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fix: clarify py_modules usage in 1546 (#1597)
* fix: clarify py_modules usage in 1549
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!CustomCrafter1 | ||
metas: | ||
py_modules: custom_crafter.py # I also tried to add helper.py here |
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from jina.executors.crafters import BaseSegmenter | ||
from .helper import helper_function | ||
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class CustomCrafter1(BaseSegmenter): | ||
def __init__(self, *args, **kwargs): | ||
super().__init__(*args, **kwargs) | ||
print(helper_function) |
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def helper_function(): | ||
pass |
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from .helper import helper_function | ||
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from jina.executors.crafters import BaseSegmenter | ||
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class CustomCrafter2(BaseSegmenter): | ||
def __init__(self, *args, **kwargs): | ||
super().__init__(*args, **kwargs) | ||
print(helper_function) |
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!CustomCrafter2 | ||
metas: | ||
py_modules: | ||
- __init__.py | ||
- helper.py |
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def helper_function(): | ||
pass |
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!CustomCrafter3 | ||
metas: | ||
py_modules: | ||
- helper.py | ||
- custom_crafter.py |
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from jinahub.helper import helper_function | ||
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from jina.executors.crafters import BaseSegmenter | ||
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class CustomCrafter3(BaseSegmenter): | ||
def __init__(self, *args, **kwargs): | ||
super().__init__(*args, **kwargs) | ||
print(helper_function) |
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def helper_function(): | ||
pass |
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from .helper import helper_function | ||
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from jina.executors.crafters import BaseSegmenter | ||
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class CustomCrafter4(BaseSegmenter): | ||
def __init__(self, *args, **kwargs): | ||
super().__init__(*args, **kwargs) | ||
print(helper_function) |
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!CustomCrafter4 | ||
metas: | ||
py_modules: | ||
- helper.py | ||
- __init__.py |
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def helper_function(): | ||
pass |
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from typing import Tuple, Dict, List, Union | ||
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import numpy as np | ||
from jina.executors.crafters import BaseSegmenter | ||
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from .helper import _crop_image, _move_channel_axis, _load_image | ||
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class FiveImageCropper2(BaseSegmenter): | ||
""" | ||
:class:`FiveImageCropper` crops the image into four corners and the central crop. | ||
""" | ||
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def __init__(self, | ||
target_size: Union[Tuple[int, int], int] = 224, | ||
channel_axis: int = -1, | ||
*args, | ||
**kwargs): | ||
""" | ||
:param target_size: desired output size. If size is a sequence like (h, w), the output size will be matched to | ||
this. If size is an int, the output will have the same height and width as the `target_size`. | ||
""" | ||
super().__init__(*args, **kwargs) | ||
self.target_size = target_size | ||
self.channel_axis = channel_axis | ||
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def craft(self, blob: 'np.ndarray', *args, **kwargs) -> List[Dict]: | ||
""" | ||
Crop the input image array. | ||
:param blob: the ndarray of the image with the color channel at the last axis | ||
:return: a list of five chunk dicts with the cropped images | ||
""" | ||
raw_img = _load_image(blob, self.channel_axis) | ||
image_width, image_height = raw_img.size | ||
if isinstance(self.target_size, int): | ||
target_h = target_w = self.target_size | ||
elif isinstance(self.target_size, Tuple) and len(self.target_size) == 2: | ||
target_h, target_w = self.target_size | ||
else: | ||
raise ValueError(f'target_size should be an integer or a tuple of two integers: {self.target_size}') | ||
_tl, top_tl, left_tl = _crop_image(raw_img, self.target_size, 0, 0) | ||
tl = _move_channel_axis(np.asarray(_tl), -1, self.channel_axis) | ||
_tr, top_tr, left_tr = _crop_image(raw_img, self.target_size, top=0, left=image_width - target_w) | ||
tr = _move_channel_axis(np.asarray(_tr), -1, self.channel_axis) | ||
_bl, top_bl, left_bl = _crop_image(raw_img, self.target_size, top=image_height - target_h, left=0) | ||
bl = _move_channel_axis(np.asarray(_bl), -1, self.channel_axis) | ||
_br, top_br, left_br = _crop_image(raw_img, self.target_size, top=image_height - target_h, | ||
left=image_width - target_w) | ||
br = _move_channel_axis(np.asarray(_br), -1, self.channel_axis) | ||
_center, top_center, left_center = _crop_image(raw_img, self.target_size, how='center') | ||
center = _move_channel_axis(np.asarray(_center), -1, self.channel_axis) | ||
return [ | ||
dict(offset=0, weight=1., blob=tl.astype('float32'), location=(top_tl, left_tl)), | ||
dict(offset=0, weight=1., blob=tr.astype('float32'), location=(top_tr, left_tr)), | ||
dict(offset=0, weight=1., blob=bl.astype('float32'), location=(top_bl, left_bl)), | ||
dict(offset=0, weight=1., blob=br.astype('float32'), location=(top_br, left_br)), | ||
dict(offset=0, weight=1., blob=center.astype('float32'), location=(top_center, left_center)), | ||
] |
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!FiveImageCropper2 | ||
with: | ||
{} | ||
metas: | ||
py_modules: | ||
# - you can put more dependencies here | ||
- helper.py | ||
- __init__.py |
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__copyright__ = "Copyright (c) 2020 Jina AI Limited. All rights reserved." | ||
__license__ = "Apache-2.0" | ||
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from typing import Tuple, Union | ||
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import numpy as np | ||
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def _move_channel_axis(img: 'np.ndarray', channel_axis_to_move: int, target_channel_axis: int = -1) -> 'np.ndarray': | ||
""" | ||
Ensure the color channel axis is the default axis. | ||
""" | ||
if channel_axis_to_move == target_channel_axis: | ||
return img | ||
return np.moveaxis(img, channel_axis_to_move, target_channel_axis) | ||
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def _load_image(blob: 'np.ndarray', channel_axis: int): | ||
""" | ||
Load an image array and return a `PIL.Image` object. | ||
""" | ||
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from PIL import Image | ||
img = _move_channel_axis(blob, channel_axis) | ||
return Image.fromarray(img.astype('uint8')) | ||
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def _crop_image(img, target_size: Union[Tuple[int, int], int], top: int = None, left: int = None, how: str = 'precise'): | ||
""" | ||
Crop the input :py:mod:`PIL` image. | ||
:param img: :py:mod:`PIL.Image`, the image to be resized | ||
:param target_size: desired output size. If size is a sequence like | ||
(h, w), the output size will be matched to this. If size is an int, | ||
the output will have the same height and width as the `target_size`. | ||
:param top: the vertical coordinate of the top left corner of the crop box. | ||
:param left: the horizontal coordinate of the top left corner of the crop box. | ||
:param how: the way of cropping. Valid values include `center`, `random`, and, `precise`. Default is `precise`. | ||
- `center`: crop the center part of the image | ||
- `random`: crop a random part of the image | ||
- `precise`: crop the part of the image specified by the crop box with the given ``top`` and ``left``. | ||
.. warning:: When `precise` is used, ``top`` and ``left`` must be fed valid value. | ||
""" | ||
import PIL.Image as Image | ||
assert isinstance(img, Image.Image), 'img must be a PIL.Image' | ||
img_w, img_h = img.size | ||
if isinstance(target_size, int): | ||
target_h = target_w = target_size | ||
elif isinstance(target_size, Tuple) and len(target_size) == 2: | ||
target_h, target_w = target_size | ||
else: | ||
raise ValueError(f'target_size should be an integer or a tuple of two integers: {target_size}') | ||
w_beg = left | ||
h_beg = top | ||
if how == 'center': | ||
w_beg = int((img_w - target_w) / 2) | ||
h_beg = int((img_h - target_h) / 2) | ||
elif how == 'random': | ||
w_beg = np.random.randint(0, img_w - target_w + 1) | ||
h_beg = np.random.randint(0, img_h - target_h + 1) | ||
elif how == 'precise': | ||
assert (w_beg is not None and h_beg is not None) | ||
assert (0 <= w_beg <= (img_w - target_w)), f'left must be within [0, {img_w - target_w}]: {w_beg}' | ||
assert (0 <= h_beg <= (img_h - target_h)), f'top must be within [0, {img_h - target_h}]: {h_beg}' | ||
else: | ||
raise ValueError(f'unknown input how: {how}') | ||
if not isinstance(w_beg, int): | ||
raise ValueError(f'left must be int number between 0 and {img_w}: {left}') | ||
if not isinstance(h_beg, int): | ||
raise ValueError(f'top must be int number between 0 and {img_h}: {top}') | ||
w_end = w_beg + target_w | ||
h_end = h_beg + target_h | ||
img = img.crop((w_beg, h_beg, w_end, h_end)) | ||
return img, h_beg, w_beg | ||
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def _resize_short(img, target_size: Union[Tuple[int, int], int], how: str = 'LANCZOS'): | ||
""" | ||
Resize the input :py:mod:`PIL` image. | ||
:param img: :py:mod:`PIL.Image`, the image to be resized | ||
:param target_size: desired output size. If size is a sequence like (h, w), the output size will be matched to | ||
this. If size is an int, the smaller edge of the image will be matched to this number maintain the aspect | ||
ratio. | ||
:param how: the interpolation method. Valid values include `NEAREST`, `BILINEAR`, `BICUBIC`, and `LANCZOS`. | ||
Default is `LANCZOS`. Please refer to `PIL.Image` for detaisl. | ||
""" | ||
import PIL.Image as Image | ||
assert isinstance(img, Image.Image), 'img must be a PIL.Image' | ||
if isinstance(target_size, int): | ||
percent = float(target_size) / min(img.size[0], img.size[1]) | ||
target_w = int(round(img.size[0] * percent)) | ||
target_h = int(round(img.size[1] * percent)) | ||
elif isinstance(target_size, Tuple) and len(target_size) == 2: | ||
target_h, target_w = target_size | ||
else: | ||
raise ValueError(f'target_size should be an integer or a tuple of two integers: {target_size}') | ||
img = img.resize((target_w, target_h), getattr(Image, how)) | ||
return img |
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