[BUG] `draw_labels` method cannot parse unicode characters

[rusmux]

Describe the problem

When using the draw_labels method to draw dataset labels, unicode symbols are parsed as ?.

Code to reproduce issue

import cv2
import fiftyone as fo
import numpy as np

cv2.imwrite("sample.png", np.full((1024, 1024, 3), 255))

sample = fo.Sample(
    filepath="sample.png",
    detections=fo.Detections(detections=[fo.Detection(label="Объект", bounding_box=[0.4, 0.4, 0.2, 0.2])]),
)

dataset = fo.Dataset()
dataset.add_sample(sample)
dataset.draw_labels("sample")

System information

• OS Platform and Distribution (e.g., Linux Ubuntu 22.04): macOS Sonoma
• Python version (python --version): 3.10.12
• FiftyOne version (fiftyone --version): FiftyOne v0.22.3, Voxel51, Inc.
• FiftyOne installed from (pip or source): pip

Other info/logs

Willingness to contribute

• Yes. I can contribute a fix for this bug independently
• Yes. I would be willing to contribute a fix for this bug with guidance
  from the FiftyOne community
• No. I cannot contribute a bug fix at this time

[brimoor]

Hi @rusmux 👋

The issue is that the default font used is lato-regular.

You can manually specify a different font like this (works for me):

import cv2
import fiftyone as fo
import numpy as np

cv2.imwrite("/tmp/sample.png", np.full((1024, 1024, 3), 255))

sample = fo.Sample(
    filepath="/tmp/sample.png",
    detections=fo.Detections(detections=[fo.Detection(label="Объект", bounding_box=[0.4, 0.4, 0.2, 0.2])]),
)

dataset = fo.Dataset()
dataset.add_sample(sample)

dataset.draw_labels("/tmp/sample", font_path="Arial.ttf")

[brimoor]

update: you can just:

pip install --upgrade voxel51-eta

and then this will directly work without manually specifying a new font:

dataset.draw_labels("/tmp/sample")