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Questions tagged [cbir]

Content-based image retrieval is a method for retrieving images from databases by using the actual content of images. Given an input query image, images returned from the database are those that look visually similar to the query, or those that have similar features to the query.

Content-based image retrieval (CBIR), also known as query by image content (QBIC) and content-based visual information retrieval (CBVIR) is the application of computer vision techniques to the image retrieval problem, that is, the problem of searching for digital images in large databases. (see this survey1 for a recent scientific overview of the CBIR field). Content based image retrieval is opposed to concept based approaches. wikipedia

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Crashes when using CIDetector and other Core Image API's on background threads

I deleted my last question on this topic in order to research the problem further. I'm working on a content based image retrieval database that indexes the local photo album on iPhone. I've written filters and methods for feature extraction, but as…
Joey Carson
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Multidimensional indexing of images

I would like to know if there is a good way for indexing multidimensional objects (i.e. images). More precisely, I have a large collection of images on which I calculate n-dimensional feature vectors. There is a distance metric (i.e. L2-norm)…
smichak
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Image Comparisson using CBIR and OCR

Working on a project for Retrieving content from a given image and compare with other images in the repository and list out the matching images. what should be right approach to do it so that the search wont slowdown eventually. What I was planning…
Ranju
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Start point for study content based video search

I was involved in computer vision development several years, but have never worked with CBIR or video search. Could you advise me how to start? Articles, algorithms, open source engines (C++). I want to create video search engine, which can find the…
victor1234
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How do I implement k-means clustering in a CIBR system?

I'm trying to perform content-based image retrieval (CBIR) using k-means clustering. I use the PCA function princomp() with a feature vector length of 190. I have 500 test images in color taken from here. There's 5 categories in total. When I run my…
zero one
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Calculate precision and recall on WANG database

I have made an CBIR system in MATLAB and have used similarity measurement as euclidean distance. Using this for each query image I retrieve top 20 images. I have used WANG Dataset for testing my system. It contains 10 classes(like African people,…
CoderBoy
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SURF Descriptor and Matching for Multiple Image in Matlab

I'm working on Content based image retrieval project using matlab when I apply the function point=detectSURFFeatures(image) I get 83*1 surf point that has the following information: `Scale: [83x1 single] SignOfLaplacian: [83x1…
Ahmed Tarawneh
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Fixed Number of Keypoints for similar Image detection

I have a set of Images of more then 1000 pictures. For every Image I extract SURF descriptors. Now I'll add a query Image and want to try to find the most similar image in the image set. For perfomance and memory reasons I just extract for every…
PeterNL
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Extracting Image Attributes

I am doing a project in computer vision and I need some help. The objective of my project is to extract the attributes of any object - for example if I have a Nike running shoe, I should be able to figure out that it is a shoe in the first place,…
user3705926
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Detecting a specific (qualitative) color in video with OpenCV

So: I have this OpenCV program, which captures video from the camera, and displays it on two windows. One has no color detection; the other highlights certain specific colors (such as red). What I need is a way to figure out if the image, at a…
user2976493
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Object extraction from Images with python

I want to object extraction from Images. for example i want to count of human in a picture or find similar picture in great data base(like google example) or finding field of picture (Nature of Office or Home) and etc. did you know any python…
Vahid Kharazi
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How to optimize detection of duplicate Images using cv2 and Hash digest using python?

I have a working code to get the duplicate images using Python but it takes a lot of time to execute and determine duplicate images present anywhere in the folder hierarchy. I am using hash digest and per pixel color diff to check if two images are…
Manish Kumar
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How to do CBIR / Reverse image search system

I need to create a reverse image search engine. The idea is the same as Google Image, you put an image and the engine will return the most similar images. I did some research about content based image retrieval and found a process to achieve this…
Seltade
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Best way to find near duplicate images with dhash with or without loop for multiple images in a folder?

I've made an object to call in the main function, called HashSimilarity. It basically compares two images with the dhash method. This comparison is made with a for-loop to compare each image against the searched image. And I think this way is not a…
hanbb
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Search images by description python

Currently I'm looking for a method to search for an image with a description sentence (Or further, search it with a natural language description sentence). However, most of what I get in return is an image search with an image as input. Can someone…
Traistorm
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