boofcv.alg.filter.convolve

Class ConvolveImageNoBorderSparse

java.lang.Object

boofcv.alg.filter.convolve.ConvolveImageNoBorderSparse

public class ConvolveImageNoBorderSparse
extends java.lang.Object

Performs a convolution around a single pixel only. The whole kernel must be contained inside the image, border cases are not handled. Sparse convolutions are useful when sub-sampling an image.

Constructor Summary

Constructors

Constructor and Description
ConvolveImageNoBorderSparse()

Method Summary

Modifier and Type	Method and Description
static float	convolve(Kernel1D_F32 horizontal, Kernel1D_F32 vertical, GrayF32 input, int c_x, int c_y, float[] storage) Convolves a 1D kernels around the specified pixel in the horizontal and vertical direction.
static float	convolve(Kernel1D_I32 horizontal, Kernel1D_I32 vertical, GrayS16 input, int c_x, int c_y, int[] storage) Convolves a 1D kernels around the specified pixel in the horizontal and vertical direction.
static float	convolve(Kernel1D_I32 horizontal, Kernel1D_I32 vertical, GrayS16 input, int c_x, int c_y, int[] storage, int divisorHorizontal, int divisorVertical) Convolves a 1D kernels around the specified pixel in the horizontal and vertical direction.
static float	convolve(Kernel1D_I32 horizontal, Kernel1D_I32 vertical, GrayU8 input, int c_x, int c_y, int[] storage) Convolves a 1D kernels around the specified pixel in the horizontal and vertical direction.
static float	convolve(Kernel1D_I32 horizontal, Kernel1D_I32 vertical, GrayU8 input, int c_x, int c_y, int[] storage, int divisorHorizontal, int divisorVertical) Convolves a 1D kernels around the specified pixel in the horizontal and vertical direction.

Methods inherited from class java.lang.Object

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

Constructor Detail

ConvolveImageNoBorderSparse

public ConvolveImageNoBorderSparse()

Method Detail

convolve

public static float convolve(Kernel1D_F32 horizontal,
                             Kernel1D_F32 vertical,
                             GrayF32 input,
                             int c_x,
                             int c_y,
                             float[] storage)

Convolves a 1D kernels around the specified pixel in the horizontal and vertical direction.

Parameters:

horizontal - Horizontal convolution kernel. Not modified.

vertical - Vertical convolution kernel. Not modified.

input - Image that is being convolved. Not modified.

c_x - Pixel the convolution is centered around. x-coordinate.

c_y - Pixel the convolution is centered around. y-coordinate.

storage - Must be as long as the kernel's width.

Returns:

The pixel's value after the convolution

convolve

public static float convolve(Kernel1D_I32 horizontal,
                             Kernel1D_I32 vertical,
                             GrayU8 input,
                             int c_x,
                             int c_y,
                             int[] storage)

Convolves a 1D kernels around the specified pixel in the horizontal and vertical direction.

Parameters:

horizontal - Horizontal convolution kernel. Not modified.

vertical - Vertical convolution kernel. Not modified.

input - Image that is being convolved. Not modified.

c_x - Pixel the convolution is centered around. x-coordinate.

c_y - Pixel the convolution is centered around. y-coordinate.

storage - Must be as long as the kernel's width.

Returns:

The pixel's value after the convolution

convolve

public static float convolve(Kernel1D_I32 horizontal,
                             Kernel1D_I32 vertical,
                             GrayS16 input,
                             int c_x,
                             int c_y,
                             int[] storage)

Convolves a 1D kernels around the specified pixel in the horizontal and vertical direction.

Parameters:

horizontal - Horizontal convolution kernel. Not modified.

vertical - Vertical convolution kernel. Not modified.

input - Image that is being convolved. Not modified.

c_x - Pixel the convolution is centered around. x-coordinate.

c_y - Pixel the convolution is centered around. y-coordinate.

storage - Must be as long as the kernel's width.

Returns:

The pixel's value after the convolution

convolve

public static float convolve(Kernel1D_I32 horizontal,
                             Kernel1D_I32 vertical,
                             GrayU8 input,
                             int c_x,
                             int c_y,
                             int[] storage,
                             int divisorHorizontal,
                             int divisorVertical)

Convolves a 1D kernels around the specified pixel in the horizontal and vertical direction. The convolution sum is divided by the specified divisors in the horizontal and vertical direction.

Parameters:

horizontal - Horizontal convolution kernel. Not modified.

vertical - Vertical convolution kernel. Not modified.

input - Image that is being convolved. Not modified.

c_x - Pixel the convolution is centered around. x-coordinate.

c_y - Pixel the convolution is centered around. y-coordinate.

storage - Must be as long as the kernel's width.

divisorHorizontal - Divisor for horizontal convolution.

divisorVertical - Divisor for vertical convolution.

Returns:

The pixel's value after the convolution

convolve

public static float convolve(Kernel1D_I32 horizontal,
                             Kernel1D_I32 vertical,
                             GrayS16 input,
                             int c_x,
                             int c_y,
                             int[] storage,
                             int divisorHorizontal,
                             int divisorVertical)

Convolves a 1D kernels around the specified pixel in the horizontal and vertical direction. The convolution sum is divided by the specified divisors in the horizontal and vertical direction.

Parameters:

horizontal - Horizontal convolution kernel. Not modified.

vertical - Vertical convolution kernel. Not modified.

input - Image that is being convolved. Not modified.

c_x - Pixel the convolution is centered around. x-coordinate.

c_y - Pixel the convolution is centered around. y-coordinate.

storage - Must be as long as the kernel's width.

divisorHorizontal - Divisor for horizontal convolution.

divisorVertical - Divisor for vertical convolution.

Returns:

The pixel's value after the convolution