PIL and image file size

[Christian Tismer]

Fabrizio wrote:
> Hi,
> 
> I want to use PIL to add a black frame to my images.
> 
> The problem is that the size of the resulting pictures is much bigger that
> the original ones; more than twice as much (e.g. 348Kb vs. 104Kb) !

...

> import Image, ImageDraw
> 
> image1 = Image.open("My_image.jpg")
> # Resolution of My_image.jpg is 640x480
> image2 = Image.new("RGB", [660, 500], 0)

Note: 660*500 = 330000 ~= 330 kb.
Allow for another 18 KB for shipping and handling,
and you can see what happens......

> image2.paste(image1, (10,10))
> 
> image2.show()
> image2.save('My_new_image.jpg',"JPEG", quality = 100)

......if you don't allow to compress the jpeg file !!! at all.

ciao - chris

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