Read/Open image from instance of Python io.BufferedReader class
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I'm struggling to properly open a TIFF image from an instance of Python's io.BufferedReader class. I download the image from a GCS path using the below lib, but I can't open seem to open the image with traditional tools.
# returns the <_io.BufferedReader>
file = beam.io.gcp.gcsio.GcsIO().open("<GCS_PATH>", 'r')
from PIL import Image
img = Image.open(file.read()) <---- Fails with "TypeError: embedded NUL character"
img = Image.open(file.raw) <--- Fails when any operations are performed with "IOError(err)"
I am open to other libraries besides PIL.
UPDATE
The following also fails:
img = Image.open(file)
It fails with an IOError, stating tempfile.tif: Cannot read TIFF header.
python image opencv python-imaging-library
google-cloud-dataflow asked Nov 20 at 14:48
Ryan Stack
243113
|
show 5 more comments
up vote
2
down vote
favorite
I'm struggling to properly open a TIFF image from an instance of Python's io.BufferedReader class. I download the image from a GCS path using the below lib, but I can't open seem to open the image with traditional tools.
# returns the <_io.BufferedReader>
file = beam.io.gcp.gcsio.GcsIO().open("<GCS_PATH>", 'r')
from PIL import Image
img = Image.open(file.read()) <---- Fails with "TypeError: embedded NUL character"
img = Image.open(file.raw) <--- Fails when any operations are performed with "IOError(err)"
I am open to other libraries besides PIL.
UPDATE
The following also fails:
img = Image.open(file)
It fails with an IOError, stating tempfile.tif: Cannot read TIFF header.
python image opencv python-imaging-library
google-cloud-dataflow asked Nov 20 at 14:48
Ryan Stack
243113
img = Image.open(bufferedreader)
– Silencer 金
Nov 21 at 0:43
Ok. I think there may be an issue with the version of PIL I am using, because when I do that and then proceed with any operation such asimg_array = np.array(img, dtype=np.uint8)orimg.show()I get an error that starts withtempfile.tif: Cannot read TIFF header.and end withraise IOError(err) IOError: -2
– Ryan Stack
Nov 21 at 1:12
IOError: -2: Make sure the file exists.os.path.exists(fpath)
– Silencer 金
Nov 21 at 1:19
Well, I think the file is represented by the instance of io.BufferedReader class that I set to file variable. This example works with PNG images, so I think this is an issue with the multipage TIFF images
– Ryan Stack
Nov 21 at 17:17
ABufferedReaderis for sequential input, so if the TIFF code is trying to seek it's going to fail.
– Mark Ransom
Nov 21 at 17:25
|
show 5 more comments
up vote
2
down vote
favorite
up vote
2
down vote
favorite
I'm struggling to properly open a TIFF image from an instance of Python's io.BufferedReader class. I download the image from a GCS path using the below lib, but I can't open seem to open the image with traditional tools.
# returns the <_io.BufferedReader>
file = beam.io.gcp.gcsio.GcsIO().open("<GCS_PATH>", 'r')
from PIL import Image
img = Image.open(file.read()) <---- Fails with "TypeError: embedded NUL character"
img = Image.open(file.raw) <--- Fails when any operations are performed with "IOError(err)"
I am open to other libraries besides PIL.
UPDATE
The following also fails:
img = Image.open(file)
It fails with an IOError, stating tempfile.tif: Cannot read TIFF header.
python image opencv python-imaging-library
google-cloud-dataflow asked Nov 20 at 14:48
Ryan Stack
243113
I'm struggling to properly open a TIFF image from an instance of Python's io.BufferedReader class. I download the image from a GCS path using the below lib, but I can't open seem to open the image with traditional tools.
# returns the <_io.BufferedReader>
file = beam.io.gcp.gcsio.GcsIO().open("<GCS_PATH>", 'r')
from PIL import Image
img = Image.open(file.read()) <---- Fails with "TypeError: embedded NUL character"
img = Image.open(file.raw) <--- Fails when any operations are performed with "IOError(err)"
I am open to other libraries besides PIL.
UPDATE
The following also fails:
img = Image.open(file)
It fails with an IOError, stating tempfile.tif: Cannot read TIFF header.
python image opencv python-imaging-library
google-cloud-dataflow python image opencv python-imaging-library
google-cloud-dataflow asked Nov 20 at 14:48
Ryan Stack
243113
asked Nov 20 at 14:48
Ryan Stack
243113
edited Nov 21 at 17:09
asked Nov 20 at 14:48
Ryan Stack
243113
asked Nov 20 at 14:48
Ryan Stack
243113
asked Nov 20 at 14:48
Ryan Stack
243113
243113
img = Image.open(bufferedreader)
– Silencer 金
Nov 21 at 0:43
Ok. I think there may be an issue with the version of PIL I am using, because when I do that and then proceed with any operation such asimg_array = np.array(img, dtype=np.uint8)orimg.show()I get an error that starts withtempfile.tif: Cannot read TIFF header.and end withraise IOError(err) IOError: -2
– Ryan Stack
Nov 21 at 1:12
IOError: -2: Make sure the file exists.os.path.exists(fpath)
– Silencer 金
Nov 21 at 1:19
Well, I think the file is represented by the instance of io.BufferedReader class that I set to file variable. This example works with PNG images, so I think this is an issue with the multipage TIFF images
– Ryan Stack
Nov 21 at 17:17
ABufferedReaderis for sequential input, so if the TIFF code is trying to seek it's going to fail.
– Mark Ransom
Nov 21 at 17:25
|
show 5 more comments
img = Image.open(bufferedreader)
– Silencer 金
Nov 21 at 0:43
Ok. I think there may be an issue with the version of PIL I am using, because when I do that and then proceed with any operation such asimg_array = np.array(img, dtype=np.uint8)orimg.show()I get an error that starts withtempfile.tif: Cannot read TIFF header.and end withraise IOError(err) IOError: -2
– Ryan Stack
Nov 21 at 1:12
IOError: -2: Make sure the file exists.os.path.exists(fpath)
– Silencer 金
Nov 21 at 1:19
Well, I think the file is represented by the instance of io.BufferedReader class that I set to file variable. This example works with PNG images, so I think this is an issue with the multipage TIFF images
– Ryan Stack
Nov 21 at 17:17
ABufferedReaderis for sequential input, so if the TIFF code is trying to seek it's going to fail.
– Mark Ransom
Nov 21 at 17:25
img = Image.open(bufferedreader)– Silencer 金
Nov 21 at 0:43
img = Image.open(bufferedreader)– Silencer 金
Nov 21 at 0:43
Ok. I think there may be an issue with the version of PIL I am using, because when I do that and then proceed with any operation such as
img_array = np.array(img, dtype=np.uint8) or img.show() I get an error that starts with tempfile.tif: Cannot read TIFF header. and end with raise IOError(err) IOError: -2– Ryan Stack
Nov 21 at 1:12
Ok. I think there may be an issue with the version of PIL I am using, because when I do that and then proceed with any operation such as
img_array = np.array(img, dtype=np.uint8) or img.show() I get an error that starts with tempfile.tif: Cannot read TIFF header. and end with raise IOError(err) IOError: -2– Ryan Stack
Nov 21 at 1:12
IOError: -2: Make sure the file exists. os.path.exists(fpath)– Silencer 金
Nov 21 at 1:19
IOError: -2: Make sure the file exists. os.path.exists(fpath)– Silencer 金
Nov 21 at 1:19
Well, I think the file is represented by the instance of io.BufferedReader class that I set to file variable. This example works with PNG images, so I think this is an issue with the multipage TIFF images
– Ryan Stack
Nov 21 at 17:17
Well, I think the file is represented by the instance of io.BufferedReader class that I set to file variable. This example works with PNG images, so I think this is an issue with the multipage TIFF images
– Ryan Stack
Nov 21 at 17:17
A
BufferedReader is for sequential input, so if the TIFF code is trying to seek it's going to fail.– Mark Ransom
Nov 21 at 17:25
A
BufferedReader is for sequential input, so if the TIFF code is trying to seek it's going to fail.– Mark Ransom
Nov 21 at 17:25
|
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img = Image.open(bufferedreader)– Silencer 金
Nov 21 at 0:43
Ok. I think there may be an issue with the version of PIL I am using, because when I do that and then proceed with any operation such as
img_array = np.array(img, dtype=np.uint8)orimg.show()I get an error that starts withtempfile.tif: Cannot read TIFF header.and end withraise IOError(err) IOError: -2– Ryan Stack
Nov 21 at 1:12
IOError: -2: Make sure the file exists.os.path.exists(fpath)– Silencer 金
Nov 21 at 1:19
Well, I think the file is represented by the instance of io.BufferedReader class that I set to file variable. This example works with PNG images, so I think this is an issue with the multipage TIFF images
– Ryan Stack
Nov 21 at 17:17
A
BufferedReaderis for sequential input, so if the TIFF code is trying to seek it's going to fail.– Mark Ransom
Nov 21 at 17:25