Research Article
Stego on FPGA: An IWT Approach
Table 1
Structure of BMP header.
| Address of header function
(Windows OS) | Function | Total number of bytes |
| | 00-01 | Header (BM) | Two bytes | | 02–05 | Image file size | Four bytes | | 06–09 | Reserved bytes | Four bytes | | 10–13 | Starting address of pixel data | Four bytes | | 14–17 | Size of data header | Four bytes | | 18–21 | Image width (row) | Four bytes | | 22–25 | Image height (column) | Four bytes | | 26-27 | Number of colour planes used (always 1) | Two bytes | | 28-29 | Number bits per pixel | Two bytes | | 30–33 | Compression method being used | Four bytes | | 34–37 | Size of stored pixel data | Four bytes | | 38–41 | Width resolution | Four bytes | | 42–45 | Height resolution | Four bytes | | 46–49 | Number of colours actually used | Four bytes | | 50–53 | Number of important colours (0 = all colours important) | Four bytes | | 54 | Beginning of the pixel array | Four bytes |
|
|
