FastIntegralImage (Fiji Javadocs 0-SNAPSHOT API)

java.lang.Object
- ini.trakem2.imaging.FastIntegralImage

```
public final class FastIntegralImage
extends Object
```
Written following the code in ImgLib1's IntegralImage2 and ScaleAreaAveraging2d, authored by Stephan Preibisch and Albert Cardona.

Author:

Albert Cardona

Constructor Summary

Constructors
Constructor and Description

FastIntegralImage()

Constructors
Constructor and Description
`FastIntegralImage()`

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static double[]`	`doubleIntegralImage(byte[] b, int w, int h)` Returns an image of @{param w}+1, @{param y}+1, where the first row and the first column are zeros, and the rest contain the sum of the area from 0,0 to that pixel in `b`.
`static double[]`	`doubleIntegralImage(float[] b, int w, int h)` Returns an image of @{param w}+1, @{param y}+1, where the first row and the first column are zeros, and the rest contain the sum of the area from 0,0 to that pixel in `b`.
`static long[]`	`longIntegralImage(byte[] b, int w, int h)` Returns an image of @{param w}+1, @{param y}+1, where the first row and the first column are zeros, and the rest contain the sum of the area from 0,0 to that pixel in `b`.
`static long[]`	`longIntegralImage(short[] b, int w, int h)` Returns an image of @{param w}+1, @{param y}+1, where the first row and the first column are zeros, and the rest contain the sum of the area from 0,0 to that pixel in `b`.
`static void`	`main(String[] args)` For testing.
`static byte[]`	`scaleAreaAverage(double[] f, int fw, int fh, int tw, int th)`
`static byte[]`	`scaleAreaAverage(long[] f, int fw, int fh, int tw, int th)`
`static void`	`test(String image_file_path)`

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

- Constructor Detail
  - FastIntegralImage
```
public FastIntegralImage()
```
- Method Detail
  - doubleIntegralImage
```
public static final double[] doubleIntegralImage(byte[] b,
                                                 int w,
                                                 int h)
```
    Returns an image of @{param w}+1, @{param y}+1, where the first row and the first column are zeros, and the rest contain the sum of the area from 0,0 to that pixel in b.
    
    Parameters:
    
    b -
    
    w -
    
    h -
    
    Returns:
    
    a double[] representing the integral image, with the first row and the first column with zeros.
  - doubleIntegralImage
```
public static final double[] doubleIntegralImage(float[] b,
                                                 int w,
                                                 int h)
```
    Returns an image of @{param w}+1, @{param y}+1, where the first row and the first column are zeros, and the rest contain the sum of the area from 0,0 to that pixel in b.
    
    Parameters:
    
    b -
    
    w -
    
    h -
    
    Returns:
    
    a double[] representing the integral image, with the first row and the first column with zeros.
  - longIntegralImage
```
public static final long[] longIntegralImage(byte[] b,
                                             int w,
                                             int h)
```
    Returns an image of @{param w}+1, @{param y}+1, where the first row and the first column are zeros, and the rest contain the sum of the area from 0,0 to that pixel in b.
    
    Parameters:
    
    b -
    
    w -
    
    h -
    
    Returns:
    
    a float[] representing the integral image, with the first row and the first column with zeros.
  - longIntegralImage
```
public static final long[] longIntegralImage(short[] b,
                                             int w,
                                             int h)
```
    Returns an image of @{param w}+1, @{param y}+1, where the first row and the first column are zeros, and the rest contain the sum of the area from 0,0 to that pixel in b.
    
    Parameters:
    
    b -
    
    w -
    
    h -
    
    Returns:
    
    a short[] representing the integral image, with the first row and the first column with zeros.
  - test
```
public static final void test(String image_file_path)
```
  - main
```
public static final void main(String[] args)
```
    For testing.
  - scaleAreaAverage
```
public static final byte[] scaleAreaAverage(double[] f,
                                            int fw,
                                            int fh,
                                            int tw,
                                            int th)
```
    Parameters:
    
    f - The pixels of the integral image.
    
    fw - The width of the integral image (source image width + 1)
    
    fh - The height of the integral image (source image height + 1)
    
    tw - The target width to scale to.
    
    th - The target height to scale to.
    
    Returns:
    
    The pixels of the scaled image.
  - scaleAreaAverage
```
public static final byte[] scaleAreaAverage(long[] f,
                                            int fw,
                                            int fh,
                                            int tw,
                                            int th)
```
    Parameters:
    
    f - The pixels of the integral image.
    
    fw - The width of the integral image (source image width + 1)
    
    fh - The height of the integral image (source image height + 1)
    
    tw - The target width to scale to.
    
    th - The target height to scale to.
    
    Returns:
    
    The pixels of the scaled image.

Class FastIntegralImage

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

FastIntegralImage

Method Detail

doubleIntegralImage

doubleIntegralImage

longIntegralImage

longIntegralImage

test

main

scaleAreaAverage

scaleAreaAverage