Small tool to compare two images with all of the metrics that we have encoded.

CLTool/CMakeLists.txt

@@ -51,17 +51,26 @@ INCLUDE_DIRECTORIES( ${FasTC_SOURCE_DIR}/Core/include )
 INCLUDE_DIRECTORIES( ${FasTC_SOURCE_DIR}/IO/include )
 
 ADD_EXECUTABLE(
-	tc
+  tc
-	${SOURCES}
+  ${SOURCES}
+)
+
+ADD_EXECUTABLE(
+  compare
+  "src/compare.cpp"
 )
 
 # Add flag for link time code generation. This was used to build the libpng libraries, so we should
 # probably also include it for this project as well...
 IF( MSVC )
   SET_TARGET_PROPERTIES(tc PROPERTIES LINK_FLAGS "/LTCG")
+  SET_TARGET_PROPERTIES(compare PROPERTIES LINK_FLAGS "/LTCG")
 ENDIF()
 
 TARGET_LINK_LIBRARIES( tc BPTCEncoder )
 TARGET_LINK_LIBRARIES( tc FasTCBase )
 TARGET_LINK_LIBRARIES( tc FasTCIO )
 TARGET_LINK_LIBRARIES( tc FasTCCore )
+
+TARGET_LINK_LIBRARIES( compare FasTCBase )
+TARGET_LINK_LIBRARIES( compare FasTCIO )

CLTool/src/compare.cpp

@@ -0,0 +1,109 @@
+/* FasTC
+ * Copyright (c) 2012 University of North Carolina at Chapel Hill. All rights reserved.
+ *
+ * Permission to use, copy, modify, and distribute this software and its documentation for educational, 
+ * research, and non-profit purposes, without fee, and without a written agreement is hereby granted, 
+ * provided that the above copyright notice, this paragraph, and the following four paragraphs appear 
+ * in all copies.
+ *
+ * Permission to incorporate this software into commercial products may be obtained by contacting the 
+ * authors or the Office of Technology Development at the University of North Carolina at Chapel Hill <otd@unc.edu>.
+ *
+ * This software program and documentation are copyrighted by the University of North Carolina at Chapel Hill. 
+ * The software program and documentation are supplied "as is," without any accompanying services from the 
+ * University of North Carolina at Chapel Hill or the authors. The University of North Carolina at Chapel Hill 
+ * and the authors do not warrant that the operation of the program will be uninterrupted or error-free. The 
+ * end-user understands that the program was developed for research purposes and is advised not to rely 
+ * exclusively on the program for any reason.
+ *
+ * IN NO EVENT SHALL THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL OR THE AUTHORS BE LIABLE TO ANY PARTY FOR 
+ * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS, ARISING OUT OF THE 
+ * USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL OR THE 
+ * AUTHORS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL AND THE AUTHORS SPECIFICALLY DISCLAIM ANY WARRANTIES, INCLUDING, 
+ * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AND ANY 
+ * STATUTORY WARRANTY OF NON-INFRINGEMENT. THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND THE UNIVERSITY 
+ * OF NORTH CAROLINA AT CHAPEL HILL AND THE AUTHORS HAVE NO OBLIGATIONS TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, 
+ * ENHANCEMENTS, OR MODIFICATIONS.
+ *
+ * Please send all BUG REPORTS to <pavel@cs.unc.edu>.
+ *
+ * The authors may be contacted via:
+ *
+ * Pavel Krajcevski
+ * Dept of Computer Science
+ * 201 S Columbia St
+ * Frederick P. Brooks, Jr. Computer Science Bldg
+ * Chapel Hill, NC 27599-3175
+ * USA
+ * 
+ * <http://gamma.cs.unc.edu/FasTC/>
+ */
+
+#define _CRT_SECURE_NO_WARNINGS
+
+#include <cassert>
+#include <cstdlib>
+#include <cstdio>
+#include <cstring>
+#include <iostream>
+#include <fstream>
+#ifdef _MSC_VER
+#  include <SDKDDKVer.h>
+#  include <Windows.h>
+#endif
+
+#include "Image.h"
+#include "ImageFile.h"
+#include "TexComp.h"
+#include "ThreadSafeStreambuf.h"
+
+#ifdef _MSC_VER
+int _tmain(int argc, _TCHAR* argv[])
+#else
+int main(int argc, char **argv) {
+#endif
+
+  if(argc != 3) {
+    fprintf(stderr, "Usage: compare <img1> <img2>\n");
+    return 1;
+  }
+
+  ImageFile img1f (argv[1]);
+  if(!img1f.Load()) {
+    fprintf(stderr, "Error loading file: %s\n", argv[1]);
+    return 1;
+  }
+
+  ImageFile img2f (argv[2]);
+  if(!img2f.Load()) {
+    fprintf(stderr, "Error loading file: %s\n", argv[2]);
+    return 1;
+  }
+
+  FasTC::Image<> img1(*img1f.GetImage());
+  FasTC::Image<> img2(*img2f.GetImage());
+
+  img1.SetBlockStreamOrder(false);
+  img2.SetBlockStreamOrder(false);
+
+  double PSNR = img1.ComputePSNR(&img2);
+  if(PSNR > 0.0) {
+    fprintf(stdout, "PSNR: %.3f\n", PSNR);
+  }
+  else {
+    fprintf(stderr, "Error computing PSNR\n");
+  }
+
+  double MSSIM;
+  double SSIM = img1.ComputeSSIM(&img2, &MSSIM);
+  if(SSIM > 0.0) {
+    fprintf(stdout, "SSIM: %.9f\n", SSIM);
+    fprintf(stdout, "MSSIM: %.9f\n", MSSIM);
+  } else {
+    fprintf(stderr, "Error computing MSSIM\n");
+  }
+
+  return 0;
+}