How To Store An Image Into Redis Using Python / Pil

I'm using python and the Image module(PIL) to process images. I want to store the raw bits stream of the image object to redis so that others can directly read the images from redi

Solution 1:

Using PIL 1.1.7, redis-2.7.2 pip module, and redis-2.4.10 I was able to get this working:

import Image
import redis
import StringIO

output = StringIO.StringIO()
im = Image.open("/home/cwgem/Pictures/portrait.png")
im.save(output, format=im.format)

r = redis.StrictRedis(host='localhost')
r.set('imagedata', output.getvalue())
output.close()

I found that Image.tostring was not reliable, so this method uses StringIO to make a string appear to be a file. The format=im.format is needed because StringIO doesn't have an "extension". I then tested the image data was saved okay by doing:

redis-cli --raw get'imagedata' >test.png

and verifying I got back an image.

Solution 2:

import redis
r =  redis.StrictRedis()
img = open("/path/to/img.jpeg","rb").read()
r.set("bild1",img)

works here too!