graphics/histogram.cpp

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graphics/histogram.cpp
/*******************************************************
* Copyright (c) 2014, ArrayFire
* All rights reserved.
*
* This file is distributed under 3-clause BSD license.
* The complete license agreement can be obtained at:
* http://arrayfire.com/licenses/BSD-3-Clause
********************************************************/
#include <arrayfire.h>
#include <cstdio>
#include <math.h>
using namespace af;
int main(int argc, char *argv[])
{
try {
// Initialize the kernel array just once
af::info();
af::Window myWindow(512, 512, "Histogram example using ArrayFire");
af::Window imgWnd(480, 640, "Input Image");
array img = loadImage(ASSETS_DIR"/examples/images/arrow.jpg", false);
array hist_out = histogram(img, 256, 0, 255);
while (!myWindow. close() && !imgWnd.close()) {
myWindow. hist(hist_out, 0, 255);
imgWnd. image(img. as(u8));
}
}
catch (af::exception& e) {
fprintf(stderr, "%s\n", e. what());
throw;
}
#ifdef WIN32 // pause in Windows
if (!(argc == 2 && argv[1][0] == '-')) {
printf("hit [enter]...");
fflush(stdout);
getchar();
}
#endif
return 0;
}