Re: cropping a random part of an image

[drewes . mil]

Hi Peter, Hi Robin, 

thanks for your help, and especially for the code ;)

@Peter: thanks for the links, I know, it is always better to write the code 
than to copy and paste!

@Robin: the question, iḿ trying to answer is, if good pictures, in this case 
portraits, also have good "Parts", so if the beauty of a picture can be found 
in its crops, too.
In the and it is for a deep CNN and I hope it will work!

Thanks again!

Steffen
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Re: cropping a random part of an image

[drewes . mil]

Hi Robin,

I tried to understand and run your code, and I get the Error:

"File "Rand_Crop.py", line 15, in 
with Image.open(os.path.join(INPATH, file)) as im:
  File "/usr/lib/python2.7/dist-packages/PIL/Image.py", line 528, in __getattr__
raise AttributeError(name)
AttributeError: __exit__"

I looked up the Image.py and don't know, why the Name could not be read out.

If i print the names of the images out, before the first "for" everything is 
fine, but it dosen't work after line 15.

I try to figure this out, but if someone has a hint, I would be happy!


Steffen 
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Re: cropping a random part of an image

[drewes . mil]

Ok, did it :)

import random, os, time
from PIL import Image

INPATH = ('/home/sdrewes/Desktop/Portaits/Bilder/Test/')
OUTPATH = ('/home/sdrewes/Desktop/Portaits/Bilder/Gut_Crop/')

dx = dy = 228
tilesPerImage = 100

files = os.listdir(INPATH)
numOfImages = len(files)
print(files)
t = time.time()
for file in files:
im = Image.open(INPATH+file)
for i in range(1, tilesPerImage+1):
newname = file.replace('.', '_{:03d}.'.format(i))
w, h = im.size
x = random.randint(0, w-dx-1)
y = random.randint(0, h-dy-1)
print("Cropping {}: {},{} -> {},{}".format(file, x,y, x+dx, 
y+dy))
im.crop((x,y, x+dx, y+dy))\
.save(os.path.join(OUTPATH, newname))

t = time.time()-t
print("Done {} images in {:.2f}s".format(numOfImages, t))
print("({:.1f} images per second)".format(numOfImages/t))
print("({:.1f} tiles per second)".format(tilesPerImage*numOfImages/t)) 
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Re: cropping a random part of an image

[drewes . mil]

Ok, now it works for me!
Thanks again!

import random, os, time
from PIL import Image

INPATH = ('/home/.../Start/')
OUTPATH = ('/home/.../Ziel/')

dx = dy = 228
tilesPerImage = 25

files = os.listdir(INPATH)
numOfImages = len(files)
print(files)
t = time.time()
for file in files:
im = Image.open(INPATH+file)
for i in range(1, tilesPerImage+1):
newname = file.replace('.', '_{:03d}.'.format(i))
w, h = im.size
x = random.randint(0, w-dx-1)
y = random.randint(0, h-dy-1)
print("Cropping {}: {},{} -> {},{}".format(file, x,y, x+dx, 
y+dy))
im.crop((x,y, x+dx, y+dy))\
.save(os.path.join(OUTPATH, newname))

t = time.time()-t
print("Done {} images in {:.2f}s".format(numOfImages, t))
print("({:.1f} images per second)".format(numOfImages/t))
print("({:.1f} tiles per second)".format(tilesPerImage*numOfImages/t)) 
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Saving Consol outputs in a python script

[drewes . mil]

Hello, I'm new to python and have a Question.

I'm running a c++ file with a python script like:

import os
import subprocess

subprocess.call(["~/caffe/build/examples/cpp_classification/classification", 
"deploy.prototxt", "this.caffemodel", "mean.binaryproto", "labels.txt", 
"Bild2.jpg"]) 

and it runes fine. On the console it gives me the output:

~/Desktop/Downloader/Sym+$ python Run_C.py 
-- Prediction for Bild2.jpg --
0.9753 - "Class 1"
0.0247 - "Class 2"


What I need are the 2 values for the 2 classes saved in a variable in the .py 
script, so that I can write them into a text file.

Would be super nice if someone could help me!


have a nice day!

Steffen
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cropping a random part of an image

[drewes . mil]

Hi,

I'm new to python and I have 30.000 pictures.
I need to crop, let's say 100, parts of 256x256, randomly out of every picture.

I cant find an answer in the net, would be nice if someone could help me out!

Thanks!

Steffen
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