On Reducing the Number of Visual Words in the Bag-of-Features Representation

04/14/2016
by   Giuseppe Amato, et al.
0

A new class of applications based on visual search engines are emerging, especially on smart-phones that have evolved into powerful tools for processing images and videos. The state-of-the-art algorithms for large visual content recognition and content based similarity search today use the "Bag of Features" (BoF) or "Bag of Words" (BoW) approach. The idea, borrowed from text retrieval, enables the use of inverted files. A very well known issue with this approach is that the query images, as well as the stored data, are described with thousands of words. This poses obvious efficiency problems when using inverted files to perform efficient image matching. In this paper, we propose and compare various techniques to reduce the number of words describing an image to improve efficiency and we study the effects of this reduction on effectiveness in landmark recognition and retrieval scenarios. We show that very relevant improvement in performance are achievable still preserving the advantages of the BoF base approach.

READ FULL TEXT

page 1

page 2

page 3

page 4

research
10/17/2022

Bridging the Gap between Local Semantic Concepts and Bag of Visual Words for Natural Scene Image Retrieval

This paper addresses the problem of semantic-based image retrieval of na...
research
05/19/2015

Image Reconstruction from Bag-of-Visual-Words

The objective of this work is to reconstruct an original image from Bag-...
research
12/28/2013

Stopping Rules for Bag-of-Words Image Search and Its Application in Appearance-Based Localization

We propose a technique to improve the search efficiency of the bag-of-wo...
research
06/14/2011

Nested Graph Words for Object Recognition

In this paper, we propose a new, scalable approach for the task of objec...
research
08/08/2012

A Survey of Recent View-based 3D Model Retrieval Methods

Extensive research efforts have been dedicated to 3D model retrieval in ...
research
03/04/2019

Automatic Handgun Detection in X-ray Images using Bag of Words Model with Selective Search

Baggage inspection systems using X-ray screening are crucial for securit...
research
05/25/2023

Automatic Extraction of Time-windowed ROS Computation Graphs from ROS Bag Files

Robotic systems react to different environmental stimuli, potentially re...

Please sign up or login with your details

Forgot password? Click here to reset