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EXISTING SYSTEM

PROPOSED SYSTEM

EXISTING CONCEPT:

         There are multiple ways of setting the hard threshold for the output PSNR, which determines whether the quality of a video is acceptable or not. For the sake of simplicity, it is assumed that either the absolute PSNR or the  Percentage change in PSNR serves as a faithful yardstick for evaluating the quality  of videos outputted by the approximated MPEG encoder

PROPOSED CONCEPT:           

          An adaptive bit masking method is proposed in, where the authors propose to truncate the pixels of the current and previous frames required for ME  depending  upon the quantization step. A coarse-grained input truncation is applicable only to the specific case of ME and gives unsatisfactory results for other blocks, such as discrete cosine transform (DCT), which requires a finer regulation over error.

EXISTING TECHNIQUE:

         DCT

PROPOSED TECHNIQUE:

         DMFA

TECHNIQUE DEFINITION:

         The transform is orthogonal, we can always find its  Inverse, and the kernel matrix of the inverse transform is obtained by just transposing the kernel matrix of the forward transform. This feature of inverse transform could be used to compute the forward and inverse DCT by similar computing structures

TECHNIQUE DEFINITION:

·         Dual-mode FA (DMFA) cell in which each FA cell can operate either in fully accurate or in some approximation mode depending on the state of the control signal APP. A logic high value of the APP signal denotes that the DMFA is operating in the approximate mode

DRAWBACKS:

         Inaccuracy

         Prudent to be fail

         Complex to design

ADVANTAGES:

         A Proposed reconfigurable approximate architecture for the MPEG encoders that optimize power consumption while maintaining output quality across different input videos.