fll2025/main2.py

import cv2
from ultralytics import YOLO
def getxy(cvx,cvy):
    returny="南"+str((cvy+446.6)*18/1000*0.54)+"海里"
    returnx=""
    if cvx<335:
        returnx+="西"
        returnx+=str((335-cvx)*18/1000*0.54)+"海里"
    elif cvx>335:
        returnx+="东"
        returnx+=str((cvx-335)*18/1000*0.54) + "海里"
    else:
        returnx+="中0海里"
    return returnx,returny
model = YOLO("./best4_ncnn_model")
import matplotlib.pyplot as plt
plt.rcParams['font.family'] = 'SimHei'  # 设置字体为中文黑体
def zh_ch(string):
    return string.encode("gbk").decode(errors="ignore")
cap = cv2.VideoCapture(0)
cv2.namedWindow('window', cv2.WINDOW_NORMAL)
cv2.setWindowProperty('window', cv2.WND_PROP_FULLSCREEN, cv2.WINDOW_FULLSCREEN)
while cap.isOpened():
    # 读取摄像头帧
    success, frame = cap.read()

    if not success:
        break

    # 使用 YOLOv8 进行检测（conf 设置置信度阈值）
    results = model(frame, conf=0.91)

    # 初始化绿潮检测标志
    green_tide_detected = False
    red_tide_detected = False
    fluorescent_sea_detected = False
    # 遍历检测结果
    for result in results:
        for box in result.boxes:
            # 获取坐标（xyxy 格式）
            x1, y1, x2, y2 = map(int, box.xyxy[0])

            # 获取类别 ID 和名称
            class_id = int(box.cls)
            class_name = model.names[class_id]

            # 获取置信度（保留 2 位小数）
            confidence = round(float(box.conf), 2)

            # 绘制检测框
            cv2.rectangle(frame, (x1, y1), (x2, y2), (0, 255, 0), 2)

            # 显示类别和置信度
            label = f"{class_name}: {confidence:.2f}"
            cv2.putText(frame, label, (x1, y1 - 10), cv2.FONT_HERSHEY_SIMPLEX, 0.5, (0, 255, 0), 2)

            # 检查是否是绿潮
            if class_name == "greentide":
                green_tide_detected = True
            if class_name == "redtide":
                red_tide_detected = True
            if class_name=="fluorescent_sea":
                fluorescent_sea_detected = True

    # 如果检测到绿潮，在右上角显示提示
    if green_tide_detected:
        x1_return,y1_return=getxy(x1,y1)
        x2_return,y2_return=getxy(x2,y2)
        centerx_return,centery_return=getxy((x1+x2)*0.5,(y1+y2)*0.5)
        text="检测到发生绿潮,左上位置:"+x1_return+","+y1_return+",\n右下位置:"+x2_return+","+y2_return+",\n中心位置:"+centerx_return+","+centery_return
        #text = "检测到发生绿潮,左上坐标:("+str(x1*18)+","+str(y1*18)+"),右下坐标:("+str(x2*18)+","+str(y2*18)+"),\n中心点坐标:("+str(int(0.5*18*(x1+x2)))+","+str(int(0.5*18*(y1+y2)))+")"
        font = cv2.FONT_HERSHEY_SIMPLEX
        font_scale = 0.5
        font_thickness = 2
        font_color = (0, 255, 0)  # 绿色

        # 获取文字尺寸
        (text_width, text_height), _ = cv2.getTextSize(text, font, font_scale, font_thickness)

        # 计算右上角位置（留出边距）
        margin = 10
        text_x = frame.shape[1] - text_width - margin
        text_y = text_height + margin

        # 添加半透明背景（可选）
        cv2.rectangle(
            frame,
            (text_x - 5, text_y - text_height - 5),
            (text_x + text_width + 5, text_y + 5),
            (0, 0, 0),
            -1,
        )

        # 绘制文字
        cv2.putText(frame, text, (text_x, text_y), font, font_scale, font_color, font_thickness)
    if red_tide_detected:
        x1_return, y1_return = getxy(x1, y1)
        x2_return, y2_return = getxy(x2, y2)
        centerx_return, centery_return = getxy((x1 + x2) * 0.5, (y1 + y2) * 0.5)
        text = "检测到发生赤潮,左上位置:" + x1_return + "," + y1_return + ",\n右下位置:" + x2_return + "," + y2_return + ",\n中心位置:" + centerx_return + "," + centery_return
        font = cv2.FONT_HERSHEY_SIMPLEX
        font_scale = 0.5
        font_thickness = 2
        font_color = (0, 0, 255)  # 绿色

        # 获取文字尺寸
        (text_width, text_height), _ = cv2.getTextSize(text, font, font_scale, font_thickness)

        # 计算右上角位置（留出边距）
        margin = 10
        text_x = frame.shape[1] - text_width - margin
        text_y = text_height + margin

        # 添加半透明背景（可选）
        cv2.rectangle(
            frame,
            (text_x - 5, text_y - text_height - 5),
            (text_x + text_width + 5, text_y + 5),
            (0, 0, 0),
            -1,
        )

        # 绘制文字
        cv2.putText(frame, text, (text_x, text_y), font, font_scale, font_color, font_thickness)
    if fluorescent_sea_detected:
        x1_return, y1_return = getxy(x1, y1)
        x2_return, y2_return = getxy(x2, y2)
        centerx_return, centery_return = getxy((x1 + x2) * 0.5, (y1 + y2) * 0.5)
        text = "检测到发生荧光海,左上位置:" + x1_return + "," + y1_return + ",\n右下位置:" + x2_return + "," + y2_return + ",\n中心位置:" + centerx_return + "," + centery_return
        font = cv2.FONT_HERSHEY_SIMPLEX
        font_scale = 0.5
        font_thickness = 2
        font_color = (255, 0,0)  # 绿色

        # 获取文字尺寸
        (text_width, text_height), _ = cv2.getTextSize(text, font, font_scale, font_thickness)

        # 计算右上角位置（留出边距）
        margin = 10
        text_x = frame.shape[1] - text_width - margin
        text_y = text_height + margin

        # 添加半透明背景（可选）
        cv2.rectangle(
            frame,
            (text_x - 5, text_y - text_height - 5),
            (text_x + text_width + 5, text_y + 5),
            (0, 0, 0),
            -1,
        )

        # 绘制文字
        cv2.putText(frame, text, (text_x, text_y), font, font_scale, font_color, font_thickness)
    # 显示实时检测画面
    cv2.imshow("window", frame)
    # 按 'q' 退出
    if cv2.waitKey(1) & 0xFF == ord('q'):
        break

# 释放摄像头并关闭窗口
cap.release()
cv2.destroyAllWindows()