TensorFlow-20160430

Cloud Vision API & TensorFlow勉強会の発表資料です。
TFRecordWriter / TFRecordReader による画像ファイルの読み込みについて。

Transcript

1. C-LIS CO., LTD.
2. C-LIS CO., LTD.  ༗ࢁ
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   "3*:"."ʣ C-LIS CO., LTD. AndroidΞϓϦ։ൃऀ ػցֶशॳ৺ऀ ΍ͬͯ·ͤΜ Photo : Koji MORIGUCHI (AUN CREATIVE FIRM)
3. 5FOTPS'MPXͰ
 झຯͷը૾ऩूαʔόʔΛ࡞Δ
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7. C-LIS CO., LTD. $*'"3
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8. C-LIS CO., LTD.  ̎Ϋϥε෼ྨ 1 0
9. C-LIS CO., LTD. ΍ͬͨ͜ͱ ूΊͨσʔλΛ$*'"3ͷϑΝΠϧܗࣜʹ߹ΘͤͯQBDLͯ͠
 αϯϓϧϓϩάϥϜʹ༩͑ͨ  Label Red Green Blue 1 0 Label Red Green Blue 1 Label Red Green Blue 2 :
10. C-LIS CO., LTD.  DJGBSQZ
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11. C-LIS CO., LTD. ݕূ݁Ռ ܇࿅σʔλ
    
    
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12. C-LIS CO., LTD. ՝୊ ֶशʢςετʣσʔλͷॆ࣮
 ؟ڸͰ͸ͳ͘ɺΩϟϥΫλʔΛݟ͍ͯΔՄೳੑ͕͋Δ
    ൑ఆਫ਼౓Λ্͛Δ
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13. C-LIS CO., LTD. ંΓ৞Έ૚Λ૿΍ͯ͠Έͨ
    ˍ
    ύϥϝʔλʔΛௐ੔ # conv0
 with tf.variable_scope('conv0') as scope:
 kernel = _variable_with_weight_decay('weights', shape=[32, 32, 3, 32],
 stddev=1e-4, wd=0.0)
 conv = tf.nn.conv2d(images, kernel, [1, 1, 1, 1], padding='SAME')
 biases = _variable_on_cpu('biases', [32], tf.constant_initializer(0.0))
 bias = tf.nn.bias_add(conv, biases)
 conv0 = tf.nn.relu(bias, name=scope.name)
 _activation_summary(conv0)
 
 # pool0
 pool0 = tf.nn.max_pool(conv0, ksize=[1, 3, 3, 1], strides=[1, 2, 2, 1],
 padding='SAME', name='pool0')
 # norm0
 norm0 = tf.nn.lrn(pool0, 4, bias=1.0, alpha=0.001 / 9.0, beta=0.75,
 name='norm0')
 
 # conv1
 with tf.variable_scope('conv1') as scope:
 kernel = _variable_with_weight_decay('weights', shape=[16, 16, 32, 64],
 stddev=1e-4, wd=0.0)
 conv = tf.nn.conv2d(norm0, kernel, [1, 1, 1, 1], padding='SAME')
 biases = _variable_on_cpu('biases', [64], tf.constant_initializer(0.0))
 bias = tf.nn.bias_add(conv, biases)
 conv1 = tf.nn.relu(bias, name=scope.name)
 _activation_summary(conv1)
14. C-LIS CO., LTD. ݕূσʔλͷ෼ྨΛखͰߦ͏ ҰຕֆͷΩϟϥΫλʔʹݶఆ͢Δ
 ʢෳ਺ຕଘࡏ͠ʹ͍͘ֆΛબఆʣ  D
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15. C-LIS CO., LTD. ΅͔͠
    Ψ΢γΞϯϊΠζ
    ΠϯύϧεϊΠζ ܇࿅σʔλը૾ʹϊΠζΛՃ͑ͯ૿ྔ 
16. C-LIS CO., LTD. ܇࿅σʔλը૾ʹϊΠζΛՃ͑ͯ૿ྔ 
17. C-LIS CO., LTD. ݕূʢ৽Ϟσϧʴ৽σʔληοτʣ ܇࿅σʔλ
    
     
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18. C-LIS CO., LTD. 5SBJOJOHʢ৽Ϟσϧʴ৽σʔληοτʣ
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19. C-LIS CO., LTD. ݕূʢچϞσϧʴ৽σʔληοτʣ ܇࿅σʔλ
    
     
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20. C-LIS CO., LTD. ՝୊ ֶशʢςετʣσʔλʹదԠ͢ΔϑΟϧλʔͷ
 छྨͱڧ౓Λݕ౼
    ൑ఆਫ਼౓Λ্͛Δɹˠɹ$*'"3ͷσʔλͰ֬ೝ
 ʢάϥϑͷਂ૚Խʗύϥϝʔλʔௐ੔ʗޡ൑ఆύλʔϯΛׂΓग़͢ʣ 
21. 5FOTPS'MPXͰ
    ը૾ϑΝΠϧΛಡΈࠐΉ
22. C-LIS CO., LTD. $*'"3ܗࣜͷ໰୊ αΠζ͕େ͖͍ʢ࣮࣭#JUNBQʣ
    σʔλͷ௥Ճ΍Ұ෦࡟আ͕೉͍͠  Label Red Green Blue 1 0 Label Red Green Blue 1 Label Red Green Blue 2 :
23. ը૾ϑΝΠϧΛ௚઀ಡΈࠐΉ
24. C-LIS CO., LTD. ݱࡏͷݩը૾ +1&(
    PS
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    ը૾ͷαΠζ͸όϥόϥʢਖ਼ํܗʣ
    ಉ͡αΠζʹ౷Ұ͢Δ
    ϑΟϧλʔͷద༻ 
25. C-LIS CO., LTD. ը૾ΛಡΜͰʮදࣔʯ͢Δ  def load_png_images(label, filename_queue, size=96, depth=3):
 reader = tf.WholeFileReader()
 key, value = reader.read(filename_queue)
 
 result = ImageData()
 result.label = label
 
 decoded_png = tf.image.decode_png(value)
 decoded_png = tf.image.resize_images(decoded_png, size, size)
 
 result.image = decoded_png
 result.width = size
 result.height = size
 result.depth = depth
 
 return result
26. C-LIS CO., LTD. ը૾ΛಡΜͰʮදࣔʯ͢Δ  def _read_image(label, path_list):
 filename_queue = tf.train.string_input_producer(path_list)
 image_result = megane_input.load_png_images(label, filename_queue)
 
 # ը૾Լॲཧ
 # image_result.distort()
 
 return image_result

27. C-LIS CO., LTD. ը૾ΛϥϯμϜͰՃ޻͢Δ  def distort(self, max_delta=60, contrast_lower=0.2, contrast_upper=2.8):
 # ͘Γൈ͖Λ͢ΔྖҬΛܭࢉ
 self.height = int(self.height * 0.8)
 self.width = int(self.width * 0.8)
 
 distorted_image = tf.cast(self.image, tf.float32)
 distorted_image = tf.random_crop(distorted_image, [self.height, self.width, self.depth])
 distorted_image = tf.image.random_flip_left_right(distorted_image)
 distorted_image = tf.image.random_brightness(distorted_image, max_delta=max_delta)
 distorted_image = tf.image.random_contrast(distorted_image, lower=contrast_lower, upper=contrast_upper)
 
 self.image = distorted_image
 
 # ແޮԽ͓ͯ͘͠
 # self.image = tf.image.per_image_whitening(self.image)

28. C-LIS CO., LTD. ը૾ΛಡΜͰʮදࣔʯ͢Δ  def _show_images(target_dir):
 files = gfile.ListDirectory(target_dir, False)
 files = filter(lambda file: file.endswith('.png'), files)
 path_list = list(map(lambda file: target_dir + file, files))
 
 image = _read_image(-1, path_list)
 
 init_op = tf.initialize_all_variables()
 with tf.Session() as sess:
 sess.run(init_op)
 
 coord = tf.train.Coordinator()
 threads = tf.train.start_queue_runners(coord=coord)
 
 for i in range(len(path_list)):
 image_raw = image.image.eval()
 Image.fromarray(np.asarray(image_raw).astype(np.uint8)).show()
 
 coord.request_stop()
 coord.join(threads)
29. EFNP
30. C-LIS CO., LTD. େ͖ͳಾ͕ʜʜ  def _show_images(target_dir):
 files = gfile.ListDirectory(target_dir, False)
 files = filter(lambda file: file.endswith('.png'), files)
 path_list = list(map(lambda file: target_dir + file, files))
 
 image = _read_image(-1, path_list)
 
 init_op = tf.initialize_all_variables()
 with tf.Session() as sess:
 sess.run(init_op)
 
 coord = tf.train.Coordinator()
 threads = tf.train.start_queue_runners(coord=coord)
 
 for i in range(len(path_list)):
 image_raw = image.image.eval()
 Image.fromarray(np.asarray(image_raw).astype(np.uint8)).show()
 
 coord.request_stop()
 coord.join(threads)
31. ը૾ʹ෇͚Δʮϥϕϧʯ͸
    Ͳ͏΍ͬͯ؅ཧ͢Δʁ
32. C-LIS CO., LTD.  ϥϕϧ 1 0
33. C-LIS CO., LTD. $*'"3ܗࣜ  Label Red Green Blue 1 0 Label Red Green Blue 1 Label Red Green Blue 2 :
34. C-LIS CO., LTD. σʔλܗࣜ ݻఆ௕Ϩίʔυʢ$*'"3ʣ
    $47ܗࣜ
    5'3FDPSEܗࣜ  IUUQTXXXUFOTPSqPXPSHWFSTJPOTSIPX@UPTSFBEJOH@EBUB JOEFYIUNMSFBEJOHEBUB
35. C-LIS CO., LTD. 5'3FDPSEܗࣜ Α͏͢Δʹ1SPUPDPM
    #V⒎FSTͰ͢ 
36. C-LIS CO., LTD. 5'3FDPSEܗࣜͷॻ͖ग़͠ 5'3FDPSE8SJUFSΛ࢖͏
    ϓϩτίϧఆٛʢUGUSBJO&YBNQMFʣʹσʔλߏ଄Λ هड़͢Δ  IUUQTHJUIVCDPNUFOTPSqPXUFOTPSqPXCMPCSUFOTPSqPXFYBNQMFT IPX@UPTSFBEJOH@EBUBDPOWFSU@UP@SFDPSETQZ
37. C-LIS CO., LTD. 5'3FDPSEܗࣜͷॻ͖ग़͠  class ImageData: def save_tfrecord(self, base_filename):
 with tf.python_io.TFRecordWriter(base_filename + ".tfrecord") as writer:
 example = tf.train.Example(features=tf.train.Features(feature={
 'file_name': _bytes_feature(os.path.basename(self.filename).encode()),
 'label': _int64_feature(self.label),
 'image': _bytes_feature(self.image),
 'height': _int64_feature(self.height),
 'width': _int64_feature(self.width),
 'depth': _int64_feature(self.depth),
 }))
 writer.write(example.SerializeToString())

38. C-LIS CO., LTD. 5'3FDPSEܗࣜͷॻ͖ग़͠  def _convert_image_to_tfrecords(label, file):
 print("Processing... " + file)
 
 value = None
 width = -1
 height = -1
 
 with Image.open(file) as img:
 width = img.width
 height = img.height
 
 with open(file, "rb") as image:
 value = image.read()
 image.close()
 
 result = ImageData()
 result.filename = file
 result.label = label
 result.image = value
 result.height = height
 result.width = width
 result.depth = 3
 
 result.save_tfrecord(file)
39. C-LIS CO., LTD. 5'3FDPSEܗࣜͷಡΈࠐΈ 5'3FDPSE3FBEFSΛ࢖͏
    pMF@RVFVFΛ༩͑ΔͱɺEJDUܕͷσʔλ͕ಘΒΕΔ  IUUQTHJUIVCDPNUFOTPSqPXUFOTPSqPXCMPCSUFOTPSqPXFYBNQMFT IPX@UPTSFBEJOH@EBUBGVMMZ@DPOOFDUFE@SFBEFSQZ
40. C-LIS CO., LTD. 5'3FDPSEܗࣜͷಡΈࠐΈ  def _read_image_from_tfrecord(path_list):
 filename_queue = tf.train.string_input_producer(path_list)
 
 reader = tf.TFRecordReader()
 _, serialized_example = reader.read(filename_queue)
 
 features = tf.parse_single_example(
 serialized_example,
 features={
 'file_name': tf.FixedLenFeature([], tf.string),
 'label': tf.FixedLenFeature([], tf.int64),
 'image': tf.FixedLenFeature([], tf.string),
 'height': tf.FixedLenFeature([], tf.int64),
 'width': tf.FixedLenFeature([], tf.int64),
 'depth': tf.FixedLenFeature([], tf.int64),
 })
 
 image_data = ImageData()
 image_data.set_from_features(features)
 
 return image_data
41. C-LIS CO., LTD. 5'3FDPSEܗࣜͷಡΈࠐΈ  def set_from_features(self, features):
 self.filename = features['file_name']
 self.label = features['label']
 self.filename = tf.image.decode_png(features['image']) self.height = features['height']
 self.width = features['width']
 self.depth = features['depth']

42. C-LIS CO., LTD. 5'3FDPSEͷදࣔ  def _view_tfrecord(path):
 files = filter(lambda file: file.endswith('.tfrecord'), gfile.ListDirectory(path, False))
 path_list = list(map(lambda file: path + file, files))
 
 image_data = _read_image_from_tfrecord(path_list)
 
 init_op = tf.initialize_all_variables()
 
 with tf.Session() as sess:
 sess.run(init_op)
 
 coord = tf.train.Coordinator()
 threads = tf.train.start_queue_runners(sess=sess, coord=coord)
 
 try:
 for i in range(len(path_list)):
 image = image_data.image
 Image.fromarray(image).show()
 finally:
 coord.request_stop()
 coord.join(threads)
43. C-LIS CO., LTD. ಈ͖·ͤΜ  Traceback (most recent call last): File "/Users/keiji_ariyama/PycharmProjects/megane_co/src/megane_co/tfrecord_viewer.py", line 80, in <module> main(sys.argv) File "/Users/keiji_ariyama/PycharmProjects/megane_co/src/megane_co/tfrecord_viewer.py", line 76, in main _view_tfrecord(target_dir) File "/Users/keiji_ariyama/PycharmProjects/megane_co/src/megane_co/tfrecord_viewer.py", line 64, in _view_tfrecord Image.fromarray(image_data.image).show() File "/Users/keiji_ariyama/python_virtualenv/tensorflow/lib/python3.5/site-packages/PIL/ Image.py", line 2154, in fromarray arr = obj.__array_interface__ AttributeError: 'Tensor' object has no attribute '__array_interface__' Process finished with exit code 1
44. C-LIS CO., LTD. JNBHF@EBUBJNBHF
    ͷ಺༰Λදࣔ  Tensor("DecodePng:0", shape=(?, ?, ?), dtype=uint8)
45. C-LIS CO., LTD. FWBM ͢Δͱʜʜ  def _view_tfrecord(path):
 files = filter(lambda file: file.endswith('.tfrecord'), gfile.ListDirectory(path, False))
 path_list = list(map(lambda file: path + file, files))
 
 image_data = _read_image_from_tfrecord(path_list)
 
 init_op = tf.initialize_all_variables()
 
 with tf.Session() as sess:
 sess.run(init_op)
 
 coord = tf.train.Coordinator()
 threads = tf.train.start_queue_runners(sess=sess, coord=coord)
 
 try:
 for i in range(len(path_list)):
 image = image_data.image.eval()
 Image.fromarray(image).show()
 finally:
 coord.request_stop()
 coord.join(threads)
46. EFNP
47. C-LIS CO., LTD. ֤஋͕ਖ਼ৗʹಡΊ͍ͯΔ͔֬ೝ  class ImageData: def print(self):
 result = str(self.filename.eval())
 result += ' '
 result += str(self.label.eval())
 result += ' '
 result += str(self.height.eval())
 result += ' '
 result += str(self.width.eval())
 result += ' '
 result += str(self.depth.eval())
 
 print(result)

48. C-LIS CO., LTD. ֤஋͕ਖ਼ৗʹಡΊ͍ͯΔ͔֬ೝ  def _view_tfrecord(path):
 files = filter(lambda file: file.endswith('.tfrecord'), gfile.ListDirectory(path, False))
 files_full_path = list(map(lambda file: path + file, files))
 
 image_data = _read_image_from_tfrecord(files_full_path)
 
 init_op = tf.initialize_all_variables()
 
 with tf.Session() as sess:
 sess.run(init_op)
 
 coord = tf.train.Coordinator()
 threads = tf.train.start_queue_runners(sess=sess, coord=coord)
 
 try:
 for i in range(len(files_full_path)):
 image_data.print()
 image = image_data.image
 Image.fromarray(image).show()
 finally:
 coord.request_stop()
 coord.join(threads)

49. C-LIS CO., LTD. ໰୊ൃੜ  b'anzu_joy01_0.png' 1 368 650 3 b'anzu_joy01_0.png' 1 368 650 3 b'haruki_joy01_0.png' 1 650 368 3 b'anzu_joy01_0.png' 1 368 650 3 ຊདྷͱҧ͏஋͕දࣔ͞Ε͍ͯΔ
50. C-LIS CO., LTD. ௐࠪΛଓ͚Δͱʜʜ ϑΝΠϧҰͭͷͱ͖͸ਖ਼͍͠஋͕ݟ͍͑ͯΔ
    ඇಉظͷ໰୊ʁ
    
51. C-LIS CO., LTD. ͓͞Β͍ 5FOTPS'MPX͸ɺ4FTTJPOͷதͰॲཧʢ0QFSBUJPOʣΛ
 ϋϯυϦϯά͢Δ
    TFTTJPOSVO͢Δ·Ͱ͸ɺ͢΂ͯͷ஋͸࣮ମΛ࣋ͨͳ͍  Tensor("DecodePng:0", shape=(?, ?, ?), dtype=uint8) IUUQTXXXUFOTPSqPXPSHWFSTJPOTSHFU@TUBSUFECBTJD@VTBHFIUNM
52. C-LIS CO., LTD. ηογϣϯ  def _view_tfrecord(path):
 files = filter(lambda file: file.endswith('.tfrecord'), gfile.ListDirectory(path, False))
 files_full_path = list(map(lambda file: path + file, files))
 
 image_data = _read_image_from_tfrecord(files_full_path)
 
 init_op = tf.initialize_all_variables()
 
 with tf.Session() as sess:
 sess.run(init_op)
 
 coord = tf.train.Coordinator()
 threads = tf.train.start_queue_runners(sess=sess, coord=coord)
 
 try:
 for i in range(len(files_full_path)):
 image_data.print()
 image = image_data.image
 Image.fromarray(image).show()
 finally:
 coord.request_stop()
 coord.join(threads)

53. C-LIS CO., LTD. ΦϖϨʔγϣϯɾάϥϑ  … file4 file3 file2 file1 filename_queue TFRecordReader decode_png Tensor("DecodePng:0", shape=(?, ?, ?), dtype=uint8)
54. C-LIS CO., LTD. ΦϖϨʔγϣϯɾάϥϑ  … file4 file3 file2 file1 filename_queue TFRecordReader decode_png resize_image Tensor("Squeeze:0", shape=(96, 96, ?), dtype=float32)
55. C-LIS CO., LTD. file1 TFRecordReader decode_png resize_image file1 TFRecordReader decode_png resize_image ධՁʢ࣮ߦʣ  … file4 file3 file2 filename_queue resize_image resize_image .eval() or session.run( )
56. C-LIS CO., LTD. ηογϣϯ  def _view_tfrecord(path):
 files = filter(lambda file: file.endswith('.tfrecord'), gfile.ListDirectory(path, False))
 files_full_path = list(map(lambda file: path + file, files))
 
 image_data = _read_image_from_tfrecord(files_full_path)
 
 init_op = tf.initialize_all_variables()
 
 with tf.Session() as sess:
 sess.run(init_op)
 
 coord = tf.train.Coordinator()
 threads = tf.train.start_queue_runners(sess=sess, coord=coord)
 
 try:
 for i in range(len(files_full_path)):
 image = image_data.image.eval()
 Image.fromarray(image).show()
 finally:
 coord.request_stop()
 coord.join(threads)

57. C-LIS CO., LTD. .eval() or session.run( ) feature['file_name'] feature['file_name'] ̍౓໨ͷධՁʢ࣮ߦʣ  … file4 file3 file2 filename_queue file1 TFRecordReader feature['file_name']
58. C-LIS CO., LTD. feature['file_name'] feature['file_name'] file1 ̎౓໨ͷධՁʢ࣮ߦʣ  … file4 file3 file2 filename_queue TFRecordReader feature['file_name'] .eval() or session.run( ) file2
59. C-LIS CO., LTD. FWBM ͝ͱʹ2VFVF͕ਐΉ  def print(self):
 result = str(self.filename.eval())
 result += ' '
 result += str(self.label.eval())
 result += ' '
 result += str(self.height.eval())
 result += ' '
 result += str(self.width.eval())
 result += ' '
 result += str(self.depth.eval())
 
 print(result)

60. C-LIS CO., LTD. ͳͥؾͮ͘ͷ͕஗Εͨͷ͔ pMF@RVFVFΛ࡞੒͢ΔTUSJOH@JOQVU@QSPEVDFSؔ਺ͷ Ҿ਺TIV⒐Fͷॳظ஋͕5SVF  filename_queue = tf.train.string_input_producer(path_list, shuffle=True) IUUQTXXXUFOTPSqPXPSHWFSTJPOTSBQJ@EPDTQZUIPO JP@PQTIUNMTUSJOH@JOQVU@QSPEVDFS
61. Ͳ͏͢Ε͹͍͍͔
62. C-LIS CO., LTD. ॲཧ͸0QFSBUJPOʹด͡ࠐΊΔ  with tf.Session() as sess:
 sess.run(init_op)
 
 coord = tf.train.Coordinator()
 threads = tf.train.start_queue_runners(sess=sess, coord=coord)
 
 try:
 for i in range(len(files_full_path)):
 square = tf.mul(image_data.width, image_data.height)
 print(square.eval())
 
 finally:
 coord.request_stop()
 coord.join(threads) 135424 <- 368 * 368 422500 <- 650 * 650
63. C-LIS CO., LTD. mul mul file1 TFRecordReader feature['width'] mul ධՁʢ࣮ߦʣ  … file4 file3 file2 filename_queue .eval() or session.run( ) feature['height'] 422500
64. C-LIS CO., LTD. ͳͥॻ͖ग़͠͸໰୊ͳ͔ͬͨͷ͔ 5'3FDPSE8SJUFS͸TFTTJPOͷ؅ཧԼʹͳ͍
     def save_tfrecord(self, base_filename):
 with tf.python_io.TFRecordWriter(base_filename + ".tfrecord") as writer:
 example = tf.train.Example(features=tf.train.Features(feature={
 'file_name': _bytes_feature(os.path.basename(self.filename).encode()),
 'label': _int64_feature(self.label),
 'image': _bytes_feature(self.image),
 'height': _int64_feature(self.height),
 'width': _int64_feature(self.width),
 'depth': _int64_feature(self.depth),
 }))
 writer.write(example.SerializeToString())

65. C-LIS CO., LTD. 5'3FDPSE8SJUFSͱ3FBEFSͷҧ͍ʹ஫ҙ  def _read_image_from_tfrecord(path_list):
 filename_queue = tf.train.string_input_producer(path_list)
 
 reader = tf.TFRecordReader()
 _, serialized_example = reader.read(filename_queue)
 
 features = tf.parse_single_example(
 serialized_example,
 features={
 'file_name': tf.FixedLenFeature([], tf.string),
 'label': tf.FixedLenFeature([], tf.int64),
 'image': tf.FixedLenFeature([], tf.string),
 'height': tf.FixedLenFeature([], tf.int64),
 'width': tf.FixedLenFeature([], tf.int64),
 'depth': tf.FixedLenFeature([], tf.int64),
 })
 
 image_data = ImageData()
 image_data.set_from_features(features)
 
 return image_data
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