yolov8 iou

Yolov8中的IOU（Intersection over Union）方法有三种选择：GIoU（Generalized IoU）、DIoU（Distance IoU）和CIoU（Complete IoU）。其中，默认选择的是CIoU。除此之外，还有一种名为Wise-IoU的IOU方法。

在使用OpenCV和YOLOv8进行视频推理时，可以使用以下代码：
import cv2
from ultralytics import YOLO

# 加载YOLOv8模型
model = YOLO('yolov8n.pt')

# 打开视频文件
video_path = "path/to/your/video/file.mp4"
cap = cv2.VideoCapture(video_path)

# 循环遍历视频帧
while cap.isOpened():
# 从视频中读取一帧
success, frame = cap.read()

if success:
# 在帧上运行YOLOv8推理
results = model(frame)

# 在帧上可视化结果
annotated_frame = results.plot()

# 显示可视化的帧
cv2.imshow("YOLOv8 Inference", annotated_frame)

# 如果按下键盘上的'q'键，则退出循环
if cv2.waitKey(1) & 0xFF == ord("q"):
break

else:
# 如果视频播放结束，则退出循环
break

# 释放视频捕获对象并关闭显示窗口
cap.release()
cv2.destroyAllWindows()

以上是关于使用OpenCV和YOLOv8在视频帧上运行推理的代码示例。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
- *1* [涨点技巧：IOU篇---Yolov8引入WIoU，SIoU，EIoU，α-IoU，不同数据集验证能涨点](https://blog.csdn.net/m0_63774211/article/details/130200951)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_1"}}] [.reference_item style="max-width: 33.333333333333336%"]
- *2* [YoloV8改进策略：将CIoU替换成Wise-IoU，幸福涨点，值得拥有，还支持EIoU、GIoU、DIoU、SIoU无缝替换](https://download.csdn.net/download/qq_40957277/88165137)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_1"}}] [.reference_item style="max-width: 33.333333333333336%"]
- *3* [YOLOv8预测参数详解（全面详细、重点突出、大白话阐述小白也能看懂）](https://blog.csdn.net/qq_37553692/article/details/130910432)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_1"}}] [.reference_item style="max-width: 33.333333333333336%"]
[ .reference_list ]