Added rounding code to getRow() as well and updated the tests accordingly.

[zxing.git] / javase / src / com / google / zxing / client / j2se / BufferedImageLuminanceSource.java

diff --git a/javase/src/com/google/zxing/client/j2se/BufferedImageLuminanceSource.java b/javase/src/com/google/zxing/client/j2se/BufferedImageLuminanceSource.java
index 28b0129..1d44564 100644 (file)
--- a/javase/src/com/google/zxing/client/j2se/BufferedImageLuminanceSource.java
+++ b/javase/src/com/google/zxing/client/j2se/BufferedImageLuminanceSource.java
@@ -74,7 +74,8 @@ public final class BufferedImageLuminanceSource extends LuminanceSource {
       int pixel = rgbData[x];
       int luminance = (306 * ((pixel >> 16) & 0xFF) +
           601 * ((pixel >> 8) & 0xFF) +
       int pixel = rgbData[x];
       int luminance = (306 * ((pixel >> 16) & 0xFF) +
           601 * ((pixel >> 8) & 0xFF) +

-          117 * (pixel & 0xFF)) >> 10;
+          117 * (pixel & 0xFF) +
+          (0x200)) >> 10; // 0x200 = 1<<9, half an lsb of the result to force rounding

       row[x] = (byte) luminance;
     }
     return row;
       row[x] = (byte) luminance;
     }
     return row;