Ignore image border when surveying (makes prealigned summed stacks work)

git-svn-id: svn://cook.msm.cam.ac.uk:745/diff-tomo/dtr@175 bf6ca9ba-c028-0410-8290-897cf20841d1

1 files changed, 4 insertions, 2 deletions

diff --git a/src/imagedisplay.c b/src/imagedisplay.c
index 26277a2..c2f2fbe 100644
--- a/src/imagedisplay.c
+++ b/src/imagedisplay.c
@@ -69,6 +69,7 @@ void imagedisplay_put_data(ImageDisplay *imagedisplay, ImageRecord imagerecord)
 	unsigned int w, h;
 	int min, max;
 	double c, scale;
+	int b;
 	
 	h = imagerecord.height;
 	w = imagerecord.width;
@@ -78,8 +79,9 @@ void imagedisplay_put_data(ImageDisplay *imagedisplay, ImageRecord imagerecord)
 	}
 	
 	min = 2<<15;  max = 0;
-	for ( y=0; y<h; y++ ) {
-		for ( x=0; x<w; x++ ) {
+	b = (h+w)/20;	/* Number of pixels of ignored border */
+	for ( y=b; y<h-b; y++ ) {
+		for ( x=b; x<w-b; x++ ) {
 			uint16_t val;
 			val = imagerecord.image[x+w*y];
 			if ( val > max ) max = val;