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OVUFOverflow/Underflow (Elasticity Buffer)
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In addition, to avoid the overflow/underflow problems, Lee et al.
In order to maintain embedded data security and improve the overflow/underflow problem, we propose a secure data hiding scheme by employing an additional modulus function.
* 2 to 5 V CMOS logic outputs with overflow/underflow; 3-latency delays.
Continuous communication requires bit or packet stuffing and FIFO management to prevent overflow/underflow. XO selection should be based on the frequency, jitter and stability requirements of the end application.
The core is parameterizable, allowing specification of the core via an easy-to-use graphical user interface for the implementation of advanced features such as CRC, overflow/underflow and zero insertion.
However, 8-bit depth images have less intensity to handle the overflow/underflow problems.
Overflow/underflow problems in 8-bit depth images are more serious than in 16-bit depth images.
We will demonstrate the experimental results of our approaches and give some discussion about the exception problem of overflow/underflow and overhead in this section.
Note that it is possible for image receiver to recover original image and extract the embedded data by some overhead information, which includes the location of overflow/underflow grayscale values, the value of M and m, etc.
In each embedding process, the pixel changes 1 bit or remains unchanged, so overflow/underflow only happens when the pixel valued 255 or 0.
If at least one value goes beyond the boundary of the valid range (i.e., [0, 255] for grayscale image), the pair becomes invalid due to overflow/underflow. Thus, not all pairs can be expandable.