The 16 bit mode in not supported well (or not at all) via the array interface, so way I use it is via the good old buffer/string interface:
>>> from numpy import * >>> import Image >>> a = arange(65536, dtype=uint16).reshape(256, 256) >>> a.shape (256, 256) >>> ima = Image.frombuffer('I;16', [256,256], a.data) Warning (from warnings module): File "__main__", line 1 RuntimeWarning: the frombuffer defaults may change in a future release; for portability, change the call to read: frombuffer(mode, size, data, 'raw', mode, 0, 1) >>> ima.save('16bits.tif') >>> imb = Image.open('16bits.tif') >>> stb = imb.tostring() >>> len(stb) 131072 >>> b = fromstring(stb, dtype=uint16).reshape(256, 256) >>> b.max() 65535 -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Mon 22-Oct-07 08:54 To: Nadav Horesh Subject: RE: [Image-SIG] how to read tif image How did you read the Images? Bradley -----Oorspronkelijk bericht----- Van: Nadav Horesh [mailto:[EMAIL PROTECTED] Verzonden: Monday, October 22, 2007 7:59 AM Aan: W. Bryan Smith; Broeke, B.R. ten (LKEB) CC: Image-SIG@python.org Onderwerp: RE: [Image-SIG] how to read tif image I did use PIL to read/write 16 bit images (could be also 32 bits, but I am not sure) Nadav. -----Original Message----- From: [EMAIL PROTECTED] on behalf of W. Bryan Smith Sent: Wed 17-Oct-07 16:45 To: [EMAIL PROTECTED] Cc: Image-SIG@python.org Subject: Re: [Image-SIG] how to read tif image if i remember correctly, pil doesn't deal with 16-bit tif. i think there was a patch around or something.... anyone have the info on this? tif does have a very specific header, including an offset (in bytes) to the image pixels, so it should be pretty easy to use a binary read operation to get your pixels. On 10/11/07, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: > > Hello, > > > > How do I read a (I;16) TIFF image with PIL? > > If I use the basic code: > > im = Image.open("file.tif") > > im.show() > > My output is a white screen. If I open the image with ImageJ, I have no > problems. > > > > Any suggestions? > > Thanx in advance. > > > > Bradley > > _______________________________________________ > Image-SIG maillist - Image-SIG@python.org > http://mail.python.org/mailman/listinfo/image-sig > > _______________________________________________ Image-SIG maillist - Image-SIG@python.org http://mail.python.org/mailman/listinfo/image-sig