measure_energy_iot/image_compression.py

   1 from PIL import Image
   2 import time
   3 import cv2
   4 import subprocess
   5
   6 import sys
   7
   8 quality=int(sys.argv[1])
   9 print("quality ",quality)
  10
  11 im=Image.open("lena.jpg")
  12 elapsed_time=0
  13 t = time.time()
  14 for i in range(10):
  15
  16     im.save("lena2.jpg",quality=quality)
  17 elapsed_time += time.time() - t
  18
  19 print("time pil",elapsed_time)
  20
  21
  22
  23
  24 elapsed_time=0
  25 t = time.time()
  26 for i in range(10):
  27
  28     im2=im.resize((256, 256))
  29     im2.save("lena3.jpg",quality=quality)
  30 elapsed_time += time.time() - t
  31 print("time resize + pil",elapsed_time)
  32
  33 """
  34
  35
  36 img = cv2.imread('lena.jpg')
  37 elapsed_time=0
  38
  39
  40 for i in range(100):
  41     t = time.process_time()
  42     cv2.imwrite("lena4.jpg", img,[int(cv2.IMWRITE_JPEG_QUALITY), quality])
  43     elapsed_time += time.process_time() - t
  44
  45 print("time cv2",elapsed_time)
  46
  47
  48 elapsed_time=0
  49 for i in range(100):
  50     t = time.process_time()
  51     resized = cv2.resize(img, (256,256), interpolation=cv2.INTER_LINEAR)
  52     cv2.imwrite("lena5.jpg", resized,[int(cv2.IMWRITE_JPEG_QUALITY), quality])
  53     elapsed_time += time.process_time() - t
  54
  55 print("time resize + cv2",elapsed_time)
  56 """
  57
  58
  59 elapsed_time=0
  60 t = time.time()
  61 for i in range(10):
  62
  63     proc=subprocess.Popen("scp lena2.jpg bilbo.iut-bm.univ-fcomte.fr:/tmp", shell=True)
  64     proc.wait()
  65 elapsed_time += time.time() - t
  66 print("ssh normal",elapsed_time)
  67
  68
  69 elapsed_time=0
  70 t = time.time()
  71 for i in range(10):
  72
  73     proc=subprocess.Popen("scp lena3.jpg bilbo.iut-bm.univ-fcomte.fr:/tmp", shell=True)
  74     proc.wait()
  75 elapsed_time += time.time() - t
  76 print("ssh reduce",elapsed_time)