对于“文本”，无法将类型 'function' 的对象转换为 'str'
Can't convert object of type 'function' to 'str' for 'text
大家好 很抱歉我是 python 编程的新手 很抱歉，如果我问这个，即使这是基本的或不是。有人可以帮我吗？问题是我想将我的 Pyserial 从我的 Arduino 温度传感器读取的数据放入，但我不知道如何。
这里是温度到 pyserial 的代码：
def tempe():
import serial
import time
ser = serial.Serial('COM5', 9600)
time.sleep(2)
data =[] # empty list to store the data
for i in range(50):
b = ser.readline() # read a byte string
string = b.rstrip() # remove \n and \r
temp = string <= this data here I want to show to my opencv
data.append(string) # add to the end of data list
time.sleep(0.1) # wait (sleep) 0.1 seconds
ser.close()
这是我想在 opencv 上的 PutText 中显示的完整代码：
def offrecog():
screen2.destroy() <=dont mind this
screen.destroy() <= dont mind this
def recog2(img, classifier, scaleFactor,miNeighbors, color, text, clf):
image = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
features = classifier.detectMultiScale(image, scaleFactor, miNeighbors)
for (x,y,w,h) in features:
cv2.rectangle(img, (x,y),(x+w,y+h), color, 2)
id, pred = clf.predict(image [y:y+h, x:x+w])
confidence = int(100*(1-pred/300))
databases = mysql.connector.connect(
host ="localhost",
user = "userdata",
password = "",
database = "facerecog"
)
mycursor = databases.cursor()
mycursor.execute("SELECT names FROM record WHERE ids= " + str(id))
datas = mycursor.fetchone()
datas = "+".join(datas)
cursor2 = databases.cursor()
cursor2.execute("SELECT course_year FROM record WHERE ids= " + str(id))
datas1 = mycursor.fetchone()
datas1 = "+".join(datas1)
cursor3 = databases.cursor()
cursor3.execute("SELECT positions FROM record WHERE ids= " + str(id))
datas2 = mycursor.fetchone()
datas2 = "+".join(datas2)
if confidence>70:
cv2.putText(img, datas, (x,y+205), cv2.FONT_HERSHEY_SIMPLEX, 0.8, color, 2, cv2.LINE_AA)
cv2.putText(img, datas1, (x,y+230), cv2.FONT_HERSHEY_SIMPLEX, 0.8, color, 2, cv2.LINE_AA)
cv2.putText(img, datas2, (x,y+250), cv2.FONT_HERSHEY_SIMPLEX, 0.8, color, 2, cv2.LINE_AA)
cv2.putText(img, tempe, (x,y+280), cv2.FONT_HERSHEY_SIMPLEX, 0.8, color, 2, cv2.LINE_AA)
markattend(datas,datas1,datas2)
else:
cv2.putText(img, "UNKNOWN", (x,y+205), cv2.FONT_HERSHEY_SIMPLEX, 0.8, (0,0,255), 1, cv2.LINE_AA)
return img
faceCascade = cv2.CascadeClassifier("C:\Users\So_Low\Desktop\final_recog\haarcascade_frontalface_default.xml")
clf = cv2.face.LBPHFaceRecognizer_create()
clf.read("trained.xml")
video_capture = cv2.VideoCapture(0)
while True:
ret, img = video_capture.read()
img = recog2(img, faceCascade, 1.3, 4, (255,255,255), "Face", clf)
cv2.imshow("FACE RECOGNITION", img)
if cv2.waitKey(1) & 0xFF == ord('!'):
break
video_capture.release()
cv2.destroyAllWindows()
screen2.destroy()
我在 运行 时遇到了这个错误：
File "c:\Users\So_Low\Desktop\Offrecog\offrecog.py", line 97, in recog2
cv2.putText(img, wew, (x,y+280), cv2.FONT_HERSHEY_SIMPLEX, 0.8, color, 2, cv2.LINE_AA)
cv2.error: OpenCV(4.5.3) :-1: error: (-5:Bad argument) in function 'putText'
> Overload resolution failed:
> - Can't convert object of type 'function' to 'str' for 'text'
> - Can't convert object of type 'function' to 'str' for 'text'
[ WARN:0] global C:\Users\runneradmin\AppData\Local\Temp\pip-req-build-u4kjpz2z\opencv\modules\videoio\src\cap_msmf.cpp (438) `anonymous-namespace'::SourceReaderCB::~SourceReaderCB terminating async callback
[Done] exited with code=0 in 14.22 seconds
[Running] python -u "c:\Users\So_Low\Desktop\Offrecog\offrecog.py"
Exception in Tkinter callback
Traceback (most recent call last):
File "I:\Python\lib\tkinter\__init__.py", line 1883, in __call__
return self.func(*args)
File "c:\Users\So_Low\Desktop\Offrecog\offrecog.py", line 136, in login_verify
offrecog()
File "c:\Users\So_Low\Desktop\Offrecog\offrecog.py", line 113, in offrecog
img = recog2(img, faceCascade, 1.3, 4, (255,255,255), "Face", clf)
File "c:\Users\So_Low\Desktop\Offrecog\offrecog.py", line 95, in recog2
cv2.putText(img, temps, (x,y+280), cv2.FONT_HERSHEY_SIMPLEX, 0.8, color, 2, cv2.LINE_AA)
cv2.error: OpenCV(4.5.3) :-1: error: (-5:Bad argument) in function 'putText'
> Overload resolution failed:
> - Can't convert object of type 'module' to 'str' for 'text'
> - Can't convert object of type 'module' to 'str' for 'text'
即使我不将温度代码放入函数中，它 运行 在 opencv 之前的 pyserial 1st。
请帮助我不知道该怎么办。请
大概您想对温度进行 50 次采样，然后 return 一个值？
def get_temp(ser, num_samples=50):
float_vals = [float(ser.readline()) for _ in range(num_samples)]
avg_val = sum(float_vals)/len(float_vals)
return str(avg_val) # convert to string for open cv
然后在您的 opencv 调用中使用 get_temp(ser) 而不是 tempe
其中 ser 是一个已经打开的串行实例
如果采集 50 个样本太慢那么你总是可以用 get_temp(ser,5) 采集更少的样本例如只采集 5 个样本......如果你想要模式或中位数而不是平均值那么我会推荐只使用 numpy.mode 或 numpy.median 而不是计算它（使用 numpy.mean 可能比手动计算平均值更快）
您的函数 tempe 似乎没有返回任何内容。
为什么不尝试在函数末尾添加 return data（在 ser.close() 之后）？
def tempe():
import serial
import time
ser = serial.Serial('COM5', 9600)
time.sleep(2)
data =[] # empty list to store the data
for i in range(50):
b = ser.readline() # read a byte string
string = b.rstrip() # remove \n and \r
temp = string <= this data here I want to show to my opencv
data.append(string) # add to the end of data list
time.sleep(0.1) # wait (sleep) 0.1 seconds
ser.close()
return data <= try adding this
您可能需要注意，您不能直接将此列表放入 addText 命令中，因为 cv2 似乎不支持从除字符串以外的任何内容中获取数据。我认为您可以使用 for 循环使用 for text in tempe() 遍历 tempe() 并用它做任何您想做的事。同样，取决于您的具体用例。
大家好 很抱歉我是 python 编程的新手 很抱歉，如果我问这个，即使这是基本的或不是。有人可以帮我吗？问题是我想将我的 Pyserial 从我的 Arduino 温度传感器读取的数据放入，但我不知道如何。
这里是温度到 pyserial 的代码：
def tempe():
import serial
import time
ser = serial.Serial('COM5', 9600)
time.sleep(2)
data =[] # empty list to store the data
for i in range(50):
b = ser.readline() # read a byte string
string = b.rstrip() # remove \n and \r
temp = string <= this data here I want to show to my opencv
data.append(string) # add to the end of data list
time.sleep(0.1) # wait (sleep) 0.1 seconds
ser.close()
这是我想在 opencv 上的 PutText 中显示的完整代码：
def offrecog():
screen2.destroy() <=dont mind this
screen.destroy() <= dont mind this
def recog2(img, classifier, scaleFactor,miNeighbors, color, text, clf):
image = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
features = classifier.detectMultiScale(image, scaleFactor, miNeighbors)
for (x,y,w,h) in features:
cv2.rectangle(img, (x,y),(x+w,y+h), color, 2)
id, pred = clf.predict(image [y:y+h, x:x+w])
confidence = int(100*(1-pred/300))
databases = mysql.connector.connect(
host ="localhost",
user = "userdata",
password = "",
database = "facerecog"
)
mycursor = databases.cursor()
mycursor.execute("SELECT names FROM record WHERE ids= " + str(id))
datas = mycursor.fetchone()
datas = "+".join(datas)
cursor2 = databases.cursor()
cursor2.execute("SELECT course_year FROM record WHERE ids= " + str(id))
datas1 = mycursor.fetchone()
datas1 = "+".join(datas1)
cursor3 = databases.cursor()
cursor3.execute("SELECT positions FROM record WHERE ids= " + str(id))
datas2 = mycursor.fetchone()
datas2 = "+".join(datas2)
if confidence>70:
cv2.putText(img, datas, (x,y+205), cv2.FONT_HERSHEY_SIMPLEX, 0.8, color, 2, cv2.LINE_AA)
cv2.putText(img, datas1, (x,y+230), cv2.FONT_HERSHEY_SIMPLEX, 0.8, color, 2, cv2.LINE_AA)
cv2.putText(img, datas2, (x,y+250), cv2.FONT_HERSHEY_SIMPLEX, 0.8, color, 2, cv2.LINE_AA)
cv2.putText(img, tempe, (x,y+280), cv2.FONT_HERSHEY_SIMPLEX, 0.8, color, 2, cv2.LINE_AA)
markattend(datas,datas1,datas2)
else:
cv2.putText(img, "UNKNOWN", (x,y+205), cv2.FONT_HERSHEY_SIMPLEX, 0.8, (0,0,255), 1, cv2.LINE_AA)
return img
faceCascade = cv2.CascadeClassifier("C:\Users\So_Low\Desktop\final_recog\haarcascade_frontalface_default.xml")
clf = cv2.face.LBPHFaceRecognizer_create()
clf.read("trained.xml")
video_capture = cv2.VideoCapture(0)
while True:
ret, img = video_capture.read()
img = recog2(img, faceCascade, 1.3, 4, (255,255,255), "Face", clf)
cv2.imshow("FACE RECOGNITION", img)
if cv2.waitKey(1) & 0xFF == ord('!'):
break
video_capture.release()
cv2.destroyAllWindows()
screen2.destroy()
我在 运行 时遇到了这个错误：
File "c:\Users\So_Low\Desktop\Offrecog\offrecog.py", line 97, in recog2
cv2.putText(img, wew, (x,y+280), cv2.FONT_HERSHEY_SIMPLEX, 0.8, color, 2, cv2.LINE_AA)
cv2.error: OpenCV(4.5.3) :-1: error: (-5:Bad argument) in function 'putText'
> Overload resolution failed:
> - Can't convert object of type 'function' to 'str' for 'text'
> - Can't convert object of type 'function' to 'str' for 'text'
[ WARN:0] global C:\Users\runneradmin\AppData\Local\Temp\pip-req-build-u4kjpz2z\opencv\modules\videoio\src\cap_msmf.cpp (438) `anonymous-namespace'::SourceReaderCB::~SourceReaderCB terminating async callback
[Done] exited with code=0 in 14.22 seconds
[Running] python -u "c:\Users\So_Low\Desktop\Offrecog\offrecog.py"
Exception in Tkinter callback
Traceback (most recent call last):
File "I:\Python\lib\tkinter\__init__.py", line 1883, in __call__
return self.func(*args)
File "c:\Users\So_Low\Desktop\Offrecog\offrecog.py", line 136, in login_verify
offrecog()
File "c:\Users\So_Low\Desktop\Offrecog\offrecog.py", line 113, in offrecog
img = recog2(img, faceCascade, 1.3, 4, (255,255,255), "Face", clf)
File "c:\Users\So_Low\Desktop\Offrecog\offrecog.py", line 95, in recog2
cv2.putText(img, temps, (x,y+280), cv2.FONT_HERSHEY_SIMPLEX, 0.8, color, 2, cv2.LINE_AA)
cv2.error: OpenCV(4.5.3) :-1: error: (-5:Bad argument) in function 'putText'
> Overload resolution failed:
> - Can't convert object of type 'module' to 'str' for 'text'
> - Can't convert object of type 'module' to 'str' for 'text'
即使我不将温度代码放入函数中，它 运行 在 opencv 之前的 pyserial 1st。 请帮助我不知道该怎么办。请
大概您想对温度进行 50 次采样，然后 return 一个值？
def get_temp(ser, num_samples=50):
float_vals = [float(ser.readline()) for _ in range(num_samples)]
avg_val = sum(float_vals)/len(float_vals)
return str(avg_val) # convert to string for open cv
然后在您的 opencv 调用中使用 get_temp(ser) 而不是 tempe
其中 ser 是一个已经打开的串行实例
如果采集 50 个样本太慢那么你总是可以用 get_temp(ser,5) 采集更少的样本例如只采集 5 个样本......如果你想要模式或中位数而不是平均值那么我会推荐只使用 numpy.mode 或 numpy.median 而不是计算它（使用 numpy.mean 可能比手动计算平均值更快）
您的函数 tempe 似乎没有返回任何内容。
为什么不尝试在函数末尾添加 return data（在 ser.close() 之后）？
def tempe():
import serial
import time
ser = serial.Serial('COM5', 9600)
time.sleep(2)
data =[] # empty list to store the data
for i in range(50):
b = ser.readline() # read a byte string
string = b.rstrip() # remove \n and \r
temp = string <= this data here I want to show to my opencv
data.append(string) # add to the end of data list
time.sleep(0.1) # wait (sleep) 0.1 seconds
ser.close()
return data <= try adding this
您可能需要注意，您不能直接将此列表放入 addText 命令中，因为 cv2 似乎不支持从除字符串以外的任何内容中获取数据。我认为您可以使用 for 循环使用 for text in tempe() 遍历 tempe() 并用它做任何您想做的事。同样，取决于您的具体用例。