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トップに関する質問エラー：UnboundLocalError: local variable 'gray' referenced before assignment　を解決したいです。

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質問編集履歴

7

誤字

2019/12/08 13:38

投稿

cherei
cherei

スコア12

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  ]
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  ```python
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  import numpy as np

6

誤字

2019/12/08 13:38

投稿

cherei
cherei

スコア12

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  以下のサイトは見ましたがよくわかりませんでした。
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- https://teratail.com/questions/149453
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+ [https://teratail.com/questions/149453
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+
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-
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+ ]
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-
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  ```python
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5

誤字

2019/12/08 13:37

投稿

cherei
cherei

スコア12

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  Traceback (most recent call last):
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  File "C:/Users/tampa/PycharmProjects/camera-calib/Camera_Calibration.py", line 134, in <module>
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  A = Calibration('calb_test/test2/')
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  File "C:/Users/tampa/PycharmProjects/camera-calib/Camera_Calibration.py", line 91, in Calibration
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  ret, mtx, dist, rvecs, tvecs = cv2.calibrateCamera(objpoints, imgpoints, gray.shape[::-1], None, None)

4

誤字

2019/12/08 13:36

投稿

cherei
cherei

スコア12

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  print(A)
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  ```
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+ ```エラーコード
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+ Traceback (most recent call last):
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+ File "C:/Users/tampa/PycharmProjects/camera-calib/Camera_Calibration.py", line 134, in <module>
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+ A = Calibration('calb_test/test2/')
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+ File "C:/Users/tampa/PycharmProjects/camera-calib/Camera_Calibration.py", line 91, in Calibration
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+ ret, mtx, dist, rvecs, tvecs = cv2.calibrateCamera(objpoints, imgpoints, gray.shape[::-1], None, None)
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+ UnboundLocalError: local variable 'gray' referenced before assignment
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+ ```

3

誤字

2019/12/08 13:30

投稿

cherei
cherei

スコア12

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  ```python
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- ＃コード
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  import numpy as np
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  import cv2
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  import glob
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  def Calibration(path):
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-
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+ # termination criteria
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- criteria = (cv2.TERM_CRITERIA_EPS + cv2.TERM_CRITERIA_MAX_ITER, 30, 0.001
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+ criteria = (cv2.TERM_CRITERIA_EPS + cv2.TERM_CRITERIA_MAX_ITER, 30, 0.001)
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+ # prepare object points, like (0,0,0), (1,0,0), (2,0,0) ....,(6,5,0)
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  objp = np.zeros((6 * 8, 3), np.float32)
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  objp[:, :2] = np.mgrid[0:8, 0:6].T.reshape(-1, 2)
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+ # Arrays to store object points and image points from all the images.
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  objpoints = [] # 3d point in real world space
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@@ -60,11 +64,13 @@
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+ # Find the chess board corners
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  ret, corners = cv2.findChessboardCorners(gray, (8, 6), flags=cv2.CALIB_CB_FAST_CHECK)
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  print(ret)
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+ # If found, add object points, image points (after refining them)
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  if ret == True:
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+ # Draw and display the corners
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  img = cv2.drawChessboardCorners(img, (8, 6), corners2, ret)
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  width = img.shape[1]
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+ # cv2.imshow('img',img)
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@@ -110,11 +116,13 @@
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  newcameramtx, roi = cv2.getOptimalNewCameraMatrix(mtx, dist, (w, h), 1, (w, h))
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+ # undistort
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  dst = cv2.undistort(img, mtx, dist, None, newcameramtx)
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+ # crop the image
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  x, y, w, h = roi
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- cap.release()
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+ cap.release() # When everything done, release the capture
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+ #
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  if __name__ == '__main__':
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+ # video_split('calb_test/test.mov')
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  A = Calibration('calb_test/test2/')
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2

誤字

2019/12/08 09:36

投稿

cherei
cherei

スコア12

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+ 以下のサイトは見ましたがよくわかりませんでした。
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+ https://teratail.com/questions/149453
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+ ```python
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  ＃コード
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@@ -179,3 +185,5 @@
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  A = Calibration('calb_test/test2/')
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  print(A)
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+ ```

1

誤字

2019/12/08 09:34

投稿

cherei
cherei

スコア12

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- エラー：UnboundLocalError: local variable 'gray' referenced before assignment
1
+ エラー：UnboundLocalError: local variable 'gray' referenced before assignment　を解決したいです。
test CHANGED
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