diff --git a/detect.cc b/detect.cc
index f09473a..e04f1bf 100644
--- a/detect.cc
+++ b/detect.cc
@@ -42,7 +42,6 @@ Detect::Detect() { // @suppress("Class members should be properly initialized")
 	maxx = NULL;
 	maxy = NULL;
 	detmatrix = NULL;
-	detmatrixv2 = NULL;
 	autodetecttype = 0;
 	autofollowtype = 0;
 };
@@ -156,10 +155,8 @@ void Detect::SetInputSize (int nw, int nh) {
 
 		if (detmatrix != NULL) {
 			free (detmatrix);
-			free (detmatrixv2);
 		}
-		detmatrix = (float*) malloc (sizeof(float) * nw * nh);
-		detmatrixv2 = (uint16_t*) malloc (sizeof(uint16_t) * nw * nh);
+		detmatrix = (uint32_t*) malloc (sizeof(uint32_t) * DET_MAXSHIFT * DET_MAXSHIFT);
 
 		objectX = nw/2;
 		objectY = nw/2;
@@ -231,14 +228,13 @@ inline uint32_t calc_vector(uint16_t a1, uint16_t a2, uint16_t b1, uint16_t b2,
 }
 
 #define OBJSIZE 52
-#define MAXSHIFT 20
 void Detect::InputDetectCrossC(int *posx, int *posy) {
 	unsigned char *pxi;	// input image
 	unsigned char *pxo; // old image
 	int inx, iny, oldx, oldy;
 
 	int shiftx, shifty, x, y, ini, oldi, mxi, mxx, mxy;
-	float f;
+	uint32_t sp;
 
 	if (oldFrame.h != inFrame.h || oldFrame.w != inFrame.w || *posx == -1 || *posy == -1) {
 		*posx = -1;
@@ -261,18 +257,18 @@ void Detect::InputDetectCrossC(int *posx, int *posy) {
 	pxo = oldFrame.data;
 
 	mxx = mxy = 0;
-	for (shifty = 0; shifty < MAXSHIFT; shifty++) {
-		mxi = shifty * objectW;
-		for (shiftx = 0; shiftx < MAXSHIFT; shiftx++, mxi++) {
-			f = 0.0;
+	for (shifty = 0; shifty < DET_MAXSHIFT; shifty++) {
+		mxi = shifty * DET_MAXSHIFT;
+		for (shiftx = 0; shiftx < DET_MAXSHIFT; shiftx++, mxi++) {
+			sp = 0;
 
 			for (y = 0; y < OBJSIZE; y++) {
 				oldx = (*posx)- OBJSIZE/2;
 				oldy = (*posy)- OBJSIZE/2 + y;
 				oldi = 3 * (oldx + oldFrame.w * oldy);
 
-				inx = oldx + shiftx - MAXSHIFT/2;
-				iny = oldy + shifty - MAXSHIFT/2;
+				inx = oldx + shiftx - DET_MAXSHIFT/2;
+				iny = oldy + shifty - DET_MAXSHIFT/2;
 				ini = 3* (inx + inFrame.w * iny);
 
 				for (x = 0; x < OBJSIZE; x++, oldi += 3, ini += 3, oldx++, inx++) {
@@ -288,7 +284,7 @@ void Detect::InputDetectCrossC(int *posx, int *posy) {
 							igray[1] = calc_gray( pxi[oldi+3], pxi[ini+4], pxi[ini+5]);
 							igray[2] = calc_gray( pxi[oldi+6], pxi[ini+7], pxi[ini+8]);
 							igray[3] = calc_gray( pxi[oldi+9], pxi[ini+10], pxi[ini+11]);
-							f += calc_vector( ogray[0], igray[0],
+							sp += calc_vector( ogray[0], igray[0],
 									  ogray[1], igray[1],
 									  ogray[2], igray[2],
 									  ogray[3], igray[3]);
@@ -296,16 +292,16 @@ void Detect::InputDetectCrossC(int *posx, int *posy) {
 					}
 				}
 			}
-			detmatrix[mxi] = f;
-			if (detmatrix[mxx + (mxy * objectW)] < f) {
+			detmatrix[mxi] = sp;
+			if (detmatrix[mxx + (mxy * DET_MAXSHIFT)] < sp) {
 				mxx = shiftx;
 				mxy = shifty;
 			}
 		}
 	}
 
-	*posx += (mxx-MAXSHIFT/2);
-	*posy += (mxy-MAXSHIFT/2);
+	*posx += (mxx-DET_MAXSHIFT/2);
+	*posy += (mxy-DET_MAXSHIFT/2);
 	CopyObjectImage (*posx, *posy);
 }
 
diff --git a/detect.h b/detect.h
index 325784e..2ce8da2 100644
--- a/detect.h
+++ b/detect.h
@@ -13,6 +13,8 @@
 #include "video.h"
 #include "videoframe.h"
 
+#define DET_MAXSHIFT 20
+
 enum {
 	AUTODETECT_OFF = 0,
 	AUTODETECT_BRIGHT
@@ -27,6 +29,7 @@ enum {
 
 struct  {
 	VideoFrame *image;	// detected image
+	uint16_t *detmatrix;
 	int posx;			// position of the detected object
 	int posy;			// position of the detected object
 } typedef DetectOutput;
@@ -50,8 +53,7 @@ private:
 	float *maxy;
 	int posmaxx;
 	int posmaxy;
-	float *detmatrix;
-	uint16_t *detmatrixv2;
+	uint32_t *detmatrix;
 
 	int objectX;				// current object position
 	int objectY;				// current object position