image_watermark.py

from PIL import Image,ImageDraw, ImageFont, ImageEnhance

def image_watermark(request,image_id):
	photo = Photo.objects.get(pk=image_id)
	basewidth = 640
	watermark = Image.open('{0}/{1}'.format(settings.MEDIA_ROOT,'art1.png'))
	img = Image.open(photo.photo.file)
	wpercent = (basewidth/float(img.size[0]))
	hsize = int((float(wpercent)*float(img.size[1])))
	img = img.resize((basewidth,hsize),Image.ANTIALIAS)
	#tmp_file = tempfile.mktemp()
	img.paste(watermark,(img.size[0]-watermark.size[0],img.size[1]-watermark.size[1]),watermark)
	#image = img.resize((1400, 560), Image.ANTIALIAS)
	img.save('{0}/{1}'.format(settings.MEDIA_ROOT,photo.watermarked_image.name), quality=70,opacity=20) #The Quality was 100
	#photo.save()
	
	wrapper = FileWrapper(open(photo.watermarked_image.url, 'rb'))
	response = StreamingHttpResponse(wrapper, 'image/jpeg')
	response['Content-Length'] = os.path.getsize(photo.watermarked_image.url)
	response['Content-Disposition'] = 'attachment; filename=photo.jpg'
	return response