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Questions tagged [haar-wavelet]

In mathematics, the Haar wavelet is a sequence of rescaled "square-shaped" functions which together form a wavelet family or basis. They are similar to techniques used in facial recognition.

In mathematics, the Haar wavelet is a sequence of rescaled "square-shaped" functions which together form a wavelet family or basis. Haar-like features are digital image features used in object recognition. They owe their name to their intuitive similarity with Haar wavelets and were used in the first real-time face detector.

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Any way to check whether a haar cascade was detected or not?

The function detectMultiScale() returns void, so it is not possible to check whether the the object was detected or not using that function I wish to pass the frame no., at which the object was detected, to a text file. I don't know how to do that…
Animesh Pandey
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SURF descriptor implementation

I want to generate SURF descriptor (a vector of length 64). In the original paper, here it says: The region is split up regularly into smaller 4*4 square sub-regions. For each sub-region, we compute Haar wavelet responses at 5*5 regularly spaced…
vancexu
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OpenCV: Pedestrian training data for lbp cascades

Where i can find training data or maybe complete lbp cascade for pedestrian detection? If there is a haarcascades, it should be and the training data which can be used to traine lbp cascades, i think.
victor1234
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OpenCV 2.4 CascadeClassified detectMultiScale arguments

I was looking at the objectdetect sample and tried it with a couple of body detection cascades(*haarcascade_fullbody/haarcascade_upperbody/haarcascade_lowerbody,haarcascade_mcs_upperbody*) on some footage I took with a camera of a pedestrian bridge.…
George Profenza
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Ear recognition and upper body haarcascade

I have made the face recognition program according to the Opencv documentation. I also wanted to find out the position of the ear but on using the Haarcascade provided for ear the compiler says that there is an Illegal character in the…
praxmon
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OpenCV 2.3.0 cascade classifier

I am trying to make a face detection software using OpenCV 2.3.0. While OpenCV 2.4 has the face recognizer class 2.3.0 is devoid of this feature. I checked the documentation and is specifies that the detectMultiScale function has the following…
praxmon
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steganography using DWT in python

I've been doing research on image steganography using DWT. here's my problem: i'm running a code in python and i already got the subbands coefficients of the cover image. but i don't know how to embed the secret image into the cover. A paper says…
Z98n
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Is the spectrogram displaying correct values?

I want to know whether the spectrogram posted below is a true representation of the given non-stationary signal. If it is a true representation, I have a number of questions regarding specific features in the plot... For 0->.25 on the horizontal…
rmaik
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How to Generate Haar Feature?

I don't understand how to generate haar like features in images using java. I am getting task to make a system of head detection using haar like features and evolving classification function as classifiers. Please help me.
user3724998
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How to make third level haar transformation on an image in matlab

I have problem how to make third level on an image in Matlab. I use this code: image=imread('image.jpeg'); wavename = 'haar'; [cA,cH,cV,cD] = dwt2(im2double(image),wavename); %first level [cAA,cAH,cAV,cAD] = dwt2(cA,wavename); % Recompute Wavelet…
Milena Bundeva
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About Haar Like Feature Equation

I want to know the Haar-Like Feature equation. That can prove any Edge Feature, Line Feature and Center-Surround Feature. Best Thank Chairat(Thailand)
zlatan14
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a multitone cosine wave with 4 freq. components shows only 3 peaks

I have four frequency components of non stationary signals defined as shown below in the code. When i tried to plot the frequency domain of these signals, i got a graph with only three frequency peaks as shown below in the image.?! kindly let me…
rmaik
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