diff --git a/libopenjpeg/dwt.c b/libopenjpeg/dwt.c
index 712d68ba..92d006ad 100644
--- a/libopenjpeg/dwt.c
+++ b/libopenjpeg/dwt.c
@@ -67,7 +67,7 @@ static int *b = NULL;
 static int lastSizeOfB = 0;
 
 /* <summary>       */
-/* Claning memory. */
+/* Cleaning memory. */
 /* </summary>      */
 
 void dwt_clean()
diff --git a/libopenjpeg/fix.c b/libopenjpeg/fix.c
index 53a8a8cb..77ca6d63 100644
--- a/libopenjpeg/fix.c
+++ b/libopenjpeg/fix.c
@@ -25,6 +25,7 @@
  */
 
 #include "fix.h"
+#include <math.h>   //Add Antonin : multbug1
 
 #ifdef WIN32
 #define int64 __int64
@@ -35,7 +36,19 @@
 /*
  * Multiply two fixed-precision rational numbers.
  */
+
+//int fix_mul(int a, int b)
+//{
+//  return (int) ((int64) a * (int64) b >> 13);
+//}
+
+//Mod Antonin : multbug1
 int fix_mul(int a, int b)
 {
-  return (int) ((int64) a * (int64) b >> 13);
+  double tmp= (double) ((int64) a * (int64) b);
+  int64 v = (int64) ((fabs(tmp/8192.0)>=floor(fabs(tmp/8192.0))+0.5)?fabs(tmp/8192.0)+1.0:fabs(tmp/8192.0));
+  v = (tmp<0)?-v:v;
+  return (int) v;
 }
+//doM
+
diff --git a/libopenjpeg/t1.c b/libopenjpeg/t1.c
index deb6b98a..b1b22469 100644
--- a/libopenjpeg/t1.c
+++ b/libopenjpeg/t1.c
@@ -92,7 +92,7 @@ static int t1_lut_nmsedec_sig0[1 << T1_NMSEDEC_BITS];
 static int t1_lut_nmsedec_ref[1 << T1_NMSEDEC_BITS];
 static int t1_lut_nmsedec_ref0[1 << T1_NMSEDEC_BITS];
 
-static int t1_data[T1_MAXCBLKH][T1_MAXCBLKH];
+static int t1_data[T1_MAXCBLKH][T1_MAXCBLKW];
 static int t1_flags[T1_MAXCBLKH + 2][T1_MAXCBLKH + 2];
 
 int t1_getctxno_zc(int f, int orient)
@@ -187,6 +187,7 @@ void t1_enc_sigpass_step(int *fp, int *dp, int orient, int bpno, int one,
   }
 }
 
+
 void t1_dec_sigpass_step(int *fp, int *dp, int orient, int oneplushalf,
 			 char type, int vsc)
 {
@@ -247,7 +248,9 @@ void t1_dec_sigpass(int w, int h, int bpno, int orient, char type,
 	vsc = ((cblksty & J2K_CCP_CBLKSTY_VSC)
 	       && (j == k + 3 || j == h - 1)) ? 1 : 0;
 	t1_dec_sigpass_step(&t1_flags[1 + j][1 + i],
-			    &t1_data[j][i], orient, oneplushalf,
+			    &t1_data[j][i], 
+			    orient, 
+			    oneplushalf,
 			    type, vsc);
       }
     }
@@ -275,6 +278,7 @@ void t1_enc_refpass_step(int *fp, int *dp, int bpno, int one, int *nmsedec,
   }
 }
 
+
 void t1_dec_refpass_step(int *fp, int *dp, int poshalf, int neghalf,
 			 char type, int vsc)
 {
@@ -326,7 +330,10 @@ void t1_dec_refpass(int w, int h, int bpno, char type, int cblksty)
 	vsc = ((cblksty & J2K_CCP_CBLKSTY_VSC)
 	       && (j == k + 3 || j == h - 1)) ? 1 : 0;
 	t1_dec_refpass_step(&t1_flags[1 + j][1 + i],
-			    &t1_data[j][i], poshalf, neghalf, type, vsc);
+			    &t1_data[j][i], 
+			    poshalf, 
+			    neghalf, 
+			    type, vsc);
       }
     }
   }
@@ -358,6 +365,7 @@ void t1_enc_clnpass_step(int *fp, int *dp, int orient, int bpno, int one,
   *fp &= ~T1_VISIT;
 }
 
+
 void t1_dec_clnpass_step(int *fp, int *dp, int orient, int oneplushalf,
 			 int partial, int vsc)
 {
@@ -495,7 +503,9 @@ void t1_dec_clnpass(int w, int h, int bpno, int orient, int cblksty)
 	vsc = ((cblksty & J2K_CCP_CBLKSTY_VSC)
 	       && (j == k + 3 || j == h - 1)) ? 1 : 0;
 	t1_dec_clnpass_step(&t1_flags[1 + j][1 + i],
-			    &t1_data[j][i], orient, oneplushalf,
+			    &t1_data[j][i], 
+			    orient, 
+			    oneplushalf,
 			    agg && (j == k + runlen), vsc);
       }
     }
@@ -692,6 +702,8 @@ void t1_decode_cblk(tcd_cblk_t * cblk, int orient, int roishift,
       mqc_init_dec(seg->data, seg->len);
     /* dda */
 
+    if (bpno==0) cblk->lastbp=1;  // Add Antonin : quantizbug1
+
     for (passno = 0; passno < seg->numpasses; passno++) {
       switch (passtype) {
       case 0:
@@ -865,13 +877,18 @@ void t1_decode_cblks(tcd_tile_t * tile, j2k_tcp_t * tcp)
 		for (i = 0; i < cblk->x1 - cblk->x0; i++) {
 		  if (t1_data[j][i] == 0) {
 		    tilec->data[x + i +
-				(y + j) * (tilec->x1 - tilec->x0)] = 0;
+		      (y + j) * (tilec->x1 - tilec->x0)] = 0;
 		  } else {
+		    // Add antonin : quantizbug1
+		    t1_data[j][i]<<=1;
+		    //if (cblk->lastbp) 
+		    t1_data[j][i]+=t1_data[j][i]>0?1:-1;
+		    // ddA
 		    tilec->data[x + i +
 				(y + j) * (tilec->x1 -
 					   tilec->
 					   x0)] =
-		      fix_mul(t1_data[j][i] << 13, band->stepsize);
+		      fix_mul(t1_data[j][i] << 12, band->stepsize); //Mod Antonin : quantizbug1 (before : << 13)
 		  }
 		}
 	      }
diff --git a/libopenjpeg/tcd.c b/libopenjpeg/tcd.c
index fb778347..09e31ece 100644
--- a/libopenjpeg/tcd.c
+++ b/libopenjpeg/tcd.c
@@ -774,6 +774,8 @@ void tcd_init(j2k_image_t * img, j2k_cp_t * cp)
 	      cblk->y0 = int_max(cblkystart, prc->y0);
 	      cblk->x1 = int_min(cblkxend, prc->x1);
 	      cblk->y1 = int_min(cblkyend, prc->y1);
+
+	      cblk->lastbp = 0; // Add Antonin : quantizbug1
 	    }
 	  }
 	}
@@ -1523,10 +1525,15 @@ int tcd_decode_tile(unsigned char *src, int len, int tileno)
       for (i = res->x0; i < res->x1; i++) {
 
 	int v;
+	double tmp= (double) tilec->data[i - res->x0 + (j - res->y0) * tw];
 	if (tcd_tcp->tccps[compno].qmfbid == 1) {
-	  v = tilec->data[i - res->x0 + (j - res->y0) * tw];
+	  v = (int) tmp;
 	} else {
-	  v = tilec->data[i - res->x0 + (j - res->y0) * tw] >> 13;
+	  //v = (int) tmp >> 13;
+	  //Mod antonin : multbug1
+	  v = (int) ((fabs(tmp/8192.0)>=floor(fabs(tmp/8192.0))+0.5)?fabs(tmp/8192.0)+1.0:fabs(tmp/8192.0));
+	  v = (tmp<0)?-v:v;
+	  //doM
 	}
 	v += adjust;
 
diff --git a/libopenjpeg/tcd.h b/libopenjpeg/tcd.h
index 236a3a6b..6e64717d 100644
--- a/libopenjpeg/tcd.h
+++ b/libopenjpeg/tcd.h
@@ -57,6 +57,7 @@ typedef struct {
 typedef struct {
   int x0, y0, x1, y1;		/* dimension of the code-blocks : left upper corner (x0, y0) right low corner (x1,y1) */
   int numbps;
+  int lastbp;			/* Add antonin : quantizbug1 */
   int numlenbits;
   int len;			/* length */
   int numpasses;		/* number of pass already done for the code-blocks */