| A detection algorithm for zero-quantized DCT coefficients in JPEG Recent countries visiting this post |  |
 | 12 | United States |
 | 3 | Russian Federation |
 | 3 | India |
 | 1 |
| A detection algorithm for zero-quantized DCT coefficients in JPEG Recent countries visiting this post | |
| 12 | United States |
| 3 | Russian Federation |
| 3 | India |
| 1 |