diff --git a/contrib/.gitignore b/contrib/.gitignore
index e9c5cf3..a87249e 100644
--- a/contrib/.gitignore
+++ b/contrib/.gitignore
@@ -5,5 +5,5 @@ demo_fmorph
 *.tga
 *.png
 *.pnm
+*.gif
 *.fimg
-pov.stderr
diff --git a/contrib/Makefile b/contrib/Makefile
index 4e8f418..ddb1f7f 100644
--- a/contrib/Makefile
+++ b/contrib/Makefile
@@ -1,7 +1,18 @@
 
-DBGL = '-DDEBUG_LEVEL=1 -g '
+DBGL = -DDEBUG_LEVEL=1 -g
 
 fimg2povhf:	fimg2povhf.c Makefile
 	gcc -Wall $(DBGL) $< -limage -lfloatimg -lm -o $@
 
+# --------------------------------------------------------
 
+demo_fmorph:	demo_fmorph.c Makefile
+	gcc -Wall $(DBGL) $< -lfloatimg -lpnglite -lm -o $@
+
+in.fimg:	Makefile
+	mkfimg -t tpat0 -v $@ 640 480 
+
+out.png:	in.fimg demo_fmorph
+	./demo_fmorph $< $@
+
+# --------------------------------------------------------
\ No newline at end of file
diff --git a/contrib/demo_fmorph.c b/contrib/demo_fmorph.c
new file mode 100644
index 0000000..4ca5d65
--- /dev/null
+++ b/contrib/demo_fmorph.c
@@ -0,0 +1,116 @@
+/*
+ *		DEMONSTRATOR FOR FMORPHO
+ */
+
+#include  <stdio.h>
+#include  <stdlib.h>
+
+#include  <floatimg.h>
+
+int		verbosity = 1;
+
+#define    DF_W   512
+#define    DF_H   128
+
+/* ~~~ -------------------------------------------------------------- +++ */
+int demo_fmorph(char *srcf, char *dsti, int mode)
+{
+FloatImg		simg, 		// image source
+			timg, uimg,	// intermediaires
+			dimg;		// destination
+FimgArea51		rect;
+char			line[200];
+
+int			foo, pass, hpos;
+
+fprintf(stderr, ">>> %s ( '%s' '%s' %d )\n", __func__, srcf, dsti, mode);
+
+/*
+ *	chargement image source
+ */
+foo = fimg_create_from_dump(srcf, &simg);
+fprintf(stderr, "    load of %s --> %d\n", srcf, foo);
+if (foo) {
+	return foo;
+	}
+
+/*
+ *	images temporaires
+ */
+foo = fimg_create(&timg, DF_W, DF_H, FIMG_TYPE_RGB);
+if (foo) {
+	fprintf(stderr, "err %d create T img\n", foo);
+	return foo;
+	}
+foo = fimg_create(&uimg, DF_W, DF_H, FIMG_TYPE_RGB);
+if (foo) {
+	fprintf(stderr, "err %d create U img\n", foo);
+	return foo;
+	}
+
+/*
+ *	image de destination
+ */
+foo = fimg_create(&dimg, DF_W, DF_H*9, FIMG_TYPE_RGB);
+if (foo) {
+	fprintf(stderr, "err %d create D img\n", foo);
+	return foo;
+	}
+
+/*
+ *	this is an iterator 
+ */
+rect.x = 20;		rect.y = 20;
+rect.w = DF_W;		rect.h = DF_H;
+
+for (pass=0; pass<9; pass++) {
+	hpos = pass * DF_H;
+	fprintf(stderr, "pass %d, hpos %d\n", pass, hpos);
+	foo = fimg_extractor(&simg, &timg, &rect);
+
+	// sprintf(line, "S_%02d.png", pass);
+	// foo = fimg_save_as_png(&timg, line, 0);
+
+	foo = fimg_filtre_morpho_0(&timg, &uimg, pass);
+	if (foo) {
+		fprintf(stderr, "err %d filtre morpho, pass %d\n", 
+					foo,			pass);
+		exit(1);
+		}
+	sprintf(line, "D_%02d.png", pass);
+	foo = fimg_save_as_png(&uimg, line, 0);
+
+	foo = fimg_incrustator_0(&uimg, &dimg, 0, hpos, 0);
+	if (foo) {
+		fprintf(stderr, "err %d incrustator\n", foo);
+		exit(1);
+		}
+	}
+
+foo = fimg_save_as_png(&dimg, dsti, 0);
+/*
+ *	do some cleanup
+ */
+fimg_destroy(&simg); fimg_destroy(&timg); fimg_destroy(&dimg);
+
+
+return 0;
+}
+/* ~~~ -------------------------------------------------------------- +++ */
+int main(int argc, char *argv[])
+{
+int		foo;
+
+fimg_print_version(1);
+
+if (3 != argc) {
+	fprintf(stderr, "usage:\n\t%s src.fimg dst.png\n", argv[0]);
+	exit(1);
+	}
+
+foo = demo_fmorph(argv[1], argv[2], 0);
+fprintf(stderr, "    got --> %d\n", foo);
+
+return 0;
+}
+/* ~~~ -------------------------------------------------------------- +++ */