save pic

Author: makelove

ch05-视频/VideoCaptureOnePicture.py

@@ -10,11 +10,26 @@
 
 import numpy as np
 import cv2
+import string, random
+
+
+def id_generator(size=6, chars=string.ascii_uppercase + string.digits):
+    return ''.join(random.choice(chars) for _ in range(size))
+
 
 cap = cv2.VideoCapture(0)
 
-if cap.isOpened():
+while cap.isOpened():
     ret, frame = cap.read()
-    print('frame.shape:',frame.shape)#(720, 1280, 3)
+    print('frame.shape:', frame.shape)  # (720, 1280, 3)
+
+    cv2.imshow('frame',frame)
+
+    key = cv2.waitKey(delay=1)
+    if key == ord("q"):
+        break
+    elif key == ord("s"):
+        cv2.imwrite(id_generator() + '.jpg', frame)
 
-    cv2.imwrite('from_camera1.jpg',frame)
+cap.release()
+cv2.destroyAllWindows()

ch200_Extra_modules/aruco/Camera Calibration using ChArUco and Python/aruco_test1.py

@@ -58,7 +58,7 @@
     print(cal)
     retval, cameraMatrix, distCoeffs, rvecs, tvecs = cal#TODO 然后怎么办？
     #TODO saveCameraParams
-    np.savez('calib.npz',mtx=cameraMatrix,dist=distCoeffs,rvecs=rvecs,tvecs=tvecs)
+    np.savez('calib.npz',mtx=cameraMatrix,dist=distCoeffs,rvecs=rvecs,tvecs=tvecs)#保存下载，下次不用校准了。
     # np.savez(outfile, x=x, y=y)
 except:
     cap.release()