@@ -221,11 +221,10 @@ static inline void blur(uint8_t *dst, int dst_step, const uint8_t *src, int src_

      */

     const int length = radius*2 + 1;

     const int inv = ((1<<16) + length/2)/length;

-    int x, sum = 0;

+    int x, sum = src[radius*src_step];

     for (x = 0; x < radius; x++)

         sum += src[x*src_step]<<1;

-    sum += src[radius*src_step];

     sum = sum*inv + (1<<15);