Revision history [back]

I am currently working on License Plate recognition using custom HoG and SVM. I have the features of my image data set extracted and saved in an xml file. Here is the code:

train_list = [] response_list = []

hog = cv2.HOGDescriptor()

for i in range(2,7): img = cv2.imread(str(i) + "_.png") h = hog.compute(img) train_list.append(h) response_list.append(i)

model = cv2.SVM() x = model.train(np.array(train_list), np.array(response_list)) model.save('trained.xml')

However, when I use SVM predict to classify if a certain image is positive or negative, I get the following error:

Input sample must have 32fC1 type in function cvPreparePredictData

Here is my code for using svm predict method:

img = cv2.imread('2.jpg',cv2.IMREAD_COLOR) img2 = img.ravel() #conversion to a 1D matrix

svm = cv2.SVM() svm.load('trained.xml')

svm.predict(img2)

Kindly help me resolve the above error.

I am currently working on License Plate recognition using custom HoG and SVM. I have the features of my image data set extracted and saved in an xml file. Here is the code:

train_list = []
response_list = []
[]
  
hog = cv2.HOGDescriptor()cv2.HOGDescriptor()
  
for i in range(2,7):
img = cv2.imread(str(i) + "_.png")
h = hog.compute(img)
train_list.append(h)
response_list.append(i)response_list.append(i)
  
model = cv2.SVM()
x = model.train(np.array(train_list), np.array(response_list))
model.save('trained.xml')model.save('trained.xml')

Input sample must have 32fC1 type in function cvPreparePredictData
cvPreparePredictData

img = cv2.imread('2.jpg',cv2.IMREAD_COLOR)
img2 = img.ravel() #conversion to a 1D matrix
matrix
  
svm = cv2.SVM()
svm.load('trained.xml')svm.load('trained.xml')
  
svm.predict(img2)svm.predict(img2)