import copy
from typing import Optional
import numpy as np
from ...helper import deprecate_by
[docs]class PlotMixin:
"""Provide helper functions for :class:`Document` to plot and visualize itself."""
def _ipython_display_(self):
"""Displays the object in IPython as a side effect"""
self.summary()
def __rich_console__(self, console, options):
yield f":page_facing_up: [b]Document[/b]: [cyan]{self.id}[cyan]"
from rich.table import Table
from rich import box
my_table = Table(
'Attribute', 'Value', width=80, box=box.ROUNDED, highlight=True
)
for f in self.non_empty_fields:
if f.startswith('_'):
continue
elif f in ('text', 'blob') and len(getattr(self, f)) > 100:
v = getattr(self, f)
my_table.add_row(f, str(v)[:100] + f'... [dim](length: {len(v)})')
elif f in ('embedding', 'tensor'):
from ...math.ndarray import to_numpy_array
v = to_numpy_array(getattr(self, f))
if v.squeeze().ndim == 1 and len(v) < 1000:
from .rich_embedding import ColorBoxEmbedding
v = ColorBoxEmbedding(v.squeeze())
else:
v = f'{type(getattr(self, f))} in shape {v.shape}, dtype: {v.dtype}'
my_table.add_row(f, v)
elif f not in ('id', 'chunks', 'matches'):
my_table.add_row(f, str(getattr(self, f)))
if my_table.rows:
yield my_table
[docs] def summary(self) -> None:
"""Print non-empty fields and nested structure of this Document object."""
from rich import print
print(self._plot_recursion())
def _plot_recursion(self, tree=None):
if tree is None:
from rich.tree import Tree
tree = Tree(self)
else:
tree = tree.add(self)
for a in ('matches', 'chunks'):
if getattr(self, a):
if a == 'chunks':
_icon = ':diamond_with_a_dot:'
else:
_icon = ':large_orange_diamond:'
_match_tree = tree.add(f'{_icon} [b]{a.capitalize()}[/b]')
for d in getattr(self, a):
d._plot_recursion(_match_tree)
return tree
[docs] def display(self):
"""Plot image data from :attr:`.tensor` or :attr:`.uri`."""
from IPython.display import Image, display
if self.uri:
if self.mime_type.startswith('audio') or self.uri.startswith('data:audio/'):
uri = _convert_display_uri(self.uri, self.mime_type)
_html5_audio_player(uri)
elif self.mime_type.startswith('video') or self.uri.startswith(
'data:video/'
):
uri = _convert_display_uri(self.uri, self.mime_type)
_html5_video_player(uri)
elif self.uri.startswith('data:image/'):
_html5_image(self.uri)
else:
display(Image(self.uri))
elif self.tensor is not None:
try:
import PIL.Image
p = PIL.Image.fromarray(self.tensor)
if p.mode != 'RGB':
raise
display(p)
except:
import matplotlib.pyplot as plt
plt.matshow(self.tensor)
else:
self.summary()
[docs] def plot_matches_sprites(
self,
top_k: int = 10,
channel_axis: int = -1,
inv_normalize: bool = False,
skip_empty: bool = False,
canvas_size: int = 1920,
min_size: int = 100,
output: Optional[str] = None,
):
"""Generate a sprite image for the query and its matching images in this Document object.
An image sprite is a collection of images put into a single image. Query image is on the left
followed by matching images. The Document object should contain matches.
:param top_k: the number of top matching documents to show in the sprite.
:param channel_axis: the axis id of the color channel, ``-1`` indicates the color channel info at the last axis
:param inv_normalize: If set to True, inverse the normalization of a float32 image :attr:`.tensor` into a uint8
image :attr:`.tensor` inplace.
:param skip_empty: skip matches which has no .uri or .tensor.
:param canvas_size: the width of the canvas
:param min_size: the minimum size of the image
:param output: Optional path to store the visualization. If not given, show in UI
"""
if not self or not self.matches:
raise ValueError(f'{self!r} is empty or has no matches')
if not self.uri and self.tensor is None:
raise ValueError(
f'Document has neither `uri` nor `tensor`, cannot be plotted'
)
if top_k <= 0:
raise ValueError(f'`limit` must be larger than 0, receiving {top_k}')
import matplotlib.pyplot as plt
img_per_row = top_k + 2
if top_k > len(self.matches):
img_per_row = len(self.matches) + 2
img_size = int((canvas_size - 50) / img_per_row)
if img_size < min_size:
# image is too small, recompute the image size and canvas size
img_size = min_size
canvas_size = img_per_row * img_size + 50
try:
_d = copy.deepcopy(self)
if _d.content_type != 'tensor':
_d.load_uri_to_image_tensor() # the channel axis is -1
if inv_normalize:
# inverse normalise to uint8 and set the channel axis to -1
_d.set_image_tensor_inv_normalization(channel_axis)
_d.set_image_tensor_channel_axis(channel_axis, -1)
# Maintain the aspect ratio keeping the width fixed
h, w, _ = _d.tensor.shape
img_h, img_w = int(h * (img_size / float(w))), img_size
sprite_img = np.ones([img_h + 20, canvas_size, 3], dtype='uint8')
_d.set_image_tensor_shape(shape=(img_h, img_w))
sprite_img[10 : img_h + 10, 10 : 10 + img_w] = _d.tensor
pos = canvas_size // img_per_row
for col_id, d in enumerate(self.matches, start=2):
if not d.uri and d.tensor is None:
if skip_empty:
continue
else:
raise ValueError(
f'Document match has neither `uri` nor `tensor`, cannot be plotted'
)
_d = copy.deepcopy(d)
if _d.content_type != 'tensor':
_d.load_uri_to_image_tensor()
if inv_normalize:
_d.set_image_tensor_inv_normalization(channel_axis=channel_axis)
_d.set_image_tensor_channel_axis(
channel_axis, -1
).set_image_tensor_shape(shape=(img_h, img_w))
# paste it on the main canvas
sprite_img[
10 : img_h + 10,
(col_id * pos) : ((col_id * pos) + img_w),
] = _d.tensor
col_id += 1
if col_id >= img_per_row:
break
except Exception as ex:
raise ValueError('Bad image tensor. Try different `channel_axis`') from ex
from PIL import Image
im = Image.fromarray(sprite_img)
if output:
with open(output, 'wb') as fp:
im.save(fp)
else:
plt.figure(figsize=(img_per_row, 2))
plt.gca().set_axis_off()
plt.subplots_adjust(top=1, bottom=0, right=1, left=0, hspace=0, wspace=0)
plt.margins(0, 0)
plt.gca().xaxis.set_major_locator(plt.NullLocator())
plt.gca().yaxis.set_major_locator(plt.NullLocator())
plt.imshow(im, interpolation="none")
plt.show()
def _convert_display_uri(uri, mime_type):
import urllib
from .helper import _to_datauri, _uri_to_blob
scheme = urllib.parse.urlparse(uri).scheme
if scheme not in ['data', 'http', 'https']:
blob = _uri_to_blob(uri)
return _to_datauri(mime_type, blob)
return uri
def _html5_image(uri):
from IPython.display import display
from IPython.core.display import HTML # noqa
src = f'''
<body>
<image src="{uri}" height="200px">
</body>
'''
display(HTML(src)) # noqa
def _html5_video_player(uri):
from IPython.display import display
from IPython.core.display import HTML # noqa
src = f'''
<body>
<video width="320" height="240" autoplay muted controls>
<source src="{uri}">
Your browser does not support the video tag.
</video>
</body>
'''
display(HTML(src)) # noqa
def _html5_audio_player(uri):
from IPython.display import display
from IPython.core.display import HTML # noqa
src = f'''
<body>
<audio controls="controls" style="width:320px" >
<source src="{uri}"/>
Your browser does not support the audio element.
</audio>
</body>
'''
display(HTML(src)) # noqa
