Create app.py

app.py

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+import streamlit as st
+import cv2
+import numpy as np
+from PIL import Image
+
+# 打开摄像头
+def load_camera():
+    cap = cv2.VideoCapture(0)  # 0 是默认摄像头的索引
+    if not cap.isOpened():
+        st.error("Cannot open camera")
+        return None
+    return cap
+
+# 捕获图片
+def capture_image(cap):
+    ret, frame = cap.read()
+    if not ret:
+        st.error("Can't receive frame (stream end?). Exiting ...")
+        return None
+    return frame
+
+# 主程序
+def main():
+    st.title("Camera Capture with Streamlit")
+    
+    # 摄像头对象
+    cap = load_camera()
+
+    if cap:
+        st.sidebar.button("Click to Capture", key="capture")
+        frame = capture_image(cap)
+        
+        if frame is not None:
+            # 将图像从BGR转换为RGB
+            frame_rgb = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)
+            img = Image.fromarray(frame_rgb)
+
+            # 显示图像
+            st.image(img, caption="Captured Image", use_column_width=True)
+
+        # 释放摄像头资源
+        cap.release()
+
+if __name__ == "__main__":
+    main()