Figure 15
De-noising comparison between the proposed sparse representation and the SURE-LET OWT method [31]. In the proposed approach, the de-noising is implemented by soft thresholding the transform coefficients in each subband. The threshold step-size is chosen by minimising the SURE estimate of the MSE. (a) Tsukuba light field. (b) Teddy EPI. (c) Doll EPI.