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Questions tagged [mean-shift]

At the high level, we can specify Mean Shift as follows :

  1. Fix a window around each data point.
  2. Compute the mean of data within the window.
  3. Shift the window to the mean and repeat till convergence.

Read THIS LINK for more

54 questions
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Running coroutine with async in While loop Python

I am writing an inference system for a underwater vehicle and I've been told to look into async to improve the object tracking. The idea is to have a tflite object detection model that detects object and returns a box/coordinates for each object it…
Luka Jozić
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np.reshape(): Converting an image into a feature array based on rgb intensities

I am trying to segment a colour image using the Mean-Shift algorithm using sklearn. I have the following code: import numpy as np from sklearn.cluster import MeanShift, estimate_bandwidth from sklearn.datasets.samples_generator import…
ceno980
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Are the labels-output of cluster algorithms ordered in a certain order? (python, scikit learn)

I'm using Shift-means clustering (https://scikit-learn.org/stable/modules/clustering.html#mean-shift) in which the labels of clusters are obtained from this source:…
Jorge Alexis Castillo Seplveda
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Python mean shift clustering of complex-number numpy array

I’ve inherited some code that was written about a year ago, so I guess back then it was using numpy 1.13 (now v1.15.2), scipy 1.00rc (now v1.1.0), and sklearn 0.19 (now v.0.20.0). It implements Fisher’s LDA to reduce an n-dimensional space to an…
Jens
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Scikit learn: Applying Mean Shift on a multi-dimensional dataset

I have a dataset which has 14 different features/columns and 4328 rows, values of which I have then processed and converted into a NumPy array of shape (4328, 14). I have then applied Mean Shift on this NumPy array to train my model, which…
Manas Chaturvedi
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Why does OpenCV's Meanshift tracking algorithm only track object the first time?

I am running the meanshift tracking algorithm to track objects in a live stream(with webcam) in OpenCV however the algorithm only works the first time it is run and does not work when I run the program again unless I restart my computer. Why is this…
Vaderstalk
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MeanShift formula understanding

I'm implementing MeanShift algorithm for object tracking, using ideas from here: http://www.cse.psu.edu/~rtc12/CSE598C/meanShiftColor.pdf Now I have backprojection image for consequent frame. Each pixel in such image marks the probability of…
olha
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how are clusters typically retrieved from Mean Shift Clustering?

I've currently implemented mean shift clustering in python. I used matplotlib and I get the results I'm expecting on clustering on random input. However, I'm confused as to how one normally reduces the cluster for each point into a few…
Krupip
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How to use calcBackProject in opencv?

What's the meaning of the first and fourth parameters? Can I cut an Image into 9 pieces and then use it's histgram as the parameter hist in the picture and the whole image as the first parameter in the picture?
L.bian
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MATLAB: How can I avoid iamresize and VideoReader if they are taking too much time?

I am doing mean shift color based image segmentation on video frames. Here is my code: while hasFrame(v) if k == 1 s(k).cdata = readFrame(v); a = s(k).cdata; I = imresize(a,[50,50]); [means, Ims, Nms] = Ms(I,bw);…
junior j
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How to print samples/observations/rows of any one cluster using scikit learn/pandas/python?

Very basic question: How do I print the observations attributed to any one cluster? data = pd.read_csv('my_file.csv') X = data[['Var1','Var2','Var3']] ms = MeanShift() ms.fit(X) labels = ms.labels_ cluster_centers = ms.cluster_centers_ I'd just…
Liam Hanninen
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'numpy.float64' object is not iterable - meanshift clustering

python newbie here. I am trying to run this code but I get the error message that the object is not iterable. Would appreciate some advice on what I am doing wrong. Thanks. import matplotlib.pyplot as plt import numpy as np import pandas as…
noiivice
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OpenCV Android Poor results with camshift tracking

I am trying to implement an object tracking application for Android using the camshift method. So far, i succeeded in implementing the camshift method and running it on my android tablet. Unfortunately, it does not work as intended... When I start…
Mischa
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How to see cluster member in mean shift

I have managed to generate a cluster area using the mean shift clustering method in python. The data was taken from a CSV file around 7000 longitude and latitude data. The code and result are presented below. The problem is how can I generate the…
Kenken
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How does camshift tracking work compared to meanshift

I know, how meanshift works for tracking objects: Histogram of region of interest Backprojection image calculating center of mass iterativ adaption of the ROI's center to the center of mass But how can the camshift algorithm solve the problem of…
black
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