Design of High Accuracy Inexact 4-2 Compressors

Abstract

Approximate (Inexact) computing is best suitable for the applications where they can accept the results with acceptable loss. We have also introduced three new models of inaccurate 4-2 compressors in this paper, using the current inaccurate 4-2 compressors. All proposed work results are measured in a standard CMOS technology of 90 nm and compared to previously published work. The proposed compressors provide the promised results in terms of error and electrical performance as compared with its counterpart. In order to validate our results, we have also performed image sharpening and image smoothening by using our proposed multipliers. The Structural Similarity Index Matrix (SSIM) of proposed multipliers are measured and interesting results were found.