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Showing content from http://www.arrayfire.org/docs/image_processing_2image_demo_8cpp-example.htm below:

ArrayFire: image_processing/image_demo.cpp

#include <stdio.h>

#include <cstdlib>

outr = rgb(span, span, 0);

outg = rgb(span, span, 1);

outb = rgb(span, span, 2);

}

static const float h_gauss[] = {

0.0318f, 0.0375f, 0.0397f, 0.0375f, 0.0318f, 0.0375f, 0.0443f,

0.0469f, 0.0443f, 0.0375f, 0.0397f, 0.0469f, 0.0495f, 0.0469f,

0.0397f, 0.0375f, 0.0443f, 0.0469f, 0.0443f, 0.0375f, 0.0318f,

0.0375f, 0.0397f, 0.0375f, 0.0318f,

};

static const float h_sobel[] = {-2.0, -1.0, 0.0, -1.0, 0.0, 1.0, 0.0, 1.0, 2.0};

static void img_test_demo() {

img_gray =

(ASSETS_DIR

,

false);

(ASSETS_DIR

,

) /

255.f;

rotatedImg =

(img_gray, Pi / 2,

) / 255.f;

thrs_img = (img_gray < 130.f).as(

);

channel_split(img_rgb, rr, gg, bb);

channel_split(hsv, hh, ss, vv);

while (!wnd.close()) {

wnd.grid(2, 4);

wnd(0, 0).image(img_rgb, "Input Image");

wnd(1, 0).image(rotatedImg, "Rotate");

wnd(0, 1).image(ss, "Saturation");

wnd(1, 1).image(bb, "Blue Channel");

wnd(0, 2).image(smt, "Smoothing");

wnd(1, 2).image(thrs_img, "Binary Thresholding");

wnd(0, 3).image(inorm, "Histogram Equalization");

wnd(1, 3).image(edge_det, "Edge Detection");

wnd.show();

}

}

int main(int argc, char** argv) {

int device = argc > 1 ? atoi(argv[1]) : 0;

try {

printf("** ArrayFire Image Demo **\n\n");

img_test_demo();

fprintf(stderr,

, e.

());

throw;

}

return 0;

}

Window object to render af::arrays.

A multi dimensional data container.

An ArrayFire exception class.

virtual const char * what() const

Returns an error message for the exception in a string format.

@ f32

32-bit floating point values

AFAPI array abs(const array &in)

C++ Interface to calculate the absolute value.

AFAPI void setDevice(const int device)

Sets the current device.

AFAPI array colorSpace(const array &image, const CSpace to, const CSpace from)

C++ Interface wrapper for colorspace conversion.

AFAPI array histEqual(const array &in, const array &hist)

C++ Interface for histogram equalization.

AFAPI array histogram(const array &in, const unsigned nbins, const double minval, const double maxval)

C++ Interface for histogram.

AFAPI array loadImage(const char *filename, const bool is_color=false)

C++ Interface for loading an image.

AFAPI array convolve(const array &signal, const array &filter, const convMode mode=AF_CONV_DEFAULT, const convDomain domain=AF_CONV_AUTO)

C++ Interface for convolution any(one through three) dimensional signals.

AFAPI array rotate(const array &in, const float theta, const bool crop=true, const interpType method=AF_INTERP_NEAREST)

C++ Interface for rotating an image.

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