[Image-SIG] reaching memory limits with crop method]

Fri Sep 9 12:32:58 CEST 2005

Fredrik Lundh said:
>following up to the response you got may also be a good
>idea:

My apologies, I see that I accidentally replied to your personal email
instead of the list. Here is it again. Does this help?

---------------------------- Original Message ----------------------------
Subject: Re: [Image-SIG] reaching memory limits with crop method
From:    "Adam J Smith" <ajs17 at cornell.edu>
Date:    Wed, August 31, 2005 1:45 pm
To:      "Fredrik Lundh" <fredrik at pythonware.com>
--------------------------------------------------------------------------

Fredrik,

Thanks for the offer to help. The following information is from a
different image than the original one that I emailed about, but this image
also causes the same memory error.

Also, I tried modifying the code to do a EXTENT transform instead of a
crop, but that method also calls load() and gives me an identical error
message.

>>> im = PIL.Image.open('/home/ajs17/Desktop/test.tif');
>>> im.mode
'RGB'
>>> im.size
(24000, 36000)
>>> im.tile
[('raw', (0, 0, 24000, 64), 8, ('RGB', 0, 1)), ('raw', (0, 64, 24000,
128), 4608008, ('RGB', 0, 1)), ('raw', (0, 128, 24000, 192), 9216008,
('RGB', 0, 1)), ('raw', (0, 192, 24000, 256), 13824008, ('RGB', 0, 1)),
('raw', (0, 256, 24000, 320), 18432008, ('RGB', 0, 1)), ('raw', (0, 320,
24000, 384), 23040008, ('RGB', 0, 1)), ('raw', (0, 384, 24000, 448),
27648008, ('RGB', 0, 1)), ('raw', (0, 448, 24000, 512), 32256008, ('RGB',
0, 1)), ('raw', (0, 512, 24000, 576), 36864008, ('RGB', 0, 1)), ('raw',
(0, 576, 24000, 640), 41472008, ('RGB', 0, 1)), ('raw', (0, 640, 24000,
704), 46080008, ('RGB', 0, 1)), ('raw', (0, 704, 24000, 768), 50688008,
('RGB', 0, 1)), ('raw', (0, 768, 24000, 832), 55296008, ('RGB', 0, 1)),
('raw', (0, 832, 24000, 896), 59904008, ('RGB', 0, 1)), ('raw', (0, 896,
24000, 960), 64512008, ('RGB', 0, 1)), ('raw', (0, 960, 24000, 1024),
69120008, ('RGB', 0, 1)), ('raw', (0, 1024, 24000, 1088), 73728008,
('RGB', 0, 1)), ('raw', (0, 1088, 24000, 1152), 78336008, ('RGB', 0, 1)),
('raw', (0, 1152, 24000, 1216), 82944008, ('RGB', 0, 1)), ('raw', (0,
1216, 24000, 1280), 87552008, ('RGB', 0, 1)), ('raw', (0, 1280, 24000,
1344), 92160008, ('RGB', 0, 1)), ('raw', (0, 1344, 24000, 1408), 96768008,
('RGB', 0, 1)), ('raw', (0, 1408, 24000, 1472), 101376008, ('RGB', 0, 1)),
('raw', (0, 1472, 24000, 1536), 105984008, ('RGB', 0, 1)), ('raw', (0,
1536, 24000, 1600), 110592008, ('RGB', 0, 1)), ('raw', (0, 1600, 24000,
1664), 115200008, ('RGB', 0, 1)), ('raw', (0, 1664, 24000, 1728),
119808008, ('RGB', 0, 1)), ('raw', (0, 1728, 24000, 1792), 124416008,
('RGB', 0, 1)), ('raw', (0, 1792, 24000, 1856), 129024008, ('RGB', 0, 1)),
('raw', (0, 1856, 24000, 1920), 133632008, ('RGB', 0, 1)), ('raw', (0,
1920, 24000, 1984), 138240008, ('RGB', 0, 1)), ('raw', (0, 1984, 24000,
2048), 142848008, ('RGB', 0, 1)), ('raw', (0, 2048, 24000, 2112),
147456008, ('RGB', 0, 1)), ('raw', (0, 2112, 24000, 2176), 152064008,
('RGB', 0, 1)), ('raw', (0, 2176, 24000, 2240), 156672008, ('RGB', 0, 1)),
('raw', (0, 2240, 24000, 2304), 161280008, ('RGB', 0, 1)), ('raw', (0,
2304, 24000, 2368), 165888008, ('RGB', 0, 1)), ('raw', (0, 2368, 24000,
2432), 170496008, ('RGB', 0, 1)), ('raw', (0, 2432, 24000, 2496),
175104008, ('RGB', 0, 1)), ('raw', (0, 2496, 24000, 2560), 179712008,
('RGB', 0, 1)), ('raw', (0, 2560, 24000, 2624), 184320008, ('RGB', 0, 1)),
('raw', (0, 2624, 24000, 2688), 188928008, ('RGB', 0, 1)), ('raw', (0,
2688, 24000, 2752), 193536008, ('RGB', 0, 1)), ('raw', (0, 2752, 24000,
2816), 198144008, ('RGB', 0, 1)), ('raw', (0, 2816, 24000, 2880),
202752008, ('RGB', 0, 1)), ('raw', (0, 2880, 24000, 2944), 207360008,
('RGB', 0, 1)), ('raw', (0, 2944, 24000, 3008), 211968008, ('RGB', 0, 1)),
('raw', (0, 3008, 24000, 3072), 216576008, ('RGB', 0, 1)), ('raw', (0,
3072, 24000, 3136), 221184008, ('RGB', 0, 1)), ('raw', (0, 3136, 24000,
3200), 225792008, ('RGB', 0, 1)), ('raw', (0, 3200, 24000, 3264),
230400008, ('RGB', 0, 1)), ('raw', (0, 3264, 24000, 3328), 235008008,
('RGB', 0, 1)), ('raw', (0, 3328, 24000, 3392), 239616008, ('RGB', 0, 1)),
('raw', (0, 3392, 24000, 3456), 244224008, ('RGB', 0, 1)), ('raw', (0,
3456, 24000, 3520), 248832008, ('RGB', 0, 1)), ('raw', (0, 3520, 24000,
3584), 253440008, ('RGB', 0, 1)), ('raw', (0, 3584, 24000, 3648),
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('raw', (0, 3776, 24000, 3840), 271872008, ('RGB', 0, 1)), ('raw', (0,
3840, 24000, 3904), 276480008, ('RGB', 0, 1)), ('raw', (0, 3904, 24000,
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285696008, ('RGB', 0, 1)), ('raw', (0, 4032, 24000, 4096), 290304008,
('RGB', 0, 1)), ('raw', (0, 4096, 24000, 4160), 294912008, ('RGB', 0, 1)),
('raw', (0, 4160, 24000, 4224), 299520008, ('RGB', 0, 1)), ('raw', (0,
4224, 24000, 4288), 304128008, ('RGB', 0, 1)), ('raw', (0, 4288, 24000,
4352), 308736008, ('RGB', 0, 1)), ('raw', (0, 4352, 24000, 4416),
313344008, ('RGB', 0, 1)), ('raw', (0, 4416, 24000, 4480), 317952008,
('RGB', 0, 1)), ('raw', (0, 4480, 24000, 4544), 322560008, ('RGB', 0, 1)),
('raw', (0, 4544, 24000, 4608), 327168008, ('RGB', 0, 1)), ('raw', (0,
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('raw', (0, 5312, 24000, 5376), 382464008, ('RGB', 0, 1)), ('raw', (0,
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('raw', (0, 5696, 24000, 5760), 410112008, ('RGB', 0, 1)), ('raw', (0,
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2566656008L, ('RGB', 0, 1)), ('raw', (0, 35712, 24000, 35776),
2571264008L, ('RGB', 0, 1)), ('raw', (0, 35776, 24000, 35840),
2575872008L, ('RGB', 0, 1)), ('raw', (0, 35840, 24000, 35904),
2580480008L, ('RGB', 0, 1)), ('raw', (0, 35904, 24000, 35968),
2585088008L, ('RGB', 0, 1)), ('raw', (0, 35968, 24000, 36000),
2589696008L, ('RGB', 0, 1))]

Fredrik Lundh said:
> Adam J Smith wrote:
>
>> We are encountering memory errors while processing very large images (over
>> 3Gb TIFFs, 17888x45408 px). We are trying to make "tiles" of the image by
>> calling PIL's crop method and saving the resulting images.
>
> if you open such a file in PIL, what does the "tile" attribute contain?
can you try the following on your files and post the result?
>
>     >>> im = Image.open("verylargetiff.tif")
>     >>> im.mode
>     >>> im.size
>     >>> im.tile
>
> </F>
>
>
>
>
>

____________________________
adam smith
ajs17 at cornell.edu
255-8893
215 ccc

____________________________
adam smith
ajs17 at cornell.edu
255-8893
215 ccc

Fredrik Lundh said:
> Adam J Smith wrote:
>
>> Just following up to see if anyone out there has any thoughts on my
>> original post below, as my own research into the issue has not gotten me
>> very far. Any help at all will be greatly appreciated.
>
> following up to the response you got may also be a good
> idea:
>
> ----- Original Message -----
> From: "Fredrik Lundh" <fredrik at pythonware.com>
> Newsgroups: gmane.comp.python.image
> Sent: Wednesday, August 31, 2005 5:47 PM
> Subject: Re: reaching memory limits with crop method
>
>
>> Adam J Smith wrote:
>>
>>> We are encountering memory errors while processing very large images
>>> (over
>>> 3Gb TIFFs, 17888x45408 px). We are trying to make "tiles" of the image
>>> by
>>> calling PIL's crop method and saving the resulting images.
>>
>> if you open such a file in PIL, what does the "tile" attribute contain?
>> can you try the following on your files and post the result?
>>
>>    >>> im = Image.open("verylargetiff.tif")
>>    >>> im.mode
>>    >>> im.size
>>    >>> im.tile
>>
>> </F>
>
>
>
>
>

____________________________
adam smith
ajs17 at cornell.edu
255-8893
215 ccc