I have a set of image files, and I want to reduce the number of colors of them to 64. How can I do this with OpenCV? I need this so I can work with a 64-sized image histogram. I'm implementing CB...

I have a bunch of poor quality photos that I extracted from a pdf. Somebody I know has the good quality photo's somewhere on her computer(Mac), but it's my understanding that it will be difficult t...

I am working on SIFT features and 'm using a visual bag-of-words approach to make a vocabulary first and then do the matching. I've found similar questions but didn't find the appropriate answer. S...

My understanding: SIFT descriptor uses the histogram of orientation gradient calculated from 16x16 neighbourhood pixels. 16x16 area in a large image can be a very small area, e.g. 1/10 of one hair ...

I need to search a huge image database to find possible duplicate using pHash assuming those image records have the hash code generated using the pHash. Now I have to compare a new image and I ha...

I am accessing 10 images from a folder "c1" and I have query image. I have implemented code for loading images in cell array and then I'm calculating histogram intersection between query image and ...

I have large collecton of card images, and one photo of particular card. What tools can I use to find which image of collection is most similar to mine? Here's collection sample: Abundance Aggre...

I'd like to get the most common color from an image. I use Java and I want to have the most predominant color. Are there any cbir java library to make this? Thanks

Project: Content Based Image Retrieval - Semi-supervised (manual tagging is done on images while training) Description I have 1000000 images in the database. The training is manual (supervised) -...

There's a lot of different algorithms for computing the similarity between two images, but I can't find anything on how you would store this information in a database such that you can find similar...

What's a fast way to sort a given set of images by their similarity to each other. At the moment I have a system that does histogram analysis between two images, but this is a very expensiv...