Some representative embodiments are directed to systems and methods for compressing a data set. In one embodiment, a method comprises receiving a frame of data to be encoded, generating a residual frame that represents a difference between the received frame and one or several reference frames, performing a respective sum of absolute differences (SAD) calculation for each block within the residual frame, and applying a transform function to each data value within the residual frame, wherein the transform function is at least a function of a SAD value calculated for the block containing the respective data value.

 
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