找到detect.py中的 “annotator.box_label(xyxy, label, color=colors(class_sub, True))”
annotator.box_label(xyxy, label, color=colors(cls, True)) # 区域内画框、标签
按住CTRL，左击box_label，导航到plots.py下的box_label
以下代码与YOLOv5有所更改
def box_label(self, box, label='', color=(128, 128, 128), txt_color=(255, 255, 255)):
# Add one xyxy box to image with label
if self.pil or not is_ascii(label):
self.draw.rectangle(box, width=self.lw, outline=color) # box
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],
box[1] - h if outside else box[1],
box[0] + w + 1,
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
p1, p2 = (int(box[0]), int(box[1])), (int(box[2]), int(box[3]))#左顶，右底
offset = p2[1]-p1[1]
cv2.rectangle(self.im, p1, p2, color, thickness=self.lw, lineType=cv2.LINE_AA)#画矩形框
if label:
tf = max(self.lw - 1, 1) # font thickness
w, h = cv2.getTextSize(label, 0, fontScale=self.lw / 3, thickness=tf)[0] # text width, height
outside = p1[1] - h - 3 >= 0 # label fits outside box
p2 = p1[0] + w, p1[1] - h - 3 if outside else p1[1] + h + 3
offset = offset + (p1[1]-p2[1])
cv2.rectangle(self.im, (p1[0],p1[1]+offset), (p2[0],p2[1]+offset), color, -1, cv2.LINE_AA) # filled#填充label,底色
cv2.putText(self.im, label, (p1[0], p1[1] - 2 + offset if outside else p1[1] + h + 2 + offset), 0, self.lw / 3, txt_color,#label文字
thickness=tf, lineType=cv2.LINE_AA)
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