boofcv.alg.misc

Class GImageMiscOps

java.lang.Object

boofcv.alg.misc.GImageMiscOps

public class GImageMiscOps
extends Object

Generalized version of ImageMiscOps. Type checking is performed at runtime instead of at compile type.

Author:

Peter Abeles

Constructor Summary

Constructors

Constructor and Description
GImageMiscOps()

Method Summary

Methods

Modifier and Type	Method and Description
static void	addGaussian(ImageBase input, Random rand, double sigma, double lowerBound, double upperBound) Adds Gaussian/normal i.i.d noise to each pixel in the image.
static void	addUniform(ImageBase input, Random rand, double min, double max) Adds uniform i.i.d noise to each pixel in the image.
static void	copy(int srcX, int srcY, int dstX, int dstY, int width, int height, ImageBase input, ImageBase output) Copies a rectangular region from one image into another. output[dstX:(dstX+width) , dstY:(dstY+height-1)] = input[srcX:(srcX+width) , srcY:(srcY+height-1)]
static void	fill(ImageBase input, double value) Computes the mean of the absolute value of the difference between the two images.
static void	fillBorder(ImageBase input, double value, int radius) Fills the outside border with the specified value
static void	fillGaussian(ImageBase input, Random rand, double mean, double sigma, double lowerBound, double upperBound) Sets each value in the image to a value drawn from a Gaussian distribution.
static void	fillRectangle(ImageBase input, double value, int x0, int y0, int width, int height) Draws a filled rectangle that is aligned along the image axis inside the image.
static void	fillUniform(ImageBase input, Random rand, double min, double max) Sets each value in the image to a value drawn from an uniform distribution that has a range of min <= X < max.
static void	flipVertical(ImageBase img) Flips the image from top to bottom

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

GImageMiscOps

public GImageMiscOps()

Method Detail

copy

public static void copy(int srcX,
        int srcY,
        int dstX,
        int dstY,
        int width,
        int height,
        ImageBase input,
        ImageBase output)

Copies a rectangular region from one image into another.
output[dstX:(dstX+width) , dstY:(dstY+height-1)] = input[srcX:(srcX+width) , srcY:(srcY+height-1)]

Parameters:

srcX - x-coordinate of corner in input image

srcY - y-coordinate of corner in input image

dstX - x-coordinate of corner in output image

dstY - y-coordinate of corner in output image

width - Width of region to be copied

height - Height of region to be copied

input - Input image

output - output image

fill

public static void fill(ImageBase input,
        double value)

Computes the mean of the absolute value of the difference between the two images.

Parameters:

input - Input image. Not modified.

value - fill value

fillBorder

public static void fillBorder(ImageBase input,
              double value,
              int radius)

Fills the outside border with the specified value

Parameters:

input - An image.

value - The value that the image is being filled with.

radius - Border width.

fillRectangle

public static void fillRectangle(ImageBase input,
                 double value,
                 int x0,
                 int y0,
                 int width,
                 int height)

Draws a filled rectangle that is aligned along the image axis inside the image.

Parameters:

input - Image the rectangle is drawn in. Modified

value - Value of the rectangle

x0 - Top left x-coordinate

y0 - Top left y-coordinate

width - Rectangle width

height - Rectangle height

fillGaussian

public static void fillGaussian(ImageBase input,
                Random rand,
                double mean,
                double sigma,
                double lowerBound,
                double upperBound)

Sets each value in the image to a value drawn from a Gaussian distribution. A user specified lower and upper bound is provided to ensure that the values are within a legal range. A drawn value outside the allowed range will be set to the closest bound.

Parameters:

input - Input image. Modified.

rand - Random number generator

mean - Distribution's mean.

sigma - Distribution's standard deviation.

lowerBound - Lower bound of value clip

upperBound - Upper bound of value clip

fillUniform

public static void fillUniform(ImageBase input,
               Random rand,
               double min,
               double max)

Sets each value in the image to a value drawn from an uniform distribution that has a range of min <= X < max.

Parameters:

input - Image which is to be filled. Modified,

rand - Random number generator

min - Minimum value of the distribution

max - Maximum value of the distribution

addGaussian

public static void addGaussian(ImageBase input,
               Random rand,
               double sigma,
               double lowerBound,
               double upperBound)

Adds Gaussian/normal i.i.d noise to each pixel in the image. If a value exceeds the specified it will be set to the closest bound.

Parameters:

input - Input image. Modified.

rand - Random number generator.

sigma - Distributions standard deviation.

lowerBound - Allowed lower bound

upperBound - Allowed upper bound

addUniform

public static void addUniform(ImageBase input,
              Random rand,
              double min,
              double max)

Adds uniform i.i.d noise to each pixel in the image. Noise range is min <= X < max.

flipVertical

public static void flipVertical(ImageBase img)

Flips the image from top to bottom