A particular case of Ensemble learning, which is based on the concatenation of several classifiers, using all information collected from the output from a given classifier as additional information for the next classifier in the cascade.
Questions tagged [cascade-classifier]
170 questions
0
votes
1 answer
How to make haar cascade classifier for hand detection
A Classifier which detects hand in images... I am doing skin based detection for detecting hand ...
Blockquote
"but i need that the hand would be detected without skin based color"
hammad zafar
- 1
- 2
0
votes
1 answer
Python OpenCV error with CascadeClassifier
import cv2
import imageio
face_cascade = cv2.CascadeClassifier('haarcascade_frontalface_default.xml')
eye_cascade = cv2.CascadeClassifier('haarcascade_eye.xml')
def detect(frame):
gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
faces =…
Mustafa Koca
- 5
- 1
- 6
0
votes
2 answers
OpenCV Haar Cascade Creation
I want to try create my own .xml file for my graduation project with this reference.
But I have a problem which stage 6 doesn't work.It gives error such as:
Traceback (most recent call last):
File "./tools/mergevec.py", line 170, in
…
Arda Ünal
- 3
- 3
0
votes
0 answers
opencv cascadeclassifier not loading .xml file
I've been trying to load the .xml file on cascadeclassifier but it wont work.
Solutions on internet include using \ or / in file path but that does not work for me either
#creating a cascade classifier object
fc =…
user12242501
0
votes
1 answer
Creating your own cascade(.xml) file
I have started to study object detection with Python-OpenCV. I want to create my own cascade files. Is there any software/technology that will do it instead of me? For example, I can just give the positive and the negative images and then it gives…
O'ahrudsayn
- 13
- 4
0
votes
1 answer
I need to turn the texts into vectors then feed the vectors into a classifier
I have a csv file named movie_reviews.csv and the data inside looks like this:
1 Pixar classic is one of the best kids' movies of all time.
1 Apesar de representar um imenso avanço tecnológico, a força
1 It doesn't enhance the experience,…
YixinZhu
- 11
- 1
- 2
0
votes
1 answer
opencv_createsamples.exe location for conda install
I am trying to create a cascade classifier for my program.The docs mention using a script in order to help generate positive images, but I don't know where to get this script. I am wondering if the opencv_createsamples application is available for…
Josh Sharkey
- 1,008
- 9
- 34
0
votes
0 answers
What is the difference between Stump-based and Tree-based frontal face detector?
I have seen few options of haar-cascades for frontal face recognition such as:
"haarcascade_frontalface_alt.xml"
"haarcascade_frontalface_alt_tree.xml"
"haarcascade_frontalface_alt2.xml"
"haarcascade_frontalface_default.xml"
Basically they all do…
Yotam Hammer
- 127
- 1
- 2
- 8
0
votes
4 answers
opencv_createsamples "Assertion Failed" Error
I am trying to create a vec file from my positive image samples. I'm using the latest version of Opencv. The command I am using is this:
opencv_createsamples -info Positive.info -num 3750 -w 24 -h 24 -vec Positive.vec
All my images are bigger than…
SH7890
- 545
- 2
- 7
- 20
0
votes
0 answers
Opencv Create Samples .vec file was not created
I'm trying to make a .vec file for using to create my cascade training XML file. While trying to run the code, I see an error and I couldn't find any answer about this.
May you help me, please?
The error is like that:
Unable to open image:…
Oguzhan KURNAZ
- 1
- 1
0
votes
0 answers
Opencv detectMultiScale error
I want to get frames from my camera and detect faces, I used this code:
face_cascade = cv2.CascadeClassifier('haarcascade_frontalface_default.xml')
eye_cascade = cv2.CascadeClassifier('haarcascade_eye.xml')
cap=cv2.VideoCapture(0)
while 1:
ret,…
user70
- 597
- 2
- 7
- 24
0
votes
0 answers
Background size for cascade training
And again about cascade training. I have set of images with resolution approximately 1000x1000. Object size is nearest 30x50. What is better for background images: take it as is or crop to smalles like 100x100?
PS. I use opencv train_cascade…
Bleach
- 156
- 3
- 15
0
votes
0 answers
OpenCV Detecting Traffic Light green signal
I'm new to OpenCV Object detection using Cascade Classifier and trying to perform an application that detect green signal of a traffic light.
Downloaded a Dataset containing positive pictures about STOP,GO and WARNING pictures of traffic light…
Mssm
- 717
- 11
- 29
0
votes
1 answer
error while visualizing the cascade stage features
I have trained a boosted cascade classifier with opencv and i want to visualize the cascade stages features as shown in the tutorial here: https://docs.opencv.org/3.3.0/dc/d88/...
The problem is that everytime i run the batch:
opencv_visualisation…
Mjd Al Mahasneh
- 47
- 8
0
votes
0 answers
HAAR cascade cannot be trained
Whenever I try to create the HAAR Cascade I get the following error.
===== TRAINING 0-stage =====
Nemi Bhattarai
- 181
- 1
- 4
- 11