I`m trying to write a simple program for person recognition using k-NN algorithm.I think this problem is a classic one, but I need some help. The k-NN classifier needs to compute some distances ,so my question is ,how to compare,or how to compute the distance between 2 images?(I mention that i have to use L2-norm as the metric distance) Thank you !
OPEN CV c++ person Recognition K-nn
115 Views Asked by Elneny At
1
There are 1 best solutions below
Related Questions in C++
- issue in my if statement to make comparison in my java program
- Interesting random PHP include issue
- Why do the random number crashes my Android app?
- Unique random character generator
- I made a for loop to swap two indiv char variables in a string
- List with random numbers in Haskell
- Randomly sample lines retaining commented header lines
- How do you generate specific random number?
- Randomizing values accounting for floating point resolution
- Python random use both state and seed?
Related Questions in IMAGE
- issue in my if statement to make comparison in my java program
- Interesting random PHP include issue
- Why do the random number crashes my Android app?
- Unique random character generator
- I made a for loop to swap two indiv char variables in a string
- List with random numbers in Haskell
- Randomly sample lines retaining commented header lines
- How do you generate specific random number?
- Randomizing values accounting for floating point resolution
- Python random use both state and seed?
Related Questions in OPENCV
- issue in my if statement to make comparison in my java program
- Interesting random PHP include issue
- Why do the random number crashes my Android app?
- Unique random character generator
- I made a for loop to swap two indiv char variables in a string
- List with random numbers in Haskell
- Randomly sample lines retaining commented header lines
- How do you generate specific random number?
- Randomizing values accounting for floating point resolution
- Python random use both state and seed?
Related Questions in DISTANCE
- issue in my if statement to make comparison in my java program
- Interesting random PHP include issue
- Why do the random number crashes my Android app?
- Unique random character generator
- I made a for loop to swap two indiv char variables in a string
- List with random numbers in Haskell
- Randomly sample lines retaining commented header lines
- How do you generate specific random number?
- Randomizing values accounting for floating point resolution
- Python random use both state and seed?
Related Questions in KNN
- issue in my if statement to make comparison in my java program
- Interesting random PHP include issue
- Why do the random number crashes my Android app?
- Unique random character generator
- I made a for loop to swap two indiv char variables in a string
- List with random numbers in Haskell
- Randomly sample lines retaining commented header lines
- How do you generate specific random number?
- Randomizing values accounting for floating point resolution
- Python random use both state and seed?
Trending Questions
- UIImageView Frame Doesn't Reflect Constraints
- Is it possible to use adb commands to click on a view by finding its ID?
- How to create a new web character symbol recognizable by html/javascript?
- Why isn't my CSS3 animation smooth in Google Chrome (but very smooth on other browsers)?
- Heap Gives Page Fault
- Connect ffmpeg to Visual Studio 2008
- Both Object- and ValueAnimator jumps when Duration is set above API LvL 24
- How to avoid default initialization of objects in std::vector?
- second argument of the command line arguments in a format other than char** argv or char* argv[]
- How to improve efficiency of algorithm which generates next lexicographic permutation?
- Navigating to the another actvity app getting crash in android
- How to read the particular message format in android and store in sqlite database?
- Resetting inventory status after order is cancelled
- Efficiently compute powers of X in SSE/AVX
- Insert into an external database using ajax and php : POST 500 (Internal Server Error)
Popular # Hahtags
Popular Questions
- How do I undo the most recent local commits in Git?
- How can I remove a specific item from an array in JavaScript?
- How do I delete a Git branch locally and remotely?
- Find all files containing a specific text (string) on Linux?
- How do I revert a Git repository to a previous commit?
- How do I create an HTML button that acts like a link?
- How do I check out a remote Git branch?
- How do I force "git pull" to overwrite local files?
- How do I list all files of a directory?
- How to check whether a string contains a substring in JavaScript?
- How do I redirect to another webpage?
- How can I iterate over rows in a Pandas DataFrame?
- How do I convert a String to an int in Java?
- Does Python have a string 'contains' substring method?
- How do I check if a string contains a specific word?
So, k-NN works like, you first need features, with some values. For example, if you have, say n number of features for an image, you'll make an n-dimensional vector out of those features. Something like: F(x1, x2, x3, x4,....xn), where x1, x2, x3...xn are the values for the features. Now, if you compute the features, convert them into vector form, then you can simple calculate the distance between those vectors by using the iconic distance formula. And once you calculate/store all the distances in a list/array, you sort it, and take out the k top values with the lowest distance, and those will be your calculated k nearest neighbors. Once again, feature extraction is something you're looking for.