labelme版本更换为3.11.2
"D:\Anaconda3\Lib\site-packages\labelme\utils\draw.py"缺失?:
import io
import os.path as osp
import numpy as np
import PIL.Image
import PIL.ImageDraw
import PIL.ImageFont
def label_colormap(N=256):
def bitget(byteval, idx):
return ((byteval & (1 << idx)) != 0)
cmap = np.zeros((N, 3))
for i in range(0, N):
id = i
r, g, b = 0, 0, 0
for j in range(0, 8):
r = np.bitwise_or(r, (bitget(id, 0) << 7 - j))
g = np.bitwise_or(g, (bitget(id, 1) << 7 - j))
b = np.bitwise_or(b, (bitget(id, 2) << 7 - j))
id = (id >> 3)
cmap[i, 0] = r
cmap[i, 1] = g
cmap[i, 2] = b
cmap = cmap.astype(np.float32) / 255
return cmap
def _validate_colormap(colormap, n_labels):
if colormap is None:
colormap = label_colormap(n_labels)
else:
assert colormap.shape == (colormap.shape[0], 3), \
'colormap must be sequence of RGB values'
assert 0 <= colormap.min() and colormap.max() <= 1, \
'colormap must ranges 0 to 1'
return colormap
# similar function as skimage.color.label2rgb
def label2rgb(
lbl, img=None, n_labels=None, alpha=0.5, thresh_suppress=0, colormap=None,
):
if n_labels is None:
n_labels = len(np.unique(lbl))
colormap = _validate_colormap(colormap, n_labels)
colormap = (colormap * 255).astype(np.uint8)
lbl_viz = colormap[lbl]
lbl_viz[lbl == -1] = (0, 0, 0) # unlabeled
if img is not None:
img_gray = PIL.Image.fromarray(img).convert('LA')
img_gray = np.asarray(img_gray.convert('RGB'))
# img_gray = cv2.cvtColor(img, cv2.COLOR_RGB2GRAY)
# img_gray = cv2.cvtColor(img_gray, cv2.COLOR_GRAY2RGB)
lbl_viz = alpha * lbl_viz + (1 - alpha) * img_gray
lbl_viz = lbl_viz.astype(np.uint8)
return lbl_viz
def draw_label(label, img=None, label_names=None, colormap=None, **kwargs):
"""Draw pixel-wise label with colorization and label names.
label: ndarray, (H, W)
Pixel-wise labels to colorize.
img: ndarray, (H, W, 3), optional
Image on which the colorized label will be drawn.
label_names: iterable
List of label names.
"""
import matplotlib.pyplot as plt
backend_org = plt.rcParams['backend']
plt.switch_backend('agg')
plt.subplots_adjust(left=0, right=1, top=1, bottom=0,
wspace=0, hspace=0)
plt.margins(0, 0)
plt.gca().xaxis.set_major_locator(plt.NullLocator())
plt.gca().yaxis.set_major_locator(plt.NullLocator())
if label_names is None:
label_names = [str(l) for l in range(label.max() + 1)]
colormap = _validate_colormap(colormap, len(label_names))
label_viz = label2rgb(
label, img, n_labels=len(label_names), colormap=colormap, **kwargs
)
plt.imshow(label_viz)
plt.axis('off')
plt_handlers = []
plt_titles = []
for label_value, label_name in enumerate(label_names):
if label_value not in label:
continue
fc = colormap[label_value]
p = plt.Rectangle((0, 0), 1, 1, fc=fc)
plt_handlers.append(p)
plt_titles.append('{value}: {name}'
.format(value=label_value, name=label_name))
plt.legend(plt_handlers, plt_titles, loc='lower right', framealpha=.5)
f = io.BytesIO()
plt.savefig(f, bbox_inches='tight', pad_inches=0)
plt.cla()
plt.close()
plt.switch_backend(backend_org)
out_size = (label_viz.shape[1], label_viz.shape[0])
out = PIL.Image.open(f).resize(out_size, PIL.Image.BILINEAR).convert('RGB')
out = np.asarray(out)
return out
def draw_instances(
image=None,
bboxes=None,
labels=None,
masks=None,
captions=None,
):
import matplotlib
# TODO(wkentaro)
assert image is not None
assert bboxes is not None
assert labels is not None
assert masks is None
assert captions is not None
viz = PIL.Image.fromarray(image)
draw = PIL.ImageDraw.ImageDraw(viz)
font_path = osp.join(
osp.dirname(matplotlib.__file__),
'mpl-data/fonts/ttf/DejaVuSans.ttf'
)
font = PIL.ImageFont.truetype(font_path)
colormap = label_colormap(255)
for bbox, label, caption in zip(bboxes, labels, captions):
color = colormap[label]
color = tuple((color * 255).astype(np.uint8).tolist())
xmin, ymin, xmax, ymax = bbox
draw.rectangle((xmin, ymin, xmax, ymax), outline=color)
draw.text((xmin, ymin), caption, font=font)
return np.asarray(viz)