ImgPatchVectorizer (DMLab Library API for 0.0.4-SNAPSHOT)

java.lang.Object
- edu.gsu.cs.dmlab.imageproc.ImgPatchVectorizer

All Implemented Interfaces:

IImgPatchVectorizer
```
public class ImgPatchVectorizer
extends Object
implements IImgPatchVectorizer
```
This class extracts a set of column vectors from the input matrices. It is assumed that each new matrix in the array of matrices is another parameter at the same position. Therefore, each position 1,1 will be concatenated first, then 2,2 and so forth until the first patch is done. Then the patch is moved from having its upper left hand corner at 1,1 to having it at 1+step,1, repeating this until the bottom of the are is reached. Then the patches starts at the top again at 1,1+step, and so forth.

Author:

Dustin Kempton, Data Mining Lab, Georgia State University

Constructor Summary

Constructors
Constructor Description

ImgPatchVectorizer(int step, int patchSize)
Constructor constructs a new ImgPatchVectorizer with the given step size.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`smile.math.matrix.DenseMatrix`	`vectorize(smile.math.matrix.DenseMatrix[] imageDims)`	Creates column vectors of the patches of a patch size from each of the passed in image dimensions.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - ImgPatchVectorizer
```
public ImgPatchVectorizer(int step,
                          int patchSize)
```
    Constructor constructs a new ImgPatchVectorizer with the given step size.
    
    Parameters:
    
    step - The step size of the image patches when vectorizing.
    
    patchSize - The size of the patches to extract from the image.
- Method Detail
  - vectorize
```
public smile.math.matrix.DenseMatrix vectorize(smile.math.matrix.DenseMatrix[] imageDims)
```
    Description copied from interface: IImgPatchVectorizer
    
    Creates column vectors of the patches of a patch size from each of the passed in image dimensions. After each patch vectorization the patch is advanced by a step size and the process is repeated.
    
    Specified by:
    
    vectorize in interface IImgPatchVectorizer
    
    Parameters:
    
    imageDims - The set of image dimensions to vectorize patches from.
    
    Returns:
    
    The set of vectorized patches in in column major order.