14, 24, 5, 15, 25, 6, 16, 26, 7, 17, 27,
+                  8, 18, 28, 9, 19, 29});
+}
+
+TEST_F(ReOrganizeTest, Complex) {
+  TestReOrganize({1, 2, 2, 6},
+                 {0, 4, 8, 12, 16, 20,
+                  1, 5, 9, 13, 17, 21,
+                  2, 6, 10, 14, 18, 22,
+                  3, 7, 11, 15, 19, 23},
+                 {1, 2, 6, 2},
+                 {0, 12, 1, 13, 4, 16, 5, 17, 8, 20, 9, 21,
+                  2, 14, 3, 15, 6, 18, 7, 19, 10, 22, 11, 23});
+}
+
+}  // namespace test
+}  // namespace ops
+}  // namespace mace

mace/proto/caffe.proto

@@ -404,7 +404,9 @@ message LayerParameter {
   optional ParameterParameter parameter_param = 145;
   optional PoolingParameter pooling_param = 121;
   optional PowerParameter power_param = 122;
+  optional ProposalParameter proposal_param = 8266713;
   optional PReLUParameter prelu_param = 131;
+  optional PSROIAlignParameter psroi_align_param = 1490;
   optional PythonParameter python_param = 130;
   optional RecurrentParameter recurrent_param = 146;
   optional ReductionParameter reduction_param = 136;
@@ -944,6 +946,19 @@ message PowerParameter {
   optional float shift = 3 [default = 0.0];
 }
 
+// Message that stores parameters used by ProposalLayer
+message ProposalParameter {
+  optional uint32 feat_stride = 1 [default = 16];
+  repeated uint32 scales = 2;
+  repeated float ratios = 3;
+}
+
+message PSROIAlignParameter {
+  required float spatial_scale = 1;
+  required int32 output_dim = 2; // output channel number
+  required int32 group_size = 3; // number of groups to encode position-sensitive score maps
+}
+
 message PythonParameter {
   optional string module = 1;
   optional string layer = 2;

mace/python/tools/caffe_converter_lib.py

@@ -784,21 +784,89 @@ class CaffeConverter(object):
     self.net_def.op.extend([op_def])
     self.resolved_ops.add(op.name)
 
+  def convert_reshape(self, op):
+    op_def = self.CommonConvert(op, 'ReOrganize')
+    input_shape = op.parents[0].output_shape_map[op.layer.bottom[0]]
+    output_shape = input_shape
+    shape_param = np.asarray(op.layer.reshape_param.shape.dim)[[0, 3, 2, 1]]
+    print shape_param
+    for i in range(len(shape_param)):
+      if shape_param[i] != 0:
+        output_shape[i] = shape_param[i]
+    shape_arg = op_def.arg.add()
+    shape_arg.name = 'shape'
+    shape_arg.ints.extend(output_shape)
+    op.output_shape_map[op.layer.top[0]] = output_shape
+    self.add_output_shape(op_def, output_shape)
+    op_def.output.extend([op.name + ':0'])
+    self.net_def.op.extend([op_def])
+    self.resolved_ops.add(op.name)
+
+  def convert_proposal_op(self, op):
+    assert self.device == 'cpu'
+    op_def = self.CommonConvert(op, op.type)
+    if op.layer.HasField('proposal_param'):
+      proposal_param = op.layer.proposal_param
+      feat_stride_arg = op_def.arg.add()
+      feat_stride_arg.name = 'feat_stride'
+      feat_stride_arg.i = proposal_param.feat_stride
+      scales_arg = op_def.arg.add()
+      scales_arg.name = 'scales'
+      scales_arg.ints.extend(list(proposal_param.scales))
+      ratios_arg = op_def.arg.add()
+      ratios_arg.name = 'ratios'
+      ratios_arg.floats.extend(list(proposal_param.ratios))
+    output_shape = op.parents[0].output_shape_map[op.layer.bottom[0]]
+    op.output_shape_map[op.layer.top[0]] = output_shape
+    self.add_output_shape(op_def, output_shape)
+    op_def.output.extend([op.name + ':0'])
+    self.net_def.op.extend([op_def])
+    self.resolved_ops.add(op.name)
+
+  def convert_psroi_align(self, op):
+    assert self.device == 'cpu'
+    op_def = self.CommonConvert(op, op.type)
+    if op.layer.HasField('psroi_align_param'):
+      psroi_align_param = op.layer.psroi_align_param
+      spatial_scale_arg = op_def.arg.add()
+      spatial_scale_arg.name = 'spatial_scale'
+      spatial_scale_arg.f = psroi_align_param.spatial_scale
+      output_dim_arg = op_def.arg.add()
+      output_dim_arg.name = 'output_dim'
+      output_dim_arg.i = psroi_align_param.output_dim
+      group_size_arg = op_def.arg.add()
+      group_size_arg.name = 'group_size'
+      group_size_arg.i = psroi_align_param.group_size
+    output_shape = op.parents[0].output_shape_map[op.layer.bottom[0]]
+    op.output_shape_map[op.layer.top[0]] = output_shape
+    self.add_output_shape(op_def, output_shape)
+    op_def.output.extend([op.name + ':0'])
+    self.net_def.op.extend([op_def])
+    self.resolved_ops.add(op.name)
+
   def replace_in_out_name(self, input_names, output_names, is_single):
     in_names = set([input_name + ":0" for input_name in input_names])
     out_names = set([output_name + ":0" for output_name in output_names])
     if is_single:
       for op in self.net_def.op:
-        if len(op.input) > 0 and op.input[0] in in_names:
-          op.input[0] = MACE_INPUT_NODE_NAME + ':0'
-        if len(op.output) > 0 and op.output[0] in out_names:
-          op.output[0] = MACE_OUTPUT_NODE_NAME + ':0'
+        for i in range(len(op.input)):
+          if op.input[i] in in_names:
+            op.input[i] = MACE_INPUT_NODE_NAME + ':0'
+        for i in range(len(op.output)):
+          if op.output[i] in out_names:
+            op.output[i] = MACE_OUTPUT_NODE_NAME + ':0'
     else:
       for op in self.net_def.op:
-        if len(op.input) > 0 and op.input[0] in in_names:
-          op.input[0] = MACE_INPUT_NODE_NAME + '_' + op.input[0]
-        if len(op.output) > 0 and op.output[0] in out_names:
-          op.output[0] = MACE_OUTPUT_NODE_NAME + '_' + op.output[0]
+        for i in range(len(op.input)):
+          if op.input[i] in in_names:
+            op.input[i] = MACE_INPUT_NODE_NAME + '_' + op.input[i]
+          if op.input[i] in out_names:
+            op.input[i] = MACE_OUTPUT_NODE_NAME + '_' + op.input[i]
+        for i in range(len(op.output)):
+          if op.output[i] in in_names:
+            op.output[i] = MACE_INPUT_NODE_NAME + '_' + op.output[i]
+          if op.output[i] in out_names:
+            op.output[i] = MACE_OUTPUT_NODE_NAME + '_' + op.output[i]
 
   def add_input_op_shape(self, input_nodes, input_shapes):
     assert len(input_nodes) == len(input_shapes)
@@ -843,10 +911,16 @@ class CaffeConverter(object):
         self.convert_concat(op)
       elif op.type == 'Eltwise':
         self.convert_eltwise(op)
-      elif op.type in ['Softmax']:
-       self.convert_normal_op(op)
       elif op.type == 'Slice':
         self.convert_slice(op)
+      elif op.type == 'Reshape':
+        self.convert_reshape(op)
+      elif op.type == 'Proposal':
+        self.convert_proposal_op(op)
+      elif op.type == 'PSROIAlign':
+        self.convert_psroi_align(op)
+      elif op.type in ['Softmax']:
+        self.convert_normal_op(op)
       else:
         raise Exception('Unknown Op: %s, type: %s' % (op.name, op.type))
 

tools/env.sh

@@ -2,8 +2,6 @@
 LIBMACE_TAG=`git describe --abbrev=0 --tags`
 
 MACE_SOURCE_DIR=`/bin/pwd`
-INPUT_FILE_NAME="model_input"
-OUTPUT_FILE_NAME="model_out"
 PHONE_DATA_DIR="/data/local/tmp/mace_run"
 KERNEL_DIR="${PHONE_DATA_DIR}/cl/"
 CODEGEN_DIR=${MACE_SOURCE_DIR}/mace/codegen

tools/mace_tools.py

@@ -14,6 +14,7 @@ import subprocess
 import sys
 import urllib
 import yaml
+import re
 
 import adb_tools
 
@@ -64,13 +65,37 @@ def clear_env(target_soc):
   command = "bash tools/clear_env.sh {}".format(target_soc)
   run_command(command)
 
+def input_file_name(input_name):
+  return os.environ['INPUT_FILE_NAME'] + '_' + \
+         re.sub('[^0-9a-zA-Z]+', '_', input_name)
 
-def generate_random_input(target_soc, model_output_dir):
+def generate_random_input(target_soc, model_output_dir,
+                          input_names, input_files):
   generate_data_or_not = True
   command = "bash tools/validate_tools.sh {} {} {}".format(
       target_soc, model_output_dir, int(generate_data_or_not))
   run_command(command)
 
+  input_name_list = []
+  input_file_list = []
+  if isinstance(input_names, list):
+    input_name_list.extend(input_names)
+  else:
+    input_name_list.append(input_names)
+  if isinstance(input_files, list):
+    input_file_list.extend(input_files)
+  else:
+    input_file_list.append(input_files)
+  assert len(input_file_list) == len(input_name_list)
+  for i in range(len(input_file_list)):
+    if input_file_list[i] is not None:
+      dst_input_file = model_output_dir + '/' + input_file_name(input_name_list[i])
+      if input_file_list[i].startswith("http://") or \
+          input_file_list[i].startswith("https://"):
+        urllib.urlretrieve(input_file_list[i], dst_input_file)
+      else:
+        print 'Copy input data:', dst_input_file
+        shutil.copy(input_file_list[i], dst_input_file)
 
 def generate_model_code():
   command = "bash tools/generate_model_code.sh"
@@ -215,6 +240,13 @@ def parse_args():
       help="SoCs to build, comma seperated list (getprop ro.board.platform)")
   return parser.parse_known_args()
 
+def set_environment(configs):
+  os.environ["EMBED_MODEL_DATA"] = str(configs["embed_model_data"])
+  os.environ["VLOG_LEVEL"] = str(configs["vlog_level"])
+  os.environ["PROJECT_NAME"] = os.path.splitext(os.path.basename(
+    FLAGS.config))[0]
+  os.environ['INPUT_FILE_NAME'] = "model_input"
+  os.environ['OUTPUT_FILE_NAME'] = "model_out"
 
 def main(unused_args):
   configs = parse_model_configs()
@@ -223,10 +255,7 @@ def main(unused_args):
     FLAGS.round = 1
     FLAGS.restart_round = 1
 
-  os.environ["EMBED_MODEL_DATA"] = str(configs["embed_model_data"])
-  os.environ["VLOG_LEVEL"] = str(configs["vlog_level"])
-  os.environ["PROJECT_NAME"] = os.path.splitext(os.path.basename(
-      FLAGS.config))[0]
+  set_environment(configs)
 
   if FLAGS.mode == "build" or FLAGS.mode == "all":
     # Remove previous output dirs
@@ -266,6 +295,7 @@ def main(unused_args):
         skip_validation = configs["models"][model_name].get(
             "skip_validation", 0)
         model_config = configs["models"][model_name]
+        input_file_list = model_config.get("input_files", [])
         for key in model_config:
           if key in ['input_nodes', 'output_nodes'] and isinstance(
               model_config[key], list):
@@ -310,7 +340,8 @@ def main(unused_args):
 
         if FLAGS.mode == "build" or FLAGS.mode == "run" or FLAGS.mode == "validate"\
             or FLAGS.mode == "benchmark" or FLAGS.mode == "all":
-          generate_random_input(target_soc, model_output_dir)
+          generate_random_input(target_soc, model_output_dir,
+            model_config['input_nodes'], input_file_list)
 
         if FLAGS.mode == "build" or FLAGS.mode == "all":
           generate_model_code()
@@ -336,7 +367,7 @@ def main(unused_args):
       if FLAGS.mode == "throughput_test":
         merged_lib_file = FLAGS.output_dir + "/%s/%s/libmace_%s.%s.a" % \
             (os.environ["PROJECT_NAME"], target_abi, os.environ["PROJECT_NAME"], target_soc)
-        generate_random_input(target_soc, FLAGS.output_dir)
+        generate_random_input(target_soc, FLAGS.output_dir, [], [])
         for model_name in configs["models"]:
           runtime = configs["models"][model_name]["runtime"]
           os.environ["%s_MODEL_TAG" % runtime.upper()] = model_name

tools/validate.py

@@ -97,14 +97,17 @@ def validate_caffe_model(input_names, input_shapes, output_names, output_shapes)
     input_value = load_data(FLAGS.input_file + "_" + input_names[i])
     input_value = input_value.reshape(input_shapes[i]).transpose((0, 3, 1, 2))
     input_blob_name = input_names[i]
-    if input_names[i] in net.top_names:
-      input_blob_name = net.top_names[input_names[i]][0]
+    try:
+      if input_names[i] in net.top_names:
+        input_blob_name = net.top_names[input_names[i]][0]
+    except ValueError:
+      pass
     net.blobs[input_blob_name].data[0] = input_value
 
   net.forward()
 
   for i in range(len(output_names)):
-    value = net.blobs[net.top_names[output_names[i]][0]].data[0]
+    value = net.blobs[net.top_names[output_names[i]][0]].data
     out_shape = output_shapes[i]
     out_shape[1], out_shape[2], out_shape[3] = out_shape[3], out_shape[1], out_shape[2]
     value = value.reshape(out_shape).transpose((0, 2, 3, 1))