  In stochastic circuits, major sources of error are correlation errors, soft
errors and random fluctuation errors that affect the accuracy and reliability
of the circuit. The soft error has the effect of changing the correlation
status and in turn changes the probability of numbers leading to the erroneous
output. This has serious impact on security and medical systems where highly
accurate systems are required. We tackle this problem by introducing the
fault-tolerant technique of correlation-sensitive stochastic logic circuits. We
develop a framework of Remodelling Correlation(ReCo) for Stochastic Logic
Elements; AND, XOR and OR for reliable operation. We present two variants of
ReCo models in combinational circuits with contradictory requirements by
stating two interesting case studies. The proposed technique selects logic
elements and places correction blocks based on a priority-based rule that helps
to converge to the desired MSE quickly requiring less hardware area. It is
shown that this technique does not alter the reliability of the overall
circuit. To demonstrate the practical effectiveness of the proposed framework,
contrast stretch operation on a standard image in a noisy environment is
studied. A high structural similarity index measure of 92.80 is observed for
the output image with the proposed approach compared to the image (with error)
66.43.
