Skip to main content

All Questions

1 vote
1 answer
2k views

Rotated object detection by Viola jones Algorithm

In my project I need to detect rotated and non-rotated faces in real time. I read original articles and try to use common implementation in matlab and openCV. And as I understood Haar features are not ...
1 vote
2 answers
6k views

Using SURF algorithm to match objects on MATLAB

I am trying to find the difference between two images, using Matlab. The classic built in function that Matlab provides for this is because the two images don't have the same dimensions (The objects ...
1 vote
3 answers
2k views

Training own classifiers using trainCascadeObjectDetector for face detection

I want to train a cascade classifier to face detect. I read this page. But I wont use trainingImageLabeler app, because I already have face and nonface database sized 24x24. How I use ...
1 vote
1 answer
4k views

Train Cascade Object Detector example in MATLAB

I am trying to use the example from here to detect a stop sign. But when I change the image to search for stop signs in there are a huge number of false positives. Am I doing something wrong?
2 votes
0 answers
5k views

Train a Cascade Object Detector in MATLAB

I am trying to train a cascade object detector in MATLAB using the built in functionality from the Computer Vision Toolbox. I’ve taken 500 photo’s of the sole of my shoe. Every photo is taken from ...
0 votes
1 answer
2k views

Object Detection Algorithms

I'm a complete beginner to object recognition. I need to identify and count how many of a certain type of Lego, in a picture full of different pieces of Lego, using MATLAB. The pieces of Lego I need ...
1 vote
2 answers
5k views

Vehicle detection in matlab [closed]

I am new to matlab and computer vision. I used the code given in the link to detect cars. But the problem is the shadow is also being detected and tracked. Can anyone tell me how to modify the code so ...
1 vote
0 answers
1k views

extracting audio and video from video file

I tried the following code in MATLAB R2013b ...
9 votes
3 answers
4k views

Is it possible to convert from 2D to 3D form?

I have captured car positions at different frames from the video. Suppose car's(e.g.left side car which is coming towards us in the images) centroid at video frame1 is P(x1,y1) and Q(x2,y2) at video ...
2 votes
2 answers
5k views

Object Recognition using bag of features using matlab [closed]

I want to write a MATLAB program for simple object recognition using bag of features. In short, I want to first extract the features from an image, create a visual library using those features, then ...
2 votes
1 answer
6k views

Hand detection in matlab

I am beginner and I want a help to know how to detect hand in Matlab. First, I need code which detects skin and then draw a rectangle around a region so it show to me face and hand. When I try to ...
1 vote
1 answer
336 views

create a Calibration Board [closed]

How could I know the best size of the board for my camera? My camera is Canon D-100 It's 18 megapix I have created a board consist of 14*10 squares the length of each square is 7*7cm I need to know ...
2 votes
2 answers
2k views

Training custom classifiers using trainCascadeObjectDetector

Is there any good documentation about training your own classifiers(with examples included) different from this one provided by MathWorks. Thanks in Advance
0 votes
1 answer
177 views

trainCascadeObjectDetector seems to be missing from MATLAB R2012b

I wish to use trainCascadeObjectDetector to train on new objects (other than faces); I have the Computer Vision Toolkit installed; but this function trainCascadeObjectDetector seems to be missing from ...
2 votes
2 answers
4k views

Is there any good book regarding 3D reconstruction from 2D images? I prefer to work in MATLAB

I am working on a project regarding 3D reconstruction of 2D images. I have understanding of finding and Mathcing the keypoints and its algorithms; but i am not able to replicate the theory in MATLAB ...

15 30 50 per page