シンプルな二値化のサンプルを追加

[cuda.git] / binarize / binarize.cpp

diff --git a/binarize/binarize.cpp b/binarize/binarize.cpp
new file mode 100644 (file)
index 0000000..940132e
--- /dev/null
+++ b/binarize/binarize.cpp
@@ -0,0 +1,69 @@
+/*
+       Copyright (C) 2012  fmaj7b5.info
+
+       This program is free software: you can redistribute it and/or modify
+       it under the terms of the GNU General Public License as published by
+       the Free Software Foundation, either version 2 of the License, or
+       (at your option) any later version.
+
+       This program is distributed in the hope that it will be useful,
+       but WITHOUT ANY WARRANTY; without even the implied warranty of
+       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+       GNU General Public License for more details.
+
+       You should have received a copy of the GNU General Public License
+       along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+// binarize.cpp : \83R\83\93\83\\81[\83\8b \83A\83v\83\8a\83P\81[\83V\83\87\83\93\82Ì\83G\83\93\83g\83\8a \83|\83C\83\93\83g\82ð\92è\8b`\82µ\82Ü\82·\81B
+//
+
+#include "stdafx.h"
+
+#include "Image.h"
+#include "ImageIO.h"
+
+#include "binarize.h"
+
+using namespace FM7b5;
+
+static void binarize_cpu(ImageGray& out, const ImageGray& in, const uint8_t thres = 128);
+
+int _tmain(int argc, _TCHAR* argv[])
+{
+       const uint8_t thres(128);
+       ImageGray image;
+
+       try {
+               image = loadPGM("..\\img\\sine.pgm");
+       }
+       catch (std::exception& e)
+       {
+               std::cout << e.what() << std::endl;
+               return -1;
+       }
+
+       ImageGray out(image.width(), image.height());
+       binarize_cpu(out, image, thres);
+       savePNM(out, "result_cpu.pgm");
+
+       ImageGray out_gpu(image.width(), image.height());
+       binarize_gpu(out_gpu, image, thres);
+       savePNM(out_gpu, "result_gpu.pgm");
+
+       return 0;
+}
+
+void
+binarize_cpu(ImageGray& out, const ImageGray& in, const uint8_t thres)
+{
+       if (in.width() != out.width() || in.height() != out.height()) {
+               throw std::runtime_error("sizes of input and output images are diferent.");
+       }
+
+       for (size_t h = 0; h < in.height(); ++h) {
+               for (size_t w = 0; w < in.width(); ++w) {
+                       out(w, h) = (in(w, h) < thres) ? 0 : 255;
+               }
+       }
+}