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1answer
40 views

Find pixel mapping matrix with minimum iterations

The Situation I am an electronics engineer and on a volunteer team that have built a prototype eye that has 200*200 sensors that are mapped to the optic nerve, the connection to the optic nerve is ...
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0answers
23 views

Ways of object recognition in computer vision

In the field of computer vision, we talk a lot about this process of feature detection-description-matching as a way of recognizing objects. But on the other hand, there's also talks about object ...
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0answers
62 views

Understanding the Baeza-Yates Régnier algorithm (multiple string matching, extended from Boyer-Moore)

First of all, excuse me if I write a lot, I tried to summarize my research so that everyone can understand. R. Baeza-Yates and M. Regnier published in 1993 a new algorithm for searching a two ...
3
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1answer
63 views

Extracting features for texture classification

I m a beginner in the field of pattern recognition and computer vision. I m working on a project right now to classify t-shirt patterns into three categories i.e. solids, stripes and checks. I have ...
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1answer
15 views

Training Error & Convergence to True Error

I Take some online class for Machine Learning. one of teacher say this sentence. if we have m data points, the training error converges to the true error as m → ∞. i thought, this sentence not ...
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1answer
29 views

VC Dimension Calculation for Intervals

As i See in ML Course a VC dimension calculation is very theoretical. What is the VC-dimension of intervals in R? The target function is specifieed by an interval, and labels any example positive ...
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3answers
152 views

Over-fitting Always Occurs?

i get stuck in one sentence in machine learning. i read tom Mitchel book on ML, and some other materials. if we have small training set, always over-fit can occurs? or is likely to occurs? i read ...
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1answer
40 views

Policy function π in Reinforcement learning unclear

I have one question about policy function in Reinforcement learning. in fact this function indicates which action should be done in each state? Or this function indicate for get the ...
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1answer
45 views

Neural Network Design Challenge

i'm studying for PHD Entrance Exam on Stanford. one of previous material exam designed very challenging. i want to design a NN for classifying following 2-class problem. 1) output should be -1 or ...
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1answer
62 views

What is the difference between symbol recognition, classification and identification?

I've just wondered if there is a difference between symbol recognition, classification and identification. What would you use when you have a hand-written symbol and you want to get the LaTeX code ...
2
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0answers
61 views

How can you use HMMs and ANNs for on-line handwriting recognition?

On-line handwriting recognition is the task of converting a series of $(x(t),y(t))$ coordinates to symbols and words. In contrast to off-line handwriting recognition, where you only have a bitmap of ...
2
votes
1answer
106 views

Method to recognize abstract objects such as hand-drawn objects?

My research is in the area of Document Image Analysis. To be specific, the topic of my thesis is to automatically recognize and index characters in a set of hand-drawn objects, e.g. given a volume of ...
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0answers
41 views

What level of maths do I need for artificial intelligence? [duplicate]

I want to learn maths for artificial intelligence. I heard that main areas of mathematics for AI are Multivariable Calculus, Linear Algebra, Probability and Statistics and Discrete Mathematics. But ...
3
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2answers
29 views

How do I apply patch sized features to larger images?

I've been trying to teach myself some machine learning, and I wanted to ask what seems a simple question, but I've not been able to find any resources that explain the next step. Let's say I am doing ...
2
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0answers
82 views

Methods for silhouette feature extraction

Let's suppose I have an image of a person and its corresponding background. Using OpenCV I can relatively easily get a silhouette of the person from the image. I am doing a project on human ...
0
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1answer
37 views

Are Algebraic types just the combination of case classes and pattern matching?

On this page describing the precursor to the Scala language - the pizza language - they refer to it having both case classes and pattern matching - and then imply that these taken together provide ...
2
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2answers
173 views

Object recognition - given an image, does it contain a particular 3D object of interest?

I have in mind a particular 3D object. Given an image taken by a camera, I want to check whether that image contains an instance of my object. For instance, let's say that the object is a bathroom ...
1
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1answer
37 views

Pattern bonding problem

Let $\Sigma = {1,2,3,4}$ . We say that symbol $\sigma $ bonds with symbol $\tau$ if $\sigma = \tau$ of $\sigma = \tau +1$ for even $\sigma$ and $\sigma = \tau -1$ for odd $\sigma$ . In other ...
5
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1answer
160 views

Automated lip-reading: inferring what someone is saying, based upon video of them speaking

Some humans can lip-read fairly well: by watching someone who is speaking, they can tell what the speaker is saying (even without hearing the speech). Has there been any work on building computer ...
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1answer
96 views

How does facial recognition work?

I'm interested in learning about how facial recognition works. I'm especially interested in the algorithms or approach that is used. What are the leading methods for facial recognition? Is there a ...
0
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1answer
91 views

Is developing an OCR considered a research project? [closed]

Is developing an optical character recognition system for an alphabet which has no previous ocr considered a reputable conference or journal worthy research project, given the fact that there are so ...
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1answer
56 views

How to train a clustering system based on multiple initial clustering results

I got a very hard automatically clustering problem with some training data (500 samples, each with roughly 5-50 classes and 10000-20000 data points in total). What I need to do is to cluster an input ...
2
votes
3answers
185 views

Handwritten character recognition as characters are being traced

I'm looking for an OCR technique (PCA or SVM or anything else) in a peculiar setting. I want to detect the motion of the finger so that if someone writes something in front of the camera in the air, I ...
2
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2answers
124 views

Unsupervised anomaly detection: assigning the clusters to normal and anomaly

Having a unsupervised algorithm done on a dataset (e.g. K-means), how can I determine which cluster is normal and which is anomalous (for 30 clusters, for example)? If the dataset contains normal ...
6
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3answers
3k views

Shannon's entropy for an image

Shannon's entropy [plog(1/p)] for an image is a probabilistic method for comparing two pixels or a group of pixels.Suppose an image with a matrix of 3x3 has pixel intensity values ...
3
votes
2answers
317 views

Difference between HSI and YCbCr for pattern recognition by color

I am doing a project on face detection in C#. I want to find the skin area by using skin color segmentation. For that purpose, I have to extract the skin area. I know I can use HSI or YCbCr, but what ...
2
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2answers
113 views

Speech vs Music classification

I want to determine which parts of an audio file contain speech respectively music. I hope someone has a made something like this or can tell me where to start. Can you please suggest some method or ...
2
votes
1answer
116 views

Pattern classification: what goes into the sample?

I am trying to compare the performance of a classification result with Bayes classifier, K-NN, Piece wise component analysis (PCA). I have doubts regarding the following (please excuse my lack of ...
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1answer
144 views

Issue in comparing classifiers for pattern recognition

I have designed a classifier M which recognizes gestures and classifies it under any category always. A gesture is classified based on the hamming distance between the sample time series y and the ...
11
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1answer
82 views

Methods to evaluate a system of written rules

I was trying to come up with a system that would evaluate bylaws for an organization as to determine their underlying logic. I think a first-order predicate system would work for representing the ...