StevenPuttemans's profile - overview

● Enthusiast   × 1

● Taxonomist   × 1

● Disciplined   × 1

• Vector Subscript Out of Range - what does it mean and how to solve it?

● Nice Question   × 23

• Question about calculation of positive and negative examples for training a LBP classifier and not getting stuck because of a wrong number of nPOS and nNEG.
• Linker settings, gpu functionality removed or integrated with cpu?
• GPU detectMultiScale on LBP classifier gets into an infinite loop, how to check?
• What is the average training time needed for LBP object detector to reach a next stage?
• NO QUESTION - Suggestions concerning this question & answer area
• [GUIDE] - A beginners guide to the Q&A forum (first steps to take)
• First steps to gitHub, need some help adding bugfixes
• DEV NEEDED: Looking for someone with a OpenNI supported camera, trying to debug the new C++ code sample version.
• SVM bias on weights of positives and negatives
• GPU accelerated cascade classifier training, is it in the pipeline? Anyone has tried this before?
• Cmake + openCV2.4.5 (GIT repository - 2.4 branch) + Windows 7 x64 building steps and problems solved (zip with dll's available)
• [REMARK] please stop reporting people as spam bots :)
• Dev forum, not able to access the activity overview
• [ATTENTION] Regarding topics and answers not appearing right away, but requesting moderation
• Passing multiple parameters with the setMouseCallback function
• [ANNOUNCEMENT] Welcome back to the OpenCV Q&A forum 2.0!
• traincascade detections with output score for precision recall curves
• OpenCV 3 doxygen documentation still very counter intuitive
• OpenCV dev forum moving completely to Github
• Backprojecting detections from a rotated image
• LBP model training using traincascade
• The best wishes topic! - Let us celebrate!
• NOTICE: github repo change location

● Necromancer   × 15

• How to Install OpenCV with Processing??
• annotation tool for object detection
• about traincascade paremeters, samples, and other...
• OpenCV4Android : setResolution(Camera.size) is undefined for cameraBridgeViewBase
• matching causes assertion error (Features2d + Homography example) Android jni
• compareHist problem, type != CV_32F
• What is the average training time needed for LBP object detector to reach a next stage?
• Sobel filter doesn't respect ROI
• [REMARK] please stop reporting people as spam bots :)
• [REMARK] please stop reporting people as spam bots :)
• Why does opencv_traincascade not ignore nodes with a false alarm rate of 1
• opencv_traincascade Parameters explanation, image sizes etc
• cascadeclassifier value
• Number of stages or maxFalseAlarmRate?
• Documentation for opencv_annotation

● Self-Learner   × 17

• OpenCV 2.4.3 VideoCapture not working on *.avi file input
• Cmake + openCV2.4.5 (GIT repository - 2.4 branch) + Windows 7 x64 building steps and problems solved (zip with dll's available)
• What is the average training time needed for LBP object detector to reach a next stage?
• GPU detectMultiScale on LBP classifier gets into an infinite loop, how to check?
• Traincascade link problem?
• First steps to gitHub, need some help adding bugfixes
• GitHub fetch latest source code to your forked repository
• SVM bias on weights of positives and negatives
• [REMARK] please stop reporting people as spam bots :)
• [REMARK] please stop reporting people as spam bots :)
• [REMARK] please stop reporting people as spam bots :)
• [ANNOUNCEMENT] Welcome back to the OpenCV Q&A forum 2.0!
• LBP features and cascade classifier training, model details
• Reading HAAR feature information from XML model
• Problem with Harris corner detection on thinned image
• Problem getting CUDA to work on OpenCV3 latest clone
• Marker based watershed not working as expected

● Famous Question   × 6

• [REMARK] please stop reporting people as spam bots :)
• Cmake + openCV2.4.5 (GIT repository - 2.4 branch) + Windows 7 x64 building steps and problems solved (zip with dll's available)
• Combining multiple cv::Mat images into single cv::Mat
• OpenCV 2.4.3 VideoCapture not working on *.avi file input
• SVM bias on weights of positives and negatives
• Passing multiple parameters with the setMouseCallback function

● Notable Question   × 10

• NO QUESTION - Suggestions concerning this question & answer area
• What is the average training time needed for LBP object detector to reach a next stage?
• GPU accelerated cascade classifier training, is it in the pipeline? Anyone has tried this before?
• OpenCV 2.4.3 VideoCapture not working on *.avi file input
• Cmake + openCV2.4.5 (GIT repository - 2.4 branch) + Windows 7 x64 building steps and problems solved (zip with dll's available)
• Combining multiple cv::Mat images into single cv::Mat
• SVM bias on weights of positives and negatives
• [REMARK] please stop reporting people as spam bots :)
• Question about calculation of positive and negative examples for training a LBP classifier and not getting stuck because of a wrong number of nPOS and nNEG.
• Passing multiple parameters with the setMouseCallback function

● Favorite Question   × 2

• OpenCV 3 doxygen documentation still very counter intuitive
• NO QUESTION - Suggestions concerning this question & answer area

● Good Answer   × 41

• How to combine two or more overlapping bounding boxes?
• How to find the two most dominant colors in an image?
• People tracking with fisheye camera
• LBP for vehicle detection
• Open CV's HoughCircles() is ~1000 times faster than my version
• Weird results from cascade training
• How to do OpenCV in Windows Application?
• Some questions about training LBP classifier.
• detectMultiscale fails when weights are requested
• Number of stages or maxFalseAlarmRate?
• how do you plot graphs in opencv projects?
• surf descriptor accepts only grayscale images?
• First steps to gitHub, need some help adding bugfixes
• about traincascade paremeters, samples, and other...
• what is the difference of Mat and Iplimage
• Haartraining and Traincascade crashes creating XML.
• What forums exist for newbys learning opencv
• trouble when use opencv_traincascade.exe
• Cannot view 16-bit grey level Images.
• Accessing pixels along a circle
• hog detectmultiscale
• set ROI in cv::Mat
• custom object recognition with OpenCV
• Tutorials for OpenCV dev
• my classifier using haar cascade can not detect anything
• traincascade: object detection size.
• Need dataset for: car, truck, bus, motorbikes
• Visualizing learned features from Haar cascade classifier
• What is the average training time needed for LBP object detector to reach a next stage?
• Informative websites related to OpenCV
• Training new LatentSVMDetector Models.
• How to detect individual body parts in an image
• point tracking
• Evaluation model of Haar cascade classifier
• fingerprint orientation map through gradient method - opencv c++
• Why there are two versions of OpenCV 3.x and 2.4.xx ?
• Documentation for opencv_annotation
• How does the parameter scaleFactor in detectMultiScale affect face detection?
• traincascade : openMP vs Intel's TBB ?
• Color constancy in different illumination condition
• Confidence value for svm model

● Popular Question   × 16

• Some insights on iris localisation - getting a better accuracy.
• Maximum possible dimensions for a IplImage object
• GPU detectMultiScale on LBP classifier gets into an infinite loop, how to check?
• Create_samples, compiling with static libraries, linker error in highgui module, createToolBarEx
• OpenCV 2.4.3 VideoCapture not working on *.avi file input
• Cmake + openCV2.4.5 (GIT repository - 2.4 branch) + Windows 7 x64 building steps and problems solved (zip with dll's available)
• Combining multiple cv::Mat images into single cv::Mat
• [REMARK] please stop reporting people as spam bots :)
• SVM bias on weights of positives and negatives
• Question about calculation of positive and negative examples for training a LBP classifier and not getting stuck because of a wrong number of nPOS and nNEG.
• LBP model training using traincascade
• NO QUESTION - Suggestions concerning this question & answer area
• Passing multiple parameters with the setMouseCallback function
• What is the average training time needed for LBP object detector to reach a next stage?
• GPU accelerated cascade classifier training, is it in the pipeline? Anyone has tried this before?
• Built OpenCV highgui without GSTREAMER support but with PvAPI support fails, adapting cmake doesn't work

● Great Answer   × 4

• set ROI in cv::Mat
• Informative websites related to OpenCV
• about traincascade paremeters, samples, and other...
• what is the difference of Mat and Iplimage

● Citizen Patrol   × 1

• Hermes A Depeches élégant et beau suivante pourrait avoir un effet

● Nice Answer   × 142

• Image recognition app
• Human Detection and tracking opencv c++
• how to detect object and pattern and retrieve the angle of orientation
• Is there anywhere XML-files already trained to detection most popular objects?
• Where to find Camshift + Kalman Filter samples?
• Detecting car's windshield and rear window
• Counting the Total number of Frames in a video file ?
• Grouping images by a person appearing on them
• real time face tracking java
• How to overlay an PNG image with alpha channel to another PNG?
• annotation tool for object detection
• How to I make a simple response to motion detected?
• How to decrease flickering effect of bounding box in object detection by cascade classifier
• Is there already a way to add custom metadata to cv::Mat or cv::UMat?
• how to create a heat map using opencv instead of one color degrees
• haar cascade parameters
• surf descriptor accepts only grayscale images?
• Android AR apps
• fingerprint orientation map through gradient method - opencv c++
• point tracking
• about traincascade paremeters, samples, and other...
• set ROI in cv::Mat
• How to replace a certain ROI with another image?
• Mood/Emotion Detection (Happy to Sad) using OpenCV
• what is the difference of Mat and Iplimage
• Template Matching for android is rather slow. Need suggestions for faster and more user friendly interface.
• How to Start of OpenCv from Basics
• object identification in aerial image
• What are contours and why use them
• Max camera resolution for opencv?
• Cannot view 16-bit grey level Images.
• Need of Eye detection in Face Recognition?
• How to combine two or more overlapping bounding boxes?
• Calculating the area of selected parts in an aerial image
• Capture one resolution from camera but display another
• Training new LatentSVMDetector Models.
• First steps to gitHub, need some help adding bugfixes
• hog detectmultiscale
• CPU GPU Performance Measurement
• multiple object tracking using kalman filter
• Debugging error in Visual Studio 11 Win8 X64
• GitHub fetch latest source code to your forked repository
• OPENCV 2.4.6 JAVA DOCUMENTATION
• OPENCV 2.4.6 JAVA DOCUMENTATION
• Instant OpenCV Starter, who have?
• unable to properly read 16bit tiff image
• OpenCV for Secret Agents!
• Weird results from cascade training
• How to start camera in OpenCV and draw a rectangle on a detection? Nullpointer exception.
• Random Vehicle Detection
• How to Draw Crosshairs/Marked Axes
• my classifier using haar cascade can not detect anything
• Haartraining and Traincascade crashes creating XML.
• Cascade Training Error OpenCV 2.4.4 - Train dataset for temp stage can not filled. Branch training terminated. Cascade Classifier can't be trained. check the used training parameters
• How does the parameter scaleFactor in detectMultiScale affect face detection?
• Accessing pixels along a circle
• What forums exist for newbys learning opencv
• opencv_traincascade Negative samples training method
• trouble when use opencv_traincascade.exe
• Open CV's HoughCircles() is ~1000 times faster than my version
• What is the average training time needed for LBP object detector to reach a next stage?
• How to convert a colour image into text format
• Cmake + openCV2.4.5 (GIT repository - 2.4 branch) + Windows 7 x64 building steps and problems solved (zip with dll's available)
• LBP for vehicle detection
• How to detect individual body parts in an image
• threshold yuv image
• How to transfer Image from webcam to gray image ?
• People tracking with fisheye camera
• Sobel filter doesn't respect ROI
• [REMARK] please stop reporting people as spam bots :)
• Ways of Doing People Detection
• [ANNOUNCEMENT] Welcome back to the OpenCV Q&A forum 2.0!
• Tool for cropping positive samples
• custom object recognition with OpenCV
• Why does opencv_traincascade not ignore nodes with a false alarm rate of 1
• Tutorials for OpenCV dev
• Cutting a table from an image
• How to create a vector of images in opencv ?
• Visualizing learned features from Haar cascade classifier
• opencv train classifier never contiueus 3 stage
• Why the module is called nonfree?
• opencv_traincascade and opencv_createsample on windows
• Problem with opencv_traincascade version OpenCV 2.4.10.0
• Some questions about training LBP classifier.
• traincascade : openMP vs Intel's TBB ?
• What are the literature papers on which traincascade is based?
• how can I detect human bodies in opencv
• traincascade: object detection size.
• Advices about finding pointing of a bottle with opencv
• How to create a empty rect?
• Why do python bindings for v3 still use package name "cv2"?
• How does scale factor behave in HOG multiscale detector ?
• Best Face and eye detection algorithms for opencv
• Color constancy in different illumination condition
• how can i save detected face in opencv
• Adding information in the Mat
• How to Find the angle at which the face and eyes are detected?
• Removing certain pixels with threshold
• OpenCV 3.0 with VS2013
• Moment and Archlength return values - confused
• About my image processing project...
• Need dataset for: car, truck, bus, motorbikes
• Informative websites related to OpenCV
• Opencv_haartraining does not converge
• Tuning OpenCV HOG method for reliable pedestrian detection using Thermographic camera
• Is Haar Cascade Classification can be considered as Neural Network?
• Measuring Width & Height of Bounding Box
• hough circle
• OpenCV failing to open camera
• how do you plot graphs in opencv projects?
• detecting car from moving vehicle
• convert detected eye region (ROI) to Y channel
• TrainCascade image positive problem
• How to do OpenCV in Windows Application?
• Learning OpenCV basics
• Evaluation model of Haar cascade classifier
• Number of stages or maxFalseAlarmRate?
• haartraining and objectmarker
• How to convert ROI in gray (monochrome) on android?
• Detection of objects on the side
• Haar Feature
• Best machine learning algorithm for detecting cars in aerial images?
• Divide picture into blocks
• How to find the two most dominant colors in an image?
• Documentation for opencv_annotation
• Need Advice In knowing the necessary image processing operations to be performed for robot to follow black line over white background
• detectMultiscale fails when weights are requested
• How to accelerate face detection time using HaarCascade
• compareHist
• CascadeClassifier::detectMultiScale alogical influence of minSize parameter
• Detect cars in video
• opencv_traincascade Parameters explanation, image sizes etc
• How to specify modules with CMake?
• SVM bias on weights of positives and negatives
• Cascade Training Error OpenCV 3.1 - Train dataset for temp stage can not be filled. Branch training terminated. Cascade classifier can't be trained. Check the used training parameters.
• Why there are two versions of OpenCV 3.x and 2.4.xx ?
• Haartraining process display big array data
• make black image in opencv using Iplimage of user specified dimensions
• how can i get individual coffee_beans from the image below
• Choosing between "Concurrency" and "TBB" while building OpenCV
• Confidence value for svm model
• analysis of the vertical and horizontal histogram

● Guru   × 4

• set ROI in cv::Mat
• Informative websites related to OpenCV
• about traincascade paremeters, samples, and other...
• what is the difference of Mat and Iplimage

● Commentator   × 1

• can't imread or imwrite in python

● Enlightened   × 1

• surf descriptor accepts only grayscale images?

● Critic   × 1

• Custom HOGDetector using CvSVM and HOG features.

● Teacher   × 1

• POSTIVE SAMPLE 200 & NEG 500

● Editor   × 1

• Does cv::gpu::HOGDescriptor::computeConfidence produce scaled (Platt) probabilities?

● Supporter   × 1

• How to find the two most dominant colors in an image?

● Scholar   × 1

• cvSetMouseCallback function pointer WinForms

● Student   × 1

• Traincascade link problem?

● Good Question   × 10

• NO QUESTION - Suggestions concerning this question & answer area
• [GUIDE] - A beginners guide to the Q&A forum (first steps to take)
• SVM bias on weights of positives and negatives
• What is the average training time needed for LBP object detector to reach a next stage?
• [REMARK] please stop reporting people as spam bots :)
• [ATTENTION] Regarding topics and answers not appearing right away, but requesting moderation
• [ANNOUNCEMENT] Welcome back to the OpenCV Q&A forum 2.0!
• OpenCV 3 doxygen documentation still very counter intuitive
• The best wishes topic! - Let us celebrate!
• NOTICE: github repo change location

● Civic Duty   × 1

● Great Question   × 2

• OpenCV 3 doxygen documentation still very counter intuitive
• NO QUESTION - Suggestions concerning this question & answer area