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Update val_batch*.jpg for Chinese fonts (ultralytics#6526)
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* Update plots for Chinese fonts

* make is_chinese() non-str safe

* Add global FONT

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

* Update general.py

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
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glenn-jocher and pre-commit-ci[bot] committed Feb 3, 2022
1 parent 586e50f commit 18bf71b
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71 changes: 42 additions & 29 deletions utils/general.py
View file
Original file line number Diff line number Diff line change
Expand Up @@ -37,6 +37,7 @@
ROOT = FILE.parents[1] # YOLOv5 root directory
NUM_THREADS = min(8, max(1, os.cpu_count() - 1)) # number of YOLOv5 multiprocessing threads
VERBOSE = str(os.getenv('YOLOv5_VERBOSE', True)).lower() == 'true' # global verbose mode
FONT = 'Arial.ttf' # https://ultralytics.com/assets/Arial.ttf

torch.set_printoptions(linewidth=320, precision=5, profile='long')
np.set_printoptions(linewidth=320, formatter={'float_kind': '{:11.5g}'.format}) # format short g, %precision=5
Expand All @@ -55,6 +56,21 @@ def is_kaggle():
return False


def is_writeable(dir, test=False):
# Return True if directory has write permissions, test opening a file with write permissions if test=True
if test: # method 1
file = Path(dir) / 'tmp.txt'
try:
with open(file, 'w'): # open file with write permissions
pass
file.unlink() # remove file
return True
except OSError:
return False
else: # method 2
return os.access(dir, os.R_OK) # possible issues on Windows


def set_logging(name=None, verbose=VERBOSE):
# Sets level and returns logger
if is_kaggle():
Expand All @@ -68,6 +84,22 @@ def set_logging(name=None, verbose=VERBOSE):
LOGGER = set_logging('yolov5') # define globally (used in train.py, val.py, detect.py, etc.)


def user_config_dir(dir='Ultralytics', env_var='YOLOV5_CONFIG_DIR'):
# Return path of user configuration directory. Prefer environment variable if exists. Make dir if required.
env = os.getenv(env_var)
if env:
path = Path(env) # use environment variable
else:
cfg = {'Windows': 'AppData/Roaming', 'Linux': '.config', 'Darwin': 'Library/Application Support'} # 3 OS dirs
path = Path.home() / cfg.get(platform.system(), '') # OS-specific config dir
path = (path if is_writeable(path) else Path('/tmp')) / dir # GCP and AWS lambda fix, only /tmp is writeable
path.mkdir(exist_ok=True) # make if required
return path


CONFIG_DIR = user_config_dir() # Ultralytics settings dir


class Profile(contextlib.ContextDecorator):
# Usage: @Profile() decorator or 'with Profile():' context manager
def __enter__(self):
Expand Down Expand Up @@ -152,34 +184,6 @@ def get_latest_run(search_dir='.'):
return max(last_list, key=os.path.getctime) if last_list else ''


def user_config_dir(dir='Ultralytics', env_var='YOLOV5_CONFIG_DIR'):
# Return path of user configuration directory. Prefer environment variable if exists. Make dir if required.
env = os.getenv(env_var)
if env:
path = Path(env) # use environment variable
else:
cfg = {'Windows': 'AppData/Roaming', 'Linux': '.config', 'Darwin': 'Library/Application Support'} # 3 OS dirs
path = Path.home() / cfg.get(platform.system(), '') # OS-specific config dir
path = (path if is_writeable(path) else Path('/tmp')) / dir # GCP and AWS lambda fix, only /tmp is writeable
path.mkdir(exist_ok=True) # make if required
return path


def is_writeable(dir, test=False):
# Return True if directory has write permissions, test opening a file with write permissions if test=True
if test: # method 1
file = Path(dir) / 'tmp.txt'
try:
with open(file, 'w'): # open file with write permissions
pass
file.unlink() # remove file
return True
except OSError:
return False
else: # method 2
return os.access(dir, os.R_OK) # possible issues on Windows


def is_docker():
# Is environment a Docker container?
return Path('/workspace').exists() # or Path('/.dockerenv').exists()
Expand Down Expand Up @@ -207,7 +211,7 @@ def is_ascii(s=''):

def is_chinese(s='人工智能'):
# Is string composed of any Chinese characters?
return re.search('[\u4e00-\u9fff]', s)
return True if re.search('[\u4e00-\u9fff]', str(s)) else False


def emojis(str=''):
Expand Down Expand Up @@ -378,6 +382,15 @@ def check_file(file, suffix=''):
return files[0] # return file


def check_font(font=FONT):
# Download font to CONFIG_DIR if necessary
font = Path(font)
if not font.exists() and not (CONFIG_DIR / font.name).exists():
url = "https://ultralytics.com/assets/" + font.name
LOGGER.info(f'Downloading {url} to {CONFIG_DIR / font.name}...')
torch.hub.download_url_to_file(url, str(font), progress=False)


def check_dataset(data, autodownload=True):
# Download and/or unzip dataset if not found locally
# Usage: https://github.com/ultralytics/yolov5/releases/download/v1.0/coco128_with_yaml.zip
Expand Down
23 changes: 10 additions & 13 deletions utils/plots.py
View file
Original file line number Diff line number Diff line change
Expand Up @@ -17,12 +17,11 @@
import torch
from PIL import Image, ImageDraw, ImageFont

from utils.general import (LOGGER, Timeout, check_requirements, clip_coords, increment_path, is_ascii, is_chinese,
try_except, user_config_dir, xywh2xyxy, xyxy2xywh)
from utils.general import (CONFIG_DIR, FONT, LOGGER, Timeout, check_font, check_requirements, clip_coords,
increment_path, is_ascii, is_chinese, try_except, xywh2xyxy, xyxy2xywh)
from utils.metrics import fitness

# Settings
CONFIG_DIR = user_config_dir() # Ultralytics settings dir
RANK = int(os.getenv('RANK', -1))
matplotlib.rc('font', **{'size': 11})
matplotlib.use('Agg') # for writing to files only
Expand All @@ -49,16 +48,14 @@ def hex2rgb(h): # rgb order (PIL)
colors = Colors() # create instance for 'from utils.plots import colors'


def check_font(font='Arial.ttf', size=10):
def check_pil_font(font=FONT, size=10):
# Return a PIL TrueType Font, downloading to CONFIG_DIR if necessary
font = Path(font)
font = font if font.exists() else (CONFIG_DIR / font.name)
try:
return ImageFont.truetype(str(font) if font.exists() else font.name, size)
except Exception as e: # download if missing
url = "https://ultralytics.com/assets/" + font.name
LOGGER.info(f'Downloading {url} to {font}...')
torch.hub.download_url_to_file(url, str(font), progress=False)
check_font(font)
try:
return ImageFont.truetype(str(font), size)
except TypeError:
Expand All @@ -67,7 +64,7 @@ def check_font(font='Arial.ttf', size=10):

class Annotator:
if RANK in (-1, 0):
check_font() # download TTF if necessary
check_pil_font() # download TTF if necessary

# YOLOv5 Annotator for train/val mosaics and jpgs and detect/hub inference annotations
def __init__(self, im, line_width=None, font_size=None, font='Arial.ttf', pil=False, example='abc'):
Expand All @@ -76,8 +73,8 @@ def __init__(self, im, line_width=None, font_size=None, font='Arial.ttf', pil=Fa
if self.pil: # use PIL
self.im = im if isinstance(im, Image.Image) else Image.fromarray(im)
self.draw = ImageDraw.Draw(self.im)
self.font = check_font(font='Arial.Unicode.ttf' if is_chinese(example) else font,
size=font_size or max(round(sum(self.im.size) / 2 * 0.035), 12))
self.font = check_pil_font(font='Arial.Unicode.ttf' if is_chinese(example) else font,
size=font_size or max(round(sum(self.im.size) / 2 * 0.035), 12))
else: # use cv2
self.im = im
self.lw = line_width or max(round(sum(im.shape) / 2 * 0.003), 2) # line width
Expand All @@ -89,10 +86,10 @@ def box_label(self, box, label='', color=(128, 128, 128), txt_color=(255, 255, 2
if label:
w, h = self.font.getsize(label) # text width, height
outside = box[1] - h >= 0 # label fits outside box
self.draw.rectangle([box[0],
self.draw.rectangle((box[0],
box[1] - h if outside else box[1],
box[0] + w + 1,
box[1] + 1 if outside else box[1] + h + 1], fill=color)
box[1] + 1 if outside else box[1] + h + 1), fill=color)
# self.draw.text((box[0], box[1]), label, fill=txt_color, font=self.font, anchor='ls') # for PIL>8.0
self.draw.text((box[0], box[1] - h if outside else box[1]), label, fill=txt_color, font=self.font)
else: # cv2
Expand Down Expand Up @@ -210,7 +207,7 @@ def plot_images(images, targets, paths=None, fname='images.jpg', names=None, max

# Annotate
fs = int((h + w) * ns * 0.01) # font size
annotator = Annotator(mosaic, line_width=round(fs / 10), font_size=fs, pil=True)
annotator = Annotator(mosaic, line_width=round(fs / 10), font_size=fs, pil=True, example=names)
for i in range(i + 1):
x, y = int(w * (i // ns)), int(h * (i % ns)) # block origin
annotator.rectangle([x, y, x + w, y + h], None, (255, 255, 255), width=2) # borders
Expand Down

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