I have trained InceptionV3 model in tensor flow on my own dataset. I have the checkpoint file and the graph (.meta) from training. I am using these files to classify the label of a new image. Till now I have the following:
inception_v3 code from TFslim
def inception_v3(inputs, dropout_keep_prob=0.8, num_classes=1000, is_training=True, restore_logits=True, scope=''): """Latest Inception from http://arxiv.org/abs/1512.00567. "Rethinking the Inception Architecture for Computer Vision" Christian Szegedy, Vincent Vanhoucke, Sergey Ioffe, Jonathon Shlens, Zbigniew Wojna Args: inputs: a tensor of size [batch_size, height, width, channels]. dropout_keep_prob: dropout keep_prob. num_classes: number of predicted classes. is_training: whether is training or not. restore_logits: whether or not the logits layers should be restored. Useful for fine-tuning a model with different num_classes. scope: Optional scope for name_scope. Returns: a list containing 'logits', 'aux_logits' Tensors. """ # end_points will collect relevant activations for external use, for example # summaries or losses. end_points = {} with tf.name_scope(scope, 'inception_v3', [inputs]): with scopes.arg_scope([ops.conv2d, ops.fc, ops.batch_norm, ops.dropout], is_training=is_training): with scopes.arg_scope([ops.conv2d, ops.max_pool, ops.avg_pool], stride=1, padding='VALID'): # 299 x 299 x 3 end_points['conv0'] = ops.conv2d(inputs, 32, [3, 3], stride=2, scope='conv0') # 149 x 149 x 32 end_points['conv1'] = ops.conv2d(end_points['conv0'], 32, [3, 3], scope='conv1') # 147 x 147 x 32 end_points['conv2'] = ops.conv2d(end_points['conv1'], 64, [3, 3], padding='SAME', scope='conv2') # 147 x 147 x 64 end_points['pool1'] = ops.max_pool(end_points['conv2'], [3, 3], stride=2, scope='pool1') # 73 x 73 x 64 end_points['conv3'] = ops.conv2d(end_points['pool1'], 80, [1, 1], scope='conv3') # 73 x 73 x 80. end_points['conv4'] = ops.conv2d(end_points['conv3'], 192, [3, 3], scope='conv4') # 71 x 71 x 192. end_points['pool2'] = ops.max_pool(end_points['conv4'], [3, 3], stride=2, scope='pool2') # 35 x 35 x 192. net = end_points['pool2'] # Inception blocks with scopes.arg_scope([ops.conv2d, ops.max_pool, ops.avg_pool], stride=1, padding='SAME'): # mixed: 35 x 35 x 256. with tf.variable_scope('mixed_35x35x256a'): with tf.variable_scope('branch1x1'): branch1x1 = ops.conv2d(net, 64, [1, 1]) with tf.variable_scope('branch5x5'): branch5x5 = ops.conv2d(net, 48, [1, 1]) branch5x5 = ops.conv2d(branch5x5, 64, [5, 5]) with tf.variable_scope('branch3x3dbl'): branch3x3dbl = ops.conv2d(net, 64, [1, 1]) branch3x3dbl = ops.conv2d(branch3x3dbl, 96, [3, 3]) branch3x3dbl = ops.conv2d(branch3x3dbl, 96, [3, 3]) with tf.variable_scope('branch_pool'): branch_pool = ops.avg_pool(net, [3, 3]) branch_pool = ops.conv2d(branch_pool, 32, [1, 1]) net = tf.concat([branch1x1, branch5x5, branch3x3dbl, branch_pool], 3) end_points['mixed_35x35x256a'] = net # mixed_1: 35 x 35 x 288. with tf.variable_scope('mixed_35x35x288a'): with tf.variable_scope('branch1x1'): branch1x1 = ops.conv2d(net, 64, [1, 1]) with tf.variable_scope('branch5x5'): branch5x5 = ops.conv2d(net, 48, [1, 1]) branch5x5 = ops.conv2d(branch5x5, 64, [5, 5]) with tf.variable_scope('branch3x3dbl'): branch3x3dbl = ops.conv2d(net, 64, [1, 1]) branch3x3dbl = ops.conv2d(branch3x3dbl, 96, [3, 3]) branch3x3dbl = ops.conv2d(branch3x3dbl, 96, [3, 3]) with tf.variable_scope('branch_pool'): branch_pool = ops.avg_pool(net, [3, 3]) branch_pool = ops.conv2d(branch_pool, 64, [1, 1]) net = tf.concat([branch1x1, branch5x5, branch3x3dbl, branch_pool], 3) end_points['mixed_35x35x288a'] = net # mixed_2: 35 x 35 x 288. with tf.variable_scope('mixed_35x35x288b'): with tf.variable_scope('branch1x1'): branch1x1 = ops.conv2d(net, 64, [1, 1]) with tf.variable_scope('branch5x5'): branch5x5 = ops.conv2d(net, 48, [1, 1]) branch5x5 = ops.conv2d(branch5x5, 64, [5, 5]) with tf.variable_scope('branch3x3dbl'): branch3x3dbl = ops.conv2d(net, 64, [1, 1]) branch3x3dbl = ops.conv2d(branch3x3dbl, 96, [3, 3]) branch3x3dbl = ops.conv2d(branch3x3dbl, 96, [3, 3]) with tf.variable_scope('branch_pool'): branch_pool = ops.avg_pool(net, [3, 3]) branch_pool = ops.conv2d(branch_pool, 64, [1, 1]) net = tf.concat([branch1x1, branch5x5, branch3x3dbl, branch_pool], 3) end_points['mixed_35x35x288b'] = net # mixed_3: 17 x 17 x 768. with tf.variable_scope('mixed_17x17x768a'): with tf.variable_scope('branch3x3'): branch3x3 = ops.conv2d(net, 384, [3, 3], stride=2, padding='VALID') with tf.variable_scope('branch3x3dbl'): branch3x3dbl = ops.conv2d(net, 64, [1, 1]) branch3x3dbl = ops.conv2d(branch3x3dbl, 96, [3, 3]) branch3x3dbl = ops.conv2d(branch3x3dbl, 96, [3, 3], stride=2, padding='VALID') with tf.variable_scope('branch_pool'): branch_pool = ops.max_pool(net, [3, 3], stride=2, padding='VALID') net = tf.concat([branch3x3, branch3x3dbl, branch_pool], 3) end_points['mixed_17x17x768a'] = net # mixed4: 17 x 17 x 768. with tf.variable_scope('mixed_17x17x768b'): with tf.variable_scope('branch1x1'): branch1x1 = ops.conv2d(net, 192, [1, 1]) with tf.variable_scope('branch7x7'): branch7x7 = ops.conv2d(net, 128, [1, 1]) branch7x7 = ops.conv2d(branch7x7, 128, [1, 7]) branch7x7 = ops.conv2d(branch7x7, 192, [7, 1]) with tf.variable_scope('branch7x7dbl'): branch7x7dbl = ops.conv2d(net, 128, [1, 1]) branch7x7dbl = ops.conv2d(branch7x7dbl, 128, [7, 1]) branch7x7dbl = ops.conv2d(branch7x7dbl, 128, [1, 7]) branch7x7dbl = ops.conv2d(branch7x7dbl, 128, [7, 1]) branch7x7dbl = ops.conv2d(branch7x7dbl, 192, [1, 7]) with tf.variable_scope('branch_pool'): branch_pool = ops.avg_pool(net, [3, 3]) branch_pool = ops.conv2d(branch_pool, 192, [1, 1]) net = tf.concat([branch1x1, branch7x7, branch7x7dbl, branch_pool], 3) end_points['mixed_17x17x768b'] = net # mixed_5: 17 x 17 x 768. with tf.variable_scope('mixed_17x17x768c'): with tf.variable_scope('branch1x1'): branch1x1 = ops.conv2d(net, 192, [1, 1]) with tf.variable_scope('branch7x7'): branch7x7 = ops.conv2d(net, 160, [1, 1]) branch7x7 = ops.conv2d(branch7x7, 160, [1, 7]) branch7x7 = ops.conv2d(branch7x7, 192, [7, 1]) with tf.variable_scope('branch7x7dbl'): branch7x7dbl = ops.conv2d(net, 160, [1, 1]) branch7x7dbl = ops.conv2d(branch7x7dbl, 160, [7, 1]) branch7x7dbl = ops.conv2d(branch7x7dbl, 160, [1, 7]) branch7x7dbl = ops.conv2d(branch7x7dbl, 160, [7, 1]) branch7x7dbl = ops.conv2d(branch7x7dbl, 192, [1, 7]) with tf.variable_scope('branch_pool'): branch_pool = ops.avg_pool(net, [3, 3]) branch_pool = ops.conv2d(branch_pool, 192, [1, 1]) net = tf.concat([branch1x1, branch7x7, branch7x7dbl, branch_pool], 3) end_points['mixed_17x17x768c'] = net # mixed_6: 17 x 17 x 768. with tf.variable_scope('mixed_17x17x768d'): with tf.variable_scope('branch1x1'): branch1x1 = ops.conv2d(net, 192, [1, 1]) with tf.variable_scope('branch7x7'): branch7x7 = ops.conv2d(net, 160, [1, 1]) branch7x7 = ops.conv2d(branch7x7, 160, [1, 7]) branch7x7 = ops.conv2d(branch7x7, 192, [7, 1]) with tf.variable_scope('branch7x7dbl'): branch7x7dbl = ops.conv2d(net, 160, [1, 1]) branch7x7dbl = ops.conv2d(branch7x7dbl, 160, [7, 1]) branch7x7dbl = ops.conv2d(branch7x7dbl, 160, [1, 7]) branch7x7dbl = ops.conv2d(branch7x7dbl, 160, [7, 1]) branch7x7dbl = ops.conv2d(branch7x7dbl, 192, [1, 7]) with tf.variable_scope('branch_pool'): branch_pool = ops.avg_pool(net, [3, 3]) branch_pool = ops.conv2d(branch_pool, 192, [1, 1]) net = tf.concat([branch1x1, branch7x7, branch7x7dbl, branch_pool], 3) end_points['mixed_17x17x768d'] = net # mixed_7: 17 x 17 x 768. with tf.variable_scope('mixed_17x17x768e'): with tf.variable_scope('branch1x1'): branch1x1 = ops.conv2d(net, 192, [1, 1]) with tf.variable_scope('branch7x7'): branch7x7 = ops.conv2d(net, 192, [1, 1]) branch7x7 = ops.conv2d(branch7x7, 192, [1, 7]) branch7x7 = ops.conv2d(branch7x7, 192, [7, 1]) with tf.variable_scope('branch7x7dbl'): branch7x7dbl = ops.conv2d(net, 192, [1, 1]) branch7x7dbl = ops.conv2d(branch7x7dbl, 192, [7, 1]) branch7x7dbl = ops.conv2d(branch7x7dbl, 192, [1, 7]) branch7x7dbl = ops.conv2d(branch7x7dbl, 192, [7, 1]) branch7x7dbl = ops.conv2d(branch7x7dbl, 192, [1, 7]) with tf.variable_scope('branch_pool'): branch_pool = ops.avg_pool(net, [3, 3]) branch_pool = ops.conv2d(branch_pool, 192, [1, 1]) net = tf.concat([branch1x1, branch7x7, branch7x7dbl, branch_pool], 3) end_points['mixed_17x17x768e'] = net # Auxiliary Head logits aux_logits = tf.identity(end_points['mixed_17x17x768e']) with tf.variable_scope('aux_logits'): aux_logits = ops.avg_pool(aux_logits, [5, 5], stride=3, padding='VALID') aux_logits = ops.conv2d(aux_logits, 128, [1, 1], scope='proj') # Shape of feature map before the final layer. shape = aux_logits.get_shape() aux_logits = ops.conv2d(aux_logits, 768, shape[1:3], stddev=0.01, padding='VALID') aux_logits = ops.flatten(aux_logits) aux_logits = ops.fc(aux_logits, num_classes, activation=None, stddev=0.001, restore=restore_logits) end_points['aux_logits'] = aux_logits # mixed_8: 8 x 8 x 1280. # Note that the scope below is not changed to not void previous # checkpoints. # (TODO) Fix the scope when appropriate. with tf.variable_scope('mixed_17x17x1280a'): with tf.variable_scope('branch3x3'): branch3x3 = ops.conv2d(net, 192, [1, 1]) branch3x3 = ops.conv2d(branch3x3, 320, [3, 3], stride=2, padding='VALID') with tf.variable_scope('branch7x7x3'): branch7x7x3 = ops.conv2d(net, 192, [1, 1]) branch7x7x3 = ops.conv2d(branch7x7x3, 192, [1, 7]) branch7x7x3 = ops.conv2d(branch7x7x3, 192, [7, 1]) branch7x7x3 = ops.conv2d(branch7x7x3, 192, [3, 3], stride=2, padding='VALID') with tf.variable_scope('branch_pool'): branch_pool = ops.max_pool(net, [3, 3], stride=2, padding='VALID') net = tf.concat([branch3x3, branch7x7x3, branch_pool], 3) end_points['mixed_17x17x1280a'] = net # mixed_9: 8 x 8 x 2048. with tf.variable_scope('mixed_8x8x2048a'): with tf.variable_scope('branch1x1'): branch1x1 = ops.conv2d(net, 320, [1, 1]) with tf.variable_scope('branch3x3'): branch3x3 = ops.conv2d(net, 384, [1, 1]) branch3x3 = tf.concat([ops.conv2d(branch3x3, 384, [1, 3]), ops.conv2d(branch3x3, 384, [3, 1])], 3) with tf.variable_scope('branch3x3dbl'): branch3x3dbl = ops.conv2d(net, 448, [1, 1]) branch3x3dbl = ops.conv2d(branch3x3dbl, 384, [3, 3]) branch3x3dbl = tf.concat([ops.conv2d(branch3x3dbl, 384, [1, 3]), ops.conv2d(branch3x3dbl, 384, [3, 1])], 3) with tf.variable_scope('branch_pool'): branch_pool = ops.avg_pool(net, [3, 3]) branch_pool = ops.conv2d(branch_pool, 192, [1, 1]) net = tf.concat([branch1x1, branch3x3, branch3x3dbl, branch_pool], 3) end_points['mixed_8x8x2048a'] = net # mixed_10: 8 x 8 x 2048. with tf.variable_scope('mixed_8x8x2048b'): with tf.variable_scope('branch1x1'): branch1x1 = ops.conv2d(net, 320, [1, 1]) with tf.variable_scope('branch3x3'): branch3x3 = ops.conv2d(net, 384, [1, 1]) branch3x3 = tf.concat([ops.conv2d(branch3x3, 384, [1, 3]), ops.conv2d(branch3x3, 384, [3, 1])], 3) with tf.variable_scope('branch3x3dbl'): branch3x3dbl = ops.conv2d(net, 448, [1, 1]) branch3x3dbl = ops.conv2d(branch3x3dbl, 384, [3, 3]) branch3x3dbl = tf.concat([ops.conv2d(branch3x3dbl, 384, [1, 3]), ops.conv2d(branch3x3dbl, 384, [3, 1])], 3) with tf.variable_scope('branch_pool'): branch_pool = ops.avg_pool(net, [3, 3]) branch_pool = ops.conv2d(branch_pool, 192, [1, 1]) net = tf.concat([branch1x1, branch3x3, branch3x3dbl, branch_pool], 3) end_points['mixed_8x8x2048b'] = net # Final pooling and prediction with tf.variable_scope('logits'): shape = net.get_shape() net = ops.avg_pool(net, shape[1:3], padding='VALID', scope='pool') # 1 x 1 x 2048 net = ops.dropout(net, dropout_keep_prob, scope='dropout') net = ops.flatten(net, scope='flatten') # 2048 logits = ops.fc(net, num_classes, activation=None, scope='logits', restore=restore_logits) # 1000 end_points['logits'] = logits end_points['predictions'] = tf.nn.softmax(logits, name='predictions') return logits, end_pointsPrediction code
config = tf.ConfigProto(allow_soft_placement=True) saver = tf.train.import_meta_graph('path/to/meta/graph') graph = tf.get_default_graph() with tf.Session(config=config,graph=graph) as sess: print graph saver.restore(sess,'/path/to/chpk/') init_op = tf.group(tf.initialize_all_variables(), tf.initialize_local_variables()) sess.run(init_op) print ('Restored checkpoint file and graph') tens=image_preprocessing(tf.read_file('/serving/13_left.jpeg')) with slim.arg_scope(inception_arg_scope()): logits = inception_v3(tf.expand_dims(tens,0), num_classes=6, is_training=False) prob = tf.nn.softmax(logits) sess.run(prob)This gives the following error:
FailedPreconditionError (see above for traceback): Attempting to use uninitialized value mixed_17x17x768d/branch7x7dbl/Conv_3/weights_2 [[Node: mixed_17x17x768d/branch7x7dbl/Conv_3/weights_2/read = Identity[T=DT_FLOAT, _class=["loc:@mixed_17x17x768d/branch7x7dbl/Conv_3/weights_2"], _device="/job:localhost/replica:0/task:0/cpu:0"](mixed_17x17x768d/branch7x7dbl/Conv_3/weights_2)]]I am fairly new to Tensorflow so any help here is much appreciated. I am doing something wrong, but just cannot figure it out. Thanks in advance :)
EDIT 1
I restarted my session by reloading the graph and weights into the session. I froze the graph and saved it as frozen_graph.pb. Following is my code:
def freeze_graph(model_folder): # We retrieve our checkpoint fullpath checkpoint = tf.train.get_checkpoint_state(model_folder) input_checkpoint = checkpoint.model_checkpoint_path # We precise the file fullname of our freezed graph absolute_model_folder = "/".join(input_checkpoint.split('/')[:-1]) output_graph = absolute_model_folder + "/frozen_model.pb" # Before exporting our graph, we need to precise what is our output node # This is how TF decides what part of the Graph he has to keep and what part it can dump output_node_names = "tower_0/logits/predictions" # We clear devices to allow TensorFlow to control on which device it will load operations clear_devices = True # We import the meta graph and retrieve a Saver saver = tf.train.import_meta_graph(input_checkpoint + '.meta', clear_devices=clear_devices) # We retrieve the protobuf graph definition graph = tf.get_default_graph() input_graph_def = graph.as_graph_def() # We start a session and restore the graph weights with tf.Session() as sess: saver.restore(sess, input_checkpoint) for op in sess.graph.get_operations(): print(op.name) # We use a built-in TF helper to export variables to constants output_graph_def = graph_util.convert_variables_to_constants( sess, # The session is used to retrieve the weights input_graph_def # The graph_def is used to retrieve the nodes ,output_node_names.split(",")) # The output node names are used to select the usefull nodes # Finally we serialize and dump the output graph to the filesystem with tf.gfile.GFile(output_graph, "wb") as f: f.write(output_graph_def.SerializeToString()) print("%d ops in the final graph." % len(output_graph_def.node)) if __name__ == '__main__': parser = argparse.ArgumentParser() parser.add_argument("--model_folder", type=str, help="Model folder to export") args = parser.parse_args() freeze_graph(args.model_folder)I load the frozen graph into a new session. Following are my node names:
prefix/batch_processing/batch_join/fifo_queue prefix/batch_processing/batch_join/n prefix/batch_processing/batch_join prefix/batch_processing/Reshape/shape prefix/batch_processing/Reshape . . . prefix/logits/logits/weights prefix/logits/logits/weights/read prefix/logits/logits/biases prefix/logits/logits/biases/read prefix/tower_0/logits/logits/xw_plus_b/MatMul prefix/tower_0/logits/logits/xw_plus_b prefix/tower_0/logits/predictionsI use the input node and final node (predictions) to classify a new image. Following is my code for this:
def load_graph(frozen_graph_filename): # We load the protobuf file from the disk and parse it to retrieve the # unserialized graph_def with tf.gfile.GFile(frozen_graph_filename, "rb") as f: graph_def = tf.GraphDef() graph_def.ParseFromString(f.read()) # Then, we can use again a convenient built-in function to import a graph_def into the # current default Graph with tf.Graph().as_default() as graph: tf.import_graph_def( graph_def, input_map=None, return_elements=None, name="prefix", op_dict=None, producer_op_list=None ) return graph #graph = load_graph('/serving/frozen_model.pb') if __name__ == '__main__': import scipy.misc # Let's allow the user to pass the filename as an argument parser = argparse.ArgumentParser() parser.add_argument("--frozen_model_filename", default="/serving/frozen_model.pb", type=str, help="Frozen model file to import") args = parser.parse_args() # We use our "load_graph" function graph = load_graph(args.frozen_model_filename) # We can verify that we can access the list of operations in the graph for op in graph.get_operations(): print(op.name) # prefix/Placeholder/inputs_placeholder # ... # prefix/Accuracy/predictions # We access the input and output nodes x = graph.get_tensor_by_name('prefix/batch_processing/batch_join/fifo_queue:0') y = graph.get_tensor_by_name('prefix/tower_0/logits/predictions:0') image_data = tf.gfile.FastGFile('/serving/13_left.jpeg', 'rb').read() # We launch a Session with tf.Session(graph=graph) as sess: # Note: we didn't initialize/restore anything, everything is stored in the graph_def y_out = sess.run(y, feed_dict={ x: image_data}) # < 45 print(y_out) # [[ False ]] Yay, it works!I get the following error.
Traceback (most recent call last): File "predict_3.py", line 183, in <module> x: image_data}) # < 45 File "/usr/local/lib/python2.7/dist-packages/tensorflow/python/client/session.py", line 767, in run run_metadata_ptr) File "/usr/local/lib/python2.7/dist-packages/tensorflow/python/client/session.py", line 929, in _run subfeed_dtype = subfeed_t.dtype.as_numpy_dtype File "/usr/local/lib/python2.7/dist-packages/tensorflow/python/framework/dtypes.py", line 138, in as_numpy_dtype return _TF_TO_NP[self._type_enum] KeyError: 20Not sure of what is going wrong now. I see my nodes are correct. Any help on this is much appreciated.