diff -u perceptualdiff-1.0.1/debian/control perceptualdiff-1.0.1/debian/control
--- perceptualdiff-1.0.1/debian/control
+++ perceptualdiff-1.0.1/debian/control
@@ -2,7 +2,7 @@
 Section: utils
 Priority: optional
 Maintainer: Jeff Breidenbach <jab@debian.org>
-Build-Depends: debhelper (>= 4.0.0), cmake (>= 2.4.5), libpng12-dev, libtiff4-dev
+Build-Depends: debhelper (>= 4.0.0), cmake (>= 2.4.5), libpng12-dev | libpng-dev, libtiff4-dev
 Standards-Version: 3.6.2
 
 Package: perceptualdiff
diff -u perceptualdiff-1.0.1/debian/changelog perceptualdiff-1.0.1/debian/changelog
--- perceptualdiff-1.0.1/debian/changelog
+++ perceptualdiff-1.0.1/debian/changelog
@@ -1,3 +1,10 @@
+perceptualdiff (1.0.1-1.4) unstable; urgency=low
+
+  * Non-maintainer upload.
+  * libpng 1.5 transition.
+
+ -- iwamatsu <iwamatsu@localhost.localdomain>  Sun, 07 Aug 2011 15:23:04 +0900
+
 perceptualdiff (1.0.1-1.3) unstable; urgency=low
 
   * Non-maintainer upload.
only in patch2:
unchanged:
--- perceptualdiff-1.0.1.orig/RGBAImage.cpp
+++ perceptualdiff-1.0.1/RGBAImage.cpp
@@ -102,13 +102,25 @@
 	png_bytep *row_pointers;
 	row_pointers = png_get_rows(png_ptr, info_ptr);
 
-	fimg = new RGBAImage(png_ptr->width, png_ptr->height);
-	for (int y = 0; y < (int) png_ptr->height; y++) {
-		for (int x = 0; x < (int) png_ptr->width; x++) {
+#if PNG_LIBPNG_VER_MAJOR >= 1 && PNG_LIBPNG_VER_MINOR >= 4
+	png_uint_32 width;
+	png_uint_32 height;
+	int color_type;
+
+	png_get_IHDR(png_ptr, info_ptr, &width, &height, NULL, &color_type, NULL, NULL, NULL);
+#else
+	png_uint_32 = png_ptr->width;
+	png_uint_32 = png_ptr->height;
+	int color_type = png_ptr->color_type;
+#endif
+
+	fimg = new RGBAImage(width, height);
+	for (int y = 0; y < (int) height; y++) {
+		for (int x = 0; x < (int) width; x++) {
 			uint32 value = 0;
-			if (png_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
+			if (color_type == PNG_COLOR_TYPE_RGB_ALPHA)
 				value = ((uint32)row_pointers[y][x*4]) | (((uint32)row_pointers[y][x*4+1])<<8) | (((uint32)row_pointers[y][x*4+2])<<16) |(((uint32)row_pointers[y][x*4+3])<<24);
-			else if (png_ptr->color_type == PNG_COLOR_TYPE_RGB)
+			else if (color_type == PNG_COLOR_TYPE_RGB)
 				value = ((uint32)row_pointers[y][x*3] /*B*/) | (((uint32)row_pointers[y][x*3+1] /*G*/)<<8) | (((uint32)row_pointers[y][x*3+2]/*R*/)<<16) | (0xFFUL << 24);
 		   fimg->Set(x,y, value);
 		}