实际上，我正在尝试跟踪图像，当我单击“跟踪图像”按钮时，它会打开相机，但会提供与ID相关的异常。
Exception in Tkinter callback Traceback (most recent call last): File "C:\Users\pc\Anaconda3\lib\site-packages\pandas\core\indexes\base.py", line 3078, in get_loc return self._engine.get_loc(key) File "pandas\_libs\index.pyx", line 140, in pandas._libs.index.IndexEngine.get_loc File "pandas\_libs\index.pyx", line 162, in pandas._libs.index.IndexEngine.get_loc File "pandas\_libs\hashtable_class_helper.pxi", line 1492, in pandas._libs.hashtable.PyObjectHashTable.get_item File "pandas\_libs\hashtable_class_helper.pxi", line 1500, in pandas._libs.hashtable.PyObjectHashTable.get_item KeyError: 'Id' During handling of the above exception, another exception occurred: Traceback (most recent call last): File "C:\Users\pc\Anaconda3\lib\tkinter\__init__.py", line 1705, in __call__ return self.func(*args) File "I:/Attendence_Project/Attendence.py", line 166, in TrackImages aa = df.iloc[df['Id'] == Id]['Name'].values File "C:\Users\pc\Anaconda3\lib\site-packages\pandas\core\frame.py", line 2688, in __getitem__ return self._getitem_column(key) File "C:\Users\pc\Anaconda3\lib\site-packages\pandas\core\frame.py", line 2695, in _getitem_column return self._get_item_cache(key) File "C:\Users\pc\Anaconda3\lib\site-packages\pandas\core\generic.py", line 2489, in _get_item_cache values = self._data.get(item) File "C:\Users\pc\Anaconda3\lib\site-packages\pandas\core\internals.py", line 4115, in get loc = self.items.get_loc(item) File "C:\Users\pc\Anaconda3\lib\site-packages\pandas\core\indexes\base.py", line 3080, in get_loc return self._engine.get_loc(self._maybe_cast_indexer(key)) File "pandas\_libs\index.pyx", line 140, in pandas._libs.index.IndexEngine.get_loc File "pandas\_libs\index.pyx", line 162, in pandas._libs.index.IndexEngine.get_loc File "pandas\_libs\hashtable_class_helper.pxi", line 1492, in pandas._libs.hashtable.PyObjectHashTable.get_item File "pandas\_libs\hashtable_class_helper.pxi", line 1500, in pandas._libs.hashtable.PyObjectHashTable.get_item KeyError: 'Id'
我已将数据保存在CSV（Excel）文件中，并且图像存储在文件夹中。
因为我已经训练了文件夹中存储的图像的数据（YML格式）。
请帮助我消除此错误。
def TrackImages():
recognizer = cv2.face_LBPHFaceRecognizer.create()
recognizer.read("TrainingImageLabel\Trainner.yml")
harcascadePath = "I:\\opencv\\build\\etc\\haarcascades\\haarcascade_frontalface_default.xml"
faceCascade = cv2.CascadeClassifier(harcascadePath);
df = pd.read_csv("StudentDetails\studentDetails.csv",header=0,encoding = 'unicode_escape')
cam = cv2.VideoCapture(0)
font = cv2.FONT_HERSHEY_SIMPLEX
col_names = ['Id','Name','Date','Time']
attendence = pd.DataFrame(columns = col_names)
while True:
ret, im = cam.read()
gray = cv2.cvtColor(im, cv2.COLOR_BGR2GRAY)
faces = faceCascade.detectMultiScale(gray, 1.2, 5)
for (x,y,w,h) in faces:
cv2.rectangle(im, (x,y), (x+w,y+h), (255,0,0),2)
Id, conf = recognizer.predict(gray[y:y+h, x:x+w])
if (conf <50):
ts = time.time()
date = datetime.datetime.fromtimestamp(ts).strftime('%Y-%m-%d')
timeStamp = datetime.datetime.fromtimestamp(ts).strftime('%H:%M:%S')
aa = df.iloc[df['Id'] == Id]['Name'].values **Error generating line**
tt = str(Id)+"-"+aa
attendence.iloc[len(attendence)] = [Id,aa,date,timeStamp]
else:
Id = 'Unknown'
tt = str(Id)
if(conf>75):
noOfFile = len(os.listdir("ImagesUnknown"))+1
cv2.imwrite("ImagesUnknown\Image"+str(noOfFile)+".jpg", im[y:y+h,x:x+w])
cv2.putText(im.str(tt), (x,y+h), font, 1,(255,255,255),2)
attendence= attendence.drop_duplicates(subset = ['Id'], keep='first')
cv2.imshow('im',im)
if (cv2.waitKey(1) == ord('q')):
break
ts = time.time()
date = datetime.datetime.fromtimestamp(ts).strftime('%Y-%m-%d')
timeStamp = datetime.datetime.fromtimestamp(ts).strftime('%H:%M:%S')
Hour,Minute,Second = timeStamp.split(":")
fileName = "Attendence\Attendence_" +date+"_"+ Hour+"-"+Minute+"-"+Second+".csv"
attendence.to_csv(fileName,index=False)
cam.release()
cv2.destroyAllWindows()
res = attendence
message1.configure(text = res)```