Rank: 230 based on 477 downloads (last 30 days) and 6 files submitted
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Konda Reddy Mopuri

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IISc Banglore

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31 Oct 2014 compute bag of visual word representation for an image computes BOV/BOF/BOW representation for an image. Codebook and image features are user inputs. Author: Konda Reddy Mopuri bov, bof, bow, bag of features, bag of words, bag of visual words 173 10
  • 4.5
4.5 | 3 ratings
17 Mar 2014 Inverted-File-Structure A function to Create an Inverted File Structure for an image database for large scale retrieval Author: Konda Reddy Mopuri inverted file systems, ifs, inverted file structu..., bow, bov, bag of visual words 24 0
31 Jan 2014 Screenshot Display SIFT in 2D This function displays the 128 dimensional un-normalized SIFT data in 2D using PCA. Author: Konda Reddy Mopuri visualize sift, pca, display sift, eigen vectors, plot sift, sift in 2d 28 1
  • 1.0
1.0 | 1 rating
20 Nov 2013 Color Histogram of an RGB Image computes color histogram of an RGB image, number of bins is user input and is same for R,G and B. Author: Konda Reddy Mopuri color histogram, histogram of an image, rgbhist, image processing, computer vision 210 6
  • 5.0
5.0 | 2 ratings
22 Oct 2013 Screenshot Entropy based Saliency detection This function finds the salient regions in a video using entropy measurement. Author: Konda Reddy Mopuri entropy, saliency, salient regions, kadir, gilles, saliency in videos 33 0
  • 2.0
2.0 | 1 rating
Comments and Ratings by Konda Reddy Mopuri View all
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02 Jun 2014 compute bag of visual word representation for an image computes BOV/BOF/BOW representation for an image. Codebook and image features are user inputs. Author: Konda Reddy Mopuri

@Lakshmi: I don't know why you get a 2D matrix as SIFT feature, in general it should be a single 128D vector at each keypoint. But, even if you get a 2D matrix as your feature, you may go ahead after column stacking it.

21 Jan 2014 Color Histogram of an RGB Image computes color histogram of an RGB image, number of bins is user input and is same for R,G and B. Author: Konda Reddy Mopuri

@vijaya: If i understood your issue correctly, you are trying to cluster the rgb histograms. Which can be done using different clustering approaches. You can look from the simple K-means clustering. Many of clustering approaches are there in the literature like meanshift based, spectral etc. Most of them are implemented in MATLAB and you can get the codes in file-exchange.

21 Jan 2014 compute bag of visual word representation for an image computes BOV/BOF/BOW representation for an image. Codebook and image features are user inputs. Author: Konda Reddy Mopuri

@hameed: BoW representation is widely used along with many of its improved variants for classification, retrieval kind of applications. You may get some overview here
http://en.wikipedia.org/wiki/Bag-of-words_model_in_computer_vision
thank you !!

03 Jan 2014 compute bag of visual word representation for an image computes BOV/BOF/BOW representation for an image. Codebook and image features are user inputs. Author: Konda Reddy Mopuri

@asmae:
Hi, you said that you obtained the Vwords as the output of kmeans algorithms, actually what is the input data given to the kmeans for clustering ?? that itself is the features. For example it can be the SIFT features extracted from an image.

03 Jan 2014 compute bag of visual word representation for an image computes BOV/BOF/BOW representation for an image. Codebook and image features are user inputs. Author: Konda Reddy Mopuri

@hamed: Welcome !!

Comments and Ratings on Konda Reddy Mopuri's Files View all
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03 Sep 2014 compute bag of visual word representation for an image computes BOV/BOF/BOW representation for an image. Codebook and image features are user inputs. Author: Konda Reddy Mopuri sapna sapna

i want to use sift features for human action recognition. i have multiple human in a single frame.SIFT extracted from each frame is kx128 size...how to create bag of visual words from these features??

03 Jul 2014 Display SIFT in 2D This function displays the 128 dimensional un-normalized SIFT data in 2D using PCA. Author: Konda Reddy Mopuri Arunima c.v.

Iam a beginner of sift study...don't kow much about it...may i know sift features of which image is considered here

02 Jun 2014 compute bag of visual word representation for an image computes BOV/BOF/BOW representation for an image. Codebook and image features are user inputs. Author: Konda Reddy Mopuri Konda Reddy Mopuri

@Lakshmi: I don't know why you get a 2D matrix as SIFT feature, in general it should be a single 128D vector at each keypoint. But, even if you get a 2D matrix as your feature, you may go ahead after column stacking it.

26 May 2014 compute bag of visual word representation for an image computes BOV/BOF/BOW representation for an image. Codebook and image features are user inputs. Author: Konda Reddy Mopuri Lakshmi

I want to generate BoVW from sift feature. I'm getting a 2d matrix as SIFT feature. Should i convert it into 1d for giving it as input to the BoVW?

17 Mar 2014 Entropy based Saliency detection This function finds the salient regions in a video using entropy measurement. Author: Konda Reddy Mopuri asqur

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