Preserve EXIF after image resize and rotation then save in python












0















I've read another thread on SO regarding image rotation here:
PIL thumbnail is rotating my image?



and I've read another thread on SO about EXIF preservation here:
Preserve exif data of image with PIL when resize(create thumbnail)



Unfortunately, after implementing the suggestions above, it seems that I can only have either:
1) a saved rotated image without EXIF data
or
2) a non-rotated image with EXIF data
but it seems that I can't have both.



I'm hoping I can get some help to fix what I thought was a real simple problem, but has been turning into a scream-fest against my computer for the past few hours.



Here's the relevant parts of my code:



from PIL import Image, ExifTags
import piexif
currImage = Image.open(inFileName)
exif_dict = piexif.load(currImage.info["exif"])

for orientation in ExifTags.TAGS.keys():
if ExifTags.TAGS[orientation]=='Orientation':
break
exif=dict(currImage._getexif().items())

if exif[orientation] == 3:
currImage=currImage.rotate(180, expand=True)
elif exif[orientation] == 6:
currImage=currImage.rotate(270, expand=True)
elif exif[orientation] == 8:
currImage=currImage.rotate(90, expand=True)

currWidth, currHeight = currImage.size

# Here is where I can only do one or the other. Don't know enough about how to get both
exif_bytes = piexif.dump(exif_dict)
#exif_bytes = piexif.dump(exif)

maxImageDimension = [1280, 640, 360, 160]
for imgDim in maxImageDimension:
thumbRatio = imgDim / max(currWidth, currHeight)
# note that because Python's round function is mathematically incorrect, I have to do the following workaround
newWidth = int(Decimal(str(thumbRatio * currWidth)).quantize(Decimal('0.'), rounding=ROUND_UP))
newHeight = int(Decimal(str(thumbRatio * currHeight)).quantize(Decimal('0.'), rounding=ROUND_UP))
# copy currImage object
newImage = currImage
# note that I have to do resize method because thumbnail method has same rounding problem
newImage = newImage.resize((newWidth, newHeight))
# save the thumbnail
if imgDim == 1280:
outFileName = destinationDir + '\' + file[:len(file)-4] + '.jpg'
else:
outFileName = destinationDir + '\' + file[:len(file)-4] + '-' + str(newWidth) + 'x' + str(newHeight) + '.jpg'
print('Writing: ' + outFileName)

# Here is where I have to choose between exif or exif_bytes when saving but I can only get one or the other desired result
newImage.save(outFileName, exif=exif_bytes)

print('n')

currImage.close()
newImage.close()


Thanks in advance.










share|improve this question



























    0















    I've read another thread on SO regarding image rotation here:
    PIL thumbnail is rotating my image?



    and I've read another thread on SO about EXIF preservation here:
    Preserve exif data of image with PIL when resize(create thumbnail)



    Unfortunately, after implementing the suggestions above, it seems that I can only have either:
    1) a saved rotated image without EXIF data
    or
    2) a non-rotated image with EXIF data
    but it seems that I can't have both.



    I'm hoping I can get some help to fix what I thought was a real simple problem, but has been turning into a scream-fest against my computer for the past few hours.



    Here's the relevant parts of my code:



    from PIL import Image, ExifTags
    import piexif
    currImage = Image.open(inFileName)
    exif_dict = piexif.load(currImage.info["exif"])

    for orientation in ExifTags.TAGS.keys():
    if ExifTags.TAGS[orientation]=='Orientation':
    break
    exif=dict(currImage._getexif().items())

    if exif[orientation] == 3:
    currImage=currImage.rotate(180, expand=True)
    elif exif[orientation] == 6:
    currImage=currImage.rotate(270, expand=True)
    elif exif[orientation] == 8:
    currImage=currImage.rotate(90, expand=True)

    currWidth, currHeight = currImage.size

    # Here is where I can only do one or the other. Don't know enough about how to get both
    exif_bytes = piexif.dump(exif_dict)
    #exif_bytes = piexif.dump(exif)

    maxImageDimension = [1280, 640, 360, 160]
    for imgDim in maxImageDimension:
    thumbRatio = imgDim / max(currWidth, currHeight)
    # note that because Python's round function is mathematically incorrect, I have to do the following workaround
    newWidth = int(Decimal(str(thumbRatio * currWidth)).quantize(Decimal('0.'), rounding=ROUND_UP))
    newHeight = int(Decimal(str(thumbRatio * currHeight)).quantize(Decimal('0.'), rounding=ROUND_UP))
    # copy currImage object
    newImage = currImage
    # note that I have to do resize method because thumbnail method has same rounding problem
    newImage = newImage.resize((newWidth, newHeight))
    # save the thumbnail
    if imgDim == 1280:
    outFileName = destinationDir + '\' + file[:len(file)-4] + '.jpg'
    else:
    outFileName = destinationDir + '\' + file[:len(file)-4] + '-' + str(newWidth) + 'x' + str(newHeight) + '.jpg'
    print('Writing: ' + outFileName)

    # Here is where I have to choose between exif or exif_bytes when saving but I can only get one or the other desired result
    newImage.save(outFileName, exif=exif_bytes)

    print('n')

    currImage.close()
    newImage.close()


    Thanks in advance.










    share|improve this question

























      0












      0








      0








      I've read another thread on SO regarding image rotation here:
      PIL thumbnail is rotating my image?



      and I've read another thread on SO about EXIF preservation here:
      Preserve exif data of image with PIL when resize(create thumbnail)



      Unfortunately, after implementing the suggestions above, it seems that I can only have either:
      1) a saved rotated image without EXIF data
      or
      2) a non-rotated image with EXIF data
      but it seems that I can't have both.



      I'm hoping I can get some help to fix what I thought was a real simple problem, but has been turning into a scream-fest against my computer for the past few hours.



      Here's the relevant parts of my code:



      from PIL import Image, ExifTags
      import piexif
      currImage = Image.open(inFileName)
      exif_dict = piexif.load(currImage.info["exif"])

      for orientation in ExifTags.TAGS.keys():
      if ExifTags.TAGS[orientation]=='Orientation':
      break
      exif=dict(currImage._getexif().items())

      if exif[orientation] == 3:
      currImage=currImage.rotate(180, expand=True)
      elif exif[orientation] == 6:
      currImage=currImage.rotate(270, expand=True)
      elif exif[orientation] == 8:
      currImage=currImage.rotate(90, expand=True)

      currWidth, currHeight = currImage.size

      # Here is where I can only do one or the other. Don't know enough about how to get both
      exif_bytes = piexif.dump(exif_dict)
      #exif_bytes = piexif.dump(exif)

      maxImageDimension = [1280, 640, 360, 160]
      for imgDim in maxImageDimension:
      thumbRatio = imgDim / max(currWidth, currHeight)
      # note that because Python's round function is mathematically incorrect, I have to do the following workaround
      newWidth = int(Decimal(str(thumbRatio * currWidth)).quantize(Decimal('0.'), rounding=ROUND_UP))
      newHeight = int(Decimal(str(thumbRatio * currHeight)).quantize(Decimal('0.'), rounding=ROUND_UP))
      # copy currImage object
      newImage = currImage
      # note that I have to do resize method because thumbnail method has same rounding problem
      newImage = newImage.resize((newWidth, newHeight))
      # save the thumbnail
      if imgDim == 1280:
      outFileName = destinationDir + '\' + file[:len(file)-4] + '.jpg'
      else:
      outFileName = destinationDir + '\' + file[:len(file)-4] + '-' + str(newWidth) + 'x' + str(newHeight) + '.jpg'
      print('Writing: ' + outFileName)

      # Here is where I have to choose between exif or exif_bytes when saving but I can only get one or the other desired result
      newImage.save(outFileName, exif=exif_bytes)

      print('n')

      currImage.close()
      newImage.close()


      Thanks in advance.










      share|improve this question














      I've read another thread on SO regarding image rotation here:
      PIL thumbnail is rotating my image?



      and I've read another thread on SO about EXIF preservation here:
      Preserve exif data of image with PIL when resize(create thumbnail)



      Unfortunately, after implementing the suggestions above, it seems that I can only have either:
      1) a saved rotated image without EXIF data
      or
      2) a non-rotated image with EXIF data
      but it seems that I can't have both.



      I'm hoping I can get some help to fix what I thought was a real simple problem, but has been turning into a scream-fest against my computer for the past few hours.



      Here's the relevant parts of my code:



      from PIL import Image, ExifTags
      import piexif
      currImage = Image.open(inFileName)
      exif_dict = piexif.load(currImage.info["exif"])

      for orientation in ExifTags.TAGS.keys():
      if ExifTags.TAGS[orientation]=='Orientation':
      break
      exif=dict(currImage._getexif().items())

      if exif[orientation] == 3:
      currImage=currImage.rotate(180, expand=True)
      elif exif[orientation] == 6:
      currImage=currImage.rotate(270, expand=True)
      elif exif[orientation] == 8:
      currImage=currImage.rotate(90, expand=True)

      currWidth, currHeight = currImage.size

      # Here is where I can only do one or the other. Don't know enough about how to get both
      exif_bytes = piexif.dump(exif_dict)
      #exif_bytes = piexif.dump(exif)

      maxImageDimension = [1280, 640, 360, 160]
      for imgDim in maxImageDimension:
      thumbRatio = imgDim / max(currWidth, currHeight)
      # note that because Python's round function is mathematically incorrect, I have to do the following workaround
      newWidth = int(Decimal(str(thumbRatio * currWidth)).quantize(Decimal('0.'), rounding=ROUND_UP))
      newHeight = int(Decimal(str(thumbRatio * currHeight)).quantize(Decimal('0.'), rounding=ROUND_UP))
      # copy currImage object
      newImage = currImage
      # note that I have to do resize method because thumbnail method has same rounding problem
      newImage = newImage.resize((newWidth, newHeight))
      # save the thumbnail
      if imgDim == 1280:
      outFileName = destinationDir + '\' + file[:len(file)-4] + '.jpg'
      else:
      outFileName = destinationDir + '\' + file[:len(file)-4] + '-' + str(newWidth) + 'x' + str(newHeight) + '.jpg'
      print('Writing: ' + outFileName)

      # Here is where I have to choose between exif or exif_bytes when saving but I can only get one or the other desired result
      newImage.save(outFileName, exif=exif_bytes)

      print('n')

      currImage.close()
      newImage.close()


      Thanks in advance.







      python rotation resize python-imaging-library exif






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 21 '18 at 23:49









      Johnny ChengJohnny Cheng

      12




      12
























          0






          active

          oldest

          votes











          Your Answer






          StackExchange.ifUsing("editor", function () {
          StackExchange.using("externalEditor", function () {
          StackExchange.using("snippets", function () {
          StackExchange.snippets.init();
          });
          });
          }, "code-snippets");

          StackExchange.ready(function() {
          var channelOptions = {
          tags: "".split(" "),
          id: "1"
          };
          initTagRenderer("".split(" "), "".split(" "), channelOptions);

          StackExchange.using("externalEditor", function() {
          // Have to fire editor after snippets, if snippets enabled
          if (StackExchange.settings.snippets.snippetsEnabled) {
          StackExchange.using("snippets", function() {
          createEditor();
          });
          }
          else {
          createEditor();
          }
          });

          function createEditor() {
          StackExchange.prepareEditor({
          heartbeatType: 'answer',
          autoActivateHeartbeat: false,
          convertImagesToLinks: true,
          noModals: true,
          showLowRepImageUploadWarning: true,
          reputationToPostImages: 10,
          bindNavPrevention: true,
          postfix: "",
          imageUploader: {
          brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
          contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
          allowUrls: true
          },
          onDemand: true,
          discardSelector: ".discard-answer"
          ,immediatelyShowMarkdownHelp:true
          });


          }
          });














          draft saved

          draft discarded


















          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53422044%2fpreserve-exif-after-image-resize-and-rotation-then-save-in-python%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown

























          0






          active

          oldest

          votes








          0






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes
















          draft saved

          draft discarded




















































          Thanks for contributing an answer to Stack Overflow!


          • Please be sure to answer the question. Provide details and share your research!

          But avoid



          • Asking for help, clarification, or responding to other answers.

          • Making statements based on opinion; back them up with references or personal experience.


          To learn more, see our tips on writing great answers.




          draft saved


          draft discarded














          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53422044%2fpreserve-exif-after-image-resize-and-rotation-then-save-in-python%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown





















































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown

































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown







          Popular posts from this blog

          404 Error Contact Form 7 ajax form submitting

          How to know if a Active Directory user can login interactively

          TypeError: fit_transform() missing 1 required positional argument: 'X'