diff --git a/Fonderie/crapulator.c b/Fonderie/crapulator.c
index 1e3d239..2df3226 100644
--- a/Fonderie/crapulator.c
+++ b/Fonderie/crapulator.c
@@ -196,6 +196,10 @@ switch (idFx) {
 				/* hipass filter */
 		retval = insitu_filtre3x3(image, 1);
 		break;
+	case 20:
+		retval = octotree_classif(image, 0);
+		break;
+
 
 	/* here are the glitches */
 	case 24:			/* experiment ! */
@@ -237,8 +241,6 @@ typedef struct {
 	int		flags;
 	} Crapulor;
 
-
-
 /* -------------------------------------------------------------- */
 char * crap_name_from_number(int num)
 {
@@ -252,10 +254,14 @@ switch (num) {
 	case 9:		return "classif0";
 	case 10:	return "binariz";
 	case 11:	return "trinariz";
+	case 12:	return "smoo2x2";
 	case 13:	return "fltr3x3";
 	case 14:	return "desatur";
+	case 15:	return "killines";
 
 	case 18:	return "updown";
+
+	case 20:	return "octoclass";
 	}
 
 return "???";
diff --git a/Fonderie/metriques.c b/Fonderie/metriques.c
index c21568b..c336d01 100644
--- a/Fonderie/metriques.c
+++ b/Fonderie/metriques.c
@@ -15,7 +15,7 @@ extern int		verbosity;
  */
 int get_float_metric_a(FloatImg *pimg, float *where)
 {
-float		means[4];
+float		means[4];	/* four values : R G B A */
 int		foo;
 
 #if DEBUG_LEVEL
diff --git a/Fonderie/notes.md b/Fonderie/notes.md
new file mode 100644
index 0000000..c3cf7c6
--- /dev/null
+++ b/Fonderie/notes.md
@@ -0,0 +1,4 @@
+
+
+pipeliner le graber et le fondeur par la SHM ?
+
diff --git a/Fonderie/sfx.c b/Fonderie/sfx.c
index 2dd8e36..371e921 100644
--- a/Fonderie/sfx.c
+++ b/Fonderie/sfx.c
@@ -18,6 +18,37 @@
  */
 extern	int		verbosity;
 
+/* -------------------------------------------------------------- */
+/* nouveau du 27 decembre 2020, un soir de grand froid...         */
+
+int octotree_classif(FloatImg *pimg, int notused)
+{
+int		foo;
+float		mm[6], means[4];
+
+fprintf(stderr, ">>> %s ( %p %d )\n", __func__, pimg, notused);
+
+foo = fimg_meanvalues(pimg, means);
+if (foo) {
+	fprintf(stderr, "oups %d in meanvalues\n", foo);
+	return foo;
+	}
+fprintf(stderr, "means:  %11f  %11f  %11f\n", means[0], means[1], means[2]);
+
+foo = fimg_get_minmax_rgb(pimg, mm);
+if (foo) {
+	fprintf(stderr, "oups %d in get minmax\n", foo);
+	return foo;
+	}
+fimg_print_minmax(mm, __func__);
+
+/*
+ *		compute the height center points */
+
+
+
+return -1;
+}
 /* -------------------------------------------------------------- */
 /* nouveau du 19 decembre 2020, pour le grand ecran de da Scritch */
 
diff --git a/Fonderie/sfx.h b/Fonderie/sfx.h
index 7566680..d1262d3 100644
--- a/Fonderie/sfx.h
+++ b/Fonderie/sfx.h
@@ -4,6 +4,7 @@
 
 
 int bouger_les_pixels(FloatImg *pimg, int kaboo);
+int octotree_classif(FloatImg *pimg, int notused);
 
 int mirror_split(FloatImg *pimg, int kaboo);
 int upside_down(FloatImg *pimg);
diff --git a/floatimg.h b/floatimg.h
index a62a443..b405eb1 100644
--- a/floatimg.h
+++ b/floatimg.h
@@ -3,7 +3,7 @@
  *			ugly code from tTh
  */
 
-#define		FIMG_VERSION	115
+#define		FIMG_VERSION	116
 
 /*
  *	in memory descriptor
diff --git a/tools/cumulfimgs.c b/tools/cumulfimgs.c
index 7b89c2f..c5baf04 100644
--- a/tools/cumulfimgs.c
+++ b/tools/cumulfimgs.c
@@ -24,7 +24,9 @@ if (foo) {
 	return foo;
 	}
 
-if (verbosity) fprintf(stderr, "%-20s %d x %d\n",path, numbers[0], numbers[1]);
+if (verbosity) {
+	fprintf(stderr, "%-20s  %dx%d\n", path, numbers[0], numbers[1]);
+	}
 
 if (FIMG_TYPE_RGB != numbers[2]) {
 	fprintf(stderr, "file %s, %d : bad type\n", path, numbers[2]);
@@ -51,6 +53,7 @@ int main(int argc, char *argv[])
 {
 int		foo, idx;
 int		opt;
+int		compte = 0;
 
 int		to_gray = 0;
 char		*output_file = "out.fimg";
@@ -97,6 +100,7 @@ for (idx=optind; idx<argc; idx++) {
 			}
 		fimg_add_2(&temp, &accu);
 		}
+	compte++;
 	}
 
 if (to_gray) {
@@ -119,6 +123,7 @@ if (verbosity) {
 		fprintf(stderr, "err %d on fimg_get_minmax_rgb\n", foo);
 		return foo;
 		}
+	printf("Count   %d\n", compte);
 	printf("Rmin  %12.4g    Rmax  %12.4g    delta %12g\n",
 				vals[0], vals[1], vals[1]-vals[0]);
 	printf("Gmin  %12.4g    Gmax  %12.4g          %12g\n",
diff --git a/v4l2/grabvidseq.c b/v4l2/grabvidseq.c
index f82b858..024af53 100644
--- a/v4l2/grabvidseq.c
+++ b/v4l2/grabvidseq.c
@@ -191,7 +191,7 @@ if ((fmt.fmt.pix.width != width) || (fmt.fmt.pix.height != height)) {
 			    fmt.fmt.pix.width, fmt.fmt.pix.height);
 	}
 
-fprintf(stderr,"--- Ok 1\n");
+// fprintf(stderr,"--- Ok 1\n");
 
 CLEAR(req);
 req.count = NBR_BUFFERS;
@@ -241,7 +241,6 @@ else	{
 			fmt.fmt.pix.width, fmt.fmt.pix.height,
 			FIMG_TYPE_RGB);
 	}
-
 fimg_clear(&cumul);
 cumul.fval = 255.0;		/* must be read from camera XXX */
 cumul.count = 0;
@@ -282,12 +281,10 @@ for (i = 0; i < nbre_capt; i++) {
 						fimg_timer_get(0));
 		fflush(stderr);
 		}
-
 	CLEAR(buf);
 	buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 	buf.memory = V4L2_MEMORY_MMAP;
 	xioctl(fd, VIDIOC_DQBUF, &buf);
-
 	if(verbosity > 2) {
 		fprintf(stderr, "xioctl VIDIOC_DQBUF done\n");
 		fflush(stderr);