 bit is shifted down to the LSB position (bit 0). This is needed because I want to hide the MSB of the hidden image in the LSB of the vessel image. So I need to shift the MSB down to the LSB.</p>

</li>
<li><p>msb</p>

<p>The masked bit is shifted up to the MSB position (bit 7). This can be useful in case you want to see the Bit Plane as an image. When you have binary values 0/1 on LSB the grayscale has a decimal value of 0/1, so you can not see the difference. When you have binary values 0/1 on MSB, the gr