predict.py

import tensorflow as tf
import numpy as np
import os,glob,cv2
import sys,argparse


# First, pass the path of the image
dir_path = os.path.dirname(os.path.realpath(__file__))
image_path=sys.argv[1] 
filename = dir_path +'/' +image_path
image_size=32
num_channels=3
images = []
# Reading the image using OpenCV
image = cv2.imread(filename)
# Resizing the image to our desired size and preprocessing will be done exactly as done during training
#image = cv2.resize(image, (image_size, image_size), cv2.INTER_LINEAR)
image = cv2.resize(image, (image_size, image_size),0,0, cv2.INTER_LINEAR)
images.append(image)
images = np.array(images, dtype=np.uint8)
images = images.astype('float32')
images = np.multiply(images, 1.0/255.0) 


# labels
directory='training_data/'

labels=[]

for root, dirs, files in os.walk(directory):
    for currentclass in dirs:
        labels.append(currentclass)

print (labels)
#The input to the network is of shape [None image_size image_size num_channels]. Hence we reshape.
x_batch = images.reshape(1, image_size,image_size,num_channels)

## Let us restore the saved model 
sess = tf.Session()

# Step-1: Recreate the network graph. At this step only graph is created.
saver = tf.train.import_meta_graph('my-model.meta')

# Step-2: Now let's load the weights saved using the restore method.
saver.restore(sess, tf.train.latest_checkpoint('./'))

# Accessing the default graph which we have restored
graph = tf.get_default_graph()

# Now, let's get hold of the op that we can be processed to get the output.
# In the original network y_pred is the tensor that is the prediction of the network
y_pred = graph.get_tensor_by_name("y_pred:0")

## Let's feed the images to the input placeholders
x= graph.get_tensor_by_name("input_images:0") 
y_true = graph.get_tensor_by_name("y_true:0") 
y_test_images = np.zeros((1, len(labels))) 


### Creating the feed_dict that is required to be fed to calculate y_pred 
feed_dict_testing = {x: x_batch, y_true: y_test_images}
result=sess.run(y_pred, feed_dict=feed_dict_testing)

# result is of this format [probabiliy_of_rose probability_of_sunflower]


result= result.reshape([-1])
top_k = result.argsort()[-5:][::-1]
for i in top_k:
    print(labels[i], result[i])
#print(labels)
#print(result)