__author__ = 'Tony Beltramelli - www.tonybeltramelli.com'

import numpy as np

class Utils:

@staticmethod

def sparsify(label_vector, output_size):

sparse_vector = []

for label in label_vector:

sparse_label = np.zeros(output_size)

sparse_label[label] = 1

sparse_vector.append(sparse_label)

return np.array(sparse_vector)

@staticmethod

def get_preprocessed_img(img_path, image_size):

import cv2

img = cv2.imread(img_path)

img = cv2.resize(img, (image_size, image_size))

img = img.astype('float32')

img /= 255

return img

@staticmethod

def show(image):

import cv2

cv2.namedWindow("view", cv2.WINDOW_AUTOSIZE)

cv2.imshow("view", image)

cv2.waitKey(0)

cv2.destroyWindow("view")