We use QR Code image as a metadata. In part QR Code
image, we use the ZXing (Zebra Crossing) that is an opensource, multi-format 2D barcode image processing library
implemented in Java [7]. Result from experimental show, QR
Code can used for embedding and extracting the metadata.
In this paper, we will use NTSC format image. In NTSC
format, image data consists of three components: luminance,
hue and saturation. The first component of luminance
represents grayscale information, while the last two
components make up color information. One of the main
advantages of this format is that grayscale information is
separated form color data, so the same signal can be used for
both color and black and white sets. Therefore, in this data
hiding scheme, the first QR code will be inserted in the
luminance (Y) components of the color image in DCT domain.
Embedding in the DCT domain proved to be highly resistant to
JPEG compression as well as amounts of noise. The images
used in these experiments are 512 x 512 x 24 bits color images
below. The parameters used in the robust watermark
embedding are