def get_created_date(im: Image) -> dt.datetime:
if im._getexif() and 36867 in im._getexif():
created_date = im._getexif()[36867]
else:
created_date = '1990:1:1 0:0:0'
created_date = created_date.strip()
photo_date = dt.datetime(1990, 1, 1)
try:
photo_date = dt.datetime.strptime(created_date, '%Y:%m:%d %H:%M:%S')
except Exception as ex:
logging.debug(ex)
return photo_date
def get_exif_orientation(image: Image) -> int:
"""Returns exif orientation (1-8) or 0 if no exif data"""
if hasattr(image, "_getexif"):
exif = image._getexif()
if exif is not None and EXIF_ORIENTATION in exif.keys():
return exif[EXIF_ORIENTATION]
return 0
def _check_rotation_exif(image: Image) -> Image:
"""
Checks the rotational exif data on a given image and rotates it
accordingly.
:param image:
:return:
Rotated image.
:rtype:
PIL.Image
"""
for orientation in ExifTags.TAGS.keys():
if ExifTags.TAGS[orientation] == 'Orientation':
try:
exif = dict(image._getexif().items())
val = exif[orientation]
except (AttributeError, KeyError):
return image
if val == 3:
image = image.rotate(180, expand=True)
elif val == 6:
image = image.rotate(270, expand=True)
elif val == 8:
image = image.rotate(90, expand=True)
return image
return image
def image_transpose_exif(im: Image):
"""
Apply Image.transpose to ensure 0th row of pixels is at the visual
top of the image, and 0th column is the visual left-hand side.
Return the original image if unable to determine the orientation.
As per CIPA DC-008-2012, the orientation field contains an integer,
1 through 8. Other values are reserved.
Parameters
----------
im: PIL.Image
The image to be rotated.
"""
exif_orientation_tag = 0x0112
exif_transpose_sequences = [ # Val 0th row 0th col
[], # 0 (reserved)
[], # 1 top left
[Image.FLIP_LEFT_RIGHT], # 2 top right
[Image.ROTATE_180], # 3 bottom right
[Image.FLIP_TOP_BOTTOM], # 4 bottom left
[Image.FLIP_LEFT_RIGHT, Image.ROTATE_90], # 5 left top
[Image.ROTATE_270], # 6 right top
[Image.FLIP_TOP_BOTTOM, Image.ROTATE_90], # 7 right bottom
[Image.ROTATE_90], # 8 left bottom
]
try:
seq = exif_transpose_sequences[im._getexif()[exif_orientation_tag] # pylint: disable=protected-access
]
except Exception:
return im
else:
return functools.reduce(type(im).transpose, seq, im)
def check_metadata(image_file: Image):
"""
For decreasing image size better to delete unnecessary metadata
:param image_file: JpegImageFile, WebPImageFile
"""
exif = image_file._getexif()
assert_that(exif, equal_to(None),
'EXIF (metadata) must be empty for a smaller image file size')
def get_exif(img: Image) -> tp.Dict[str, str]:
info = img._getexif()
exif_obj = {}
if info is not None:
for tag, value in info.items():
decoded = ExifTags.TAGS.get(tag, tag)
exif_obj[decoded] = value
return exif_obj
def rotate_image(image: Image) -> Image:
ALLOCATION={3: 180,
6: -90,
8: 90} #{orientation value : rotation angle}
exif=image._getexif()
# print(f"exif={exif}")
if exif != None and 274 in exif:
if exif[274] in ALLOCATION:
return image.rotate(ALLOCATION[exif[274]], expand=True)
else: return image
else: return image
def rotate_img(img: Image) -> Image:
try:
#exif情報取得
exifinfo = img._getexif()
#exif情報からOrientationの取得
orientation = exifinfo.get(0x112, 1)
#画像を回転
img = rotateImage(img, orientation)
except:
pass
return img
def generate_exif_dict(image: Image, close: bool = True) -> Dict:
"""
Generate a dictionary of dictionaries.
The outer dictionary keys are the names
of individual items, eg Make, Model etc.
The outer dictionary values are themselves
dictionaries with the following keys:
tag: the numeric code for the item names
raw: the data as stored in the image, often
in a non-human-readable format
processed: the raw data if it is human-readable,
or a processed version if not.
"""
try:
exif_data_PIL = image._getexif()
exif_data = {}
for k, v in PIL.ExifTags.TAGS.items():
try:
if k in exif_data_PIL:
value = exif_data_PIL[k]
else:
value = None
except TypeError:
raise Exception(f"{image.filename}: invalid exif_data.")
if len(str(value)) > 64:
value = str(value)[:65] + "..."
exif_data[v] = {
"tag": k,
"raw": value,
"processed": value,
}
if close:
image.close()
exif_data = _process_exif_dict(exif_data)
return exif_data
except IOError as ioe:
raise
def _get_creation_time(path: Path, img: Image) -> Optional[datetime]:
if hasattr(img, '_getexif'):
exif = img._getexif()
if exif and _EXIF.CREATION_DATE in exif:
creation_date_str = exif[_EXIF.CREATION_DATE]
try:
return datetime.strptime(creation_date_str,
'%Y:%m:%d %H:%M:%S')
except ValueError:
logger.error('Error parsing creation date "{}" of image {}'
.format(creation_date_str, path), exc_info=True)
return None
return None
def get_metadata(image: Image) -> dict:
exif_tags = TAGS.items()
exif = image._getexif()
metadata = {}
if not exif:
return metadata
for k, v in exif_tags:
if k in exif:
metadata[v] = str(exif[k])
return metadata
def exif_rotate(image: Image) -> Image:
if hasattr(image, '_getexif') is False:
return image
exif_dict = dict(image._getexif().items())
orientation = exif_dict.get(name_to_tag_num['Orientation'])
if orientation == 3:
return image.rotate(180, expand=True)
elif orientation == 6:
return image.rotate(270, expand=True)
elif orientation == 8:
return image.rotate(90, expand=True)
return image
def _rotate_exif_orientation(self, img: Image) -> Image:
"""Rotate the image according to metadata in the payload.
Some cameras do not rotate the image, they just add orientation
metadata to the file, so we rotate it here.
"""
if not hasattr(img, '_getexif'):
return img # PIL.PngImagePlugin.PngImageFile apparently lacks EXIF
tags = img._getexif()
if tags is None:
return img
orientation = tags.get(self.EXIF_TAGS['Orientation'])
if orientation is None:
return img
degrees = self.EXIF_ROTATION_FIX.get(orientation)
return img.rotate(degrees) if degrees else img
def get_exif(image: Image):
_exif = {}
info = image._getexif()
for tag, value in info.items():
decoded = ExifTags.TAGS.get(tag, tag)
_exif[decoded] = value
return {
'ISOSpeedRatings': get_int(_exif, 'ISOSpeedRatings'),
'FocalLength': get_string(_exif, 'FocalLengthIn35mmFilm') if 'FocalLengthIn35mmFilm' in _exif
else parse_tuple(_exif, 'FocalLength'),
'FNumber': parse_tuple(_exif, 'FNumber'),
'ExposureTime': parse_tuple(_exif, 'ExposureTime', True),
'Make': get_string(_exif, 'Make'),
'Model': get_string(_exif, 'Model'),
'ExposureProgram': get_value(_exif, 'ExposureProgram', exposure_programs)
}
def rotate_image(im: Image) -> Image:
try:
orientation = -1
for orientation in ExifTags.TAGS.keys():
if ExifTags.TAGS[orientation] == 'Orientation': break
exif = dict(im._getexif().items())
if orientation in exif and exif[orientation] == 3:
im = im.rotate(180, expand=True)
elif orientation in exif and exif[orientation] == 6:
im = im.rotate(270, expand=True)
elif orientation in exif and exif[orientation] == 8:
im = im.rotate(90, expand=True)
except Exception as ex:
logging.debug(ex)
return im
def exif_rotate(image: Image) -> Image:
if not hasattr(image, "_getexif"):
return image
exif_data = image._getexif()
if exif_data is None:
return image
exif_dict = dict(exif_data.items())
orientation = exif_dict.get(name_to_tag_num["Orientation"])
if orientation == 3:
return image.rotate(180, expand=True)
elif orientation == 6:
return image.rotate(270, expand=True)
elif orientation == 8:
return image.rotate(90, expand=True)
return image
def exif_rotate(image: Image) -> Image:
if not hasattr(image, '_getexif'):
return image
exif_data = image._getexif()
if exif_data is None: # nocoverage # don't have a test image for this case, but it happens
return image
exif_dict = dict(exif_data.items())
orientation = exif_dict.get(name_to_tag_num['Orientation'])
if orientation == 3:
return image.rotate(180, expand=True)
elif orientation == 6:
return image.rotate(270, expand=True)
elif orientation == 8:
return image.rotate(90, expand=True)
return image
def exif_rotate(image: Image) -> Image:
if not hasattr(image, '_getexif'):
return image
exif_data = image._getexif()
if exif_data is None:
return image
exif_dict = dict(exif_data.items())
orientation = exif_dict.get(name_to_tag_num['Orientation'])
if orientation == 3:
return image.rotate(180, expand=True)
elif orientation == 6:
return image.rotate(270, expand=True)
elif orientation == 8:
return image.rotate(90, expand=True)
return image
def rotate_upright(self, image: Image):
"""
Rotate a PIL image to upright depending on its current orientation according to EXIF data.
"""
try:
for orientation in ExifTags.TAGS.keys():
if ExifTags.TAGS[orientation] == "Orientation":
break
exif = dict(image._getexif().items())
orientation = exif[orientation]
if orientation == 3:
image = image.rotate(180, expand=True)
elif orientation == 6:
image = image.rotate(270, expand=True)
elif orientation == 8:
image = image.rotate(90, expand=True)
except (AttributeError, KeyError) as e:
pass
return image
def rotate_image(image: Image):
"""
画像ファイルをEXIF情報に合わせて回転
"""
if image is None:
raise ValueError
orientation = 1
exif_info = image._getexif()
if exif_info:
orientation = exif_info.get(0x112, 1)
ans = image
if orientation == 2:
# 左右反転
ans = image.transpose(Image.FLIP_LEFT_RIGHT)
elif orientation == 3:
# 180度回転
ans = image.transpose(Image.ROTATE_180)
elif orientation == 4:
# 上下反転
ans = image.transpose(Image.FLIP_TOP_BOTTOM)
elif orientation == 5:
# 左右反転して90度回転
ans = image.transpose(Image.FLIP_LEFT_RIGHT).transpose(
Image.ROTATE_90)
elif orientation == 6:
# 270度回転
ans = image.transpose(Image.ROTATE_270)
elif orientation == 7:
# 左右反転して270度回転
ans = image.transpose(Image.FLIP_LEFT_RIGHT).transpose(
Image.ROTATE_270)
elif orientation == 8:
# 90度回転
ans = image.transpose(Image.ROTATE_90)
return ans
def extract_exif(image: Image) -> dict:
"""
Args:
image:
Returns:
"""
try:
exif_data = image._getexif()
if exif_data is not None:
exif = {
ExifTags.TAGS[k]: decode_byte_exif(v)
for k, v in exif_data.items() if k in ExifTags.TAGS
}
else:
exif = {}
except (AttributeError, OSError):
# Not all file types (e.g. .gif) have exif information.
exif = {}
return exif
def orientation_correction(image: Image) -> Image:
"""
Depending on how camera was held some images might get messed up orientation
after thumbnail function resizes them. Full explanation and solution were
borrowed from
https://stackoverflow.com/questions/4228530/pil-thumbnail-is-rotating-my-image
:param image: Original image
:return: image
"""
# only present in JPEGs
if not hasattr(image, '_getexif'):
return image
# returns None if no EXIF data
e = image._getexif()
if e is None:
return image
# pick correct orientation code from ExifTags
orientation = None
for key in ExifTags.TAGS.keys():
if ExifTags.TAGS[key] == 'Orientation':
orientation = key
break
# get orientation number
exif = dict(e.items())
orientation = exif.get(orientation, None)
if orientation == 3:
return image.transpose(Image.ROTATE_180)
if orientation == 6:
return image.transpose(Image.ROTATE_270)
if orientation == 8:
return image.transpose(Image.ROTATE_90)
return image
def get_creation_date(img: Image):
info = img._getexif()
for tag in info.keys():
if TAGS.get(tag, tag) == 'DateTimeOriginal':
return info[tag]
return None
def set_faux_dpi(image: Image, dpi: int) -> Image:
"""
Sets the image's DPI Exif metadata without actually changing the image
"""
print_exif(image)
image._getexif()
def print_exif(image: Image) -> None:
for (k, v) in image._getexif().items():
print('%s = %s' % (TAGS.get(k), v))
def get_exif(image: Image) -> dict:
image.verify()
return image._getexif()
