Analysis of Data Hiding with Multi-bit Image Steganography

We studied how stego-image is affected by color, image size, and the number of bits used to encode data in terms of delta E, SSIM, PSNR. The study shows that the black color is better to hide data than other colors such as red, green, blue, yellow, fuchsia, cyan, and white. The white color is the least one to hide data. One bit encoding that holds smallest amount data has a higher PSNR and delta E than that of multiple bits to hide data. The black color is sensitive to luminance and responses to contrast change more than other six colors as well.