Date of download: 6/18/2016 Copyright © 2016 SPIE. All rights reserved. Processing stages of Lena compressed at 0.1bit per pixel: (a) JPEG2000 compressed Lena, 0.1bit per pixel, PSNR=29.62dB, (b) texture significance map, (c) processing result of the proposed TF, PSNR=30.11dB, and (d) processing result with BF, PSNR=29.28dB. Figure Legend: From: JPEG2000 image postprocessing with novel trilateral deringing filter Opt. Eng. 2008;47(2): doi: /

Date of download: 6/18/2016 Copyright © 2016 SPIE. All rights reserved. Spatial response of the BF and TF for textural and nontextural regions of Lena: (a) region surface of edge region, (b) spatial response of domain filter in edge region, (c) spatial response of range filter in edge region, (d) spatial response of activity filter in edge region, (e) spatial response of BF in edge region, (f) spatial response of TF in edge region, (g) region surface of texture region, (h) spatial response of domain filter in texture region, (i) spatial response of range filter in texture region, (j) spatial response of activity filter in texture region, (k) spatial response of BF in texture region, and (l) spatial response of TF in texture region. Figure Legend: From: JPEG2000 image postprocessing with novel trilateral deringing filter Opt. Eng. 2008;47(2): doi: /

Date of download: 6/18/2016 Copyright © 2016 SPIE. All rights reserved. Processing results of Peppers compressed at 0.1bit per pixel using the proposed TF: (a) JPEG2000 compressed Peppers, 0.1bit per pixel, PSNR=29.63dB, (b) processing result of (a) with BF, PSNR=29.74dB, (c) JPEG2000 compressed Boat, 0.1bit per pixel, PSNR=27.20dB, and (d) processing result of (c) with BF, PSNR=27.55dB. Figure Legend: From: JPEG2000 image postprocessing with novel trilateral deringing filter Opt. Eng. 2008;47(2): doi: /

Date of download: 6/18/2016 Copyright © 2016 SPIE. All rights reserved. Comparative study of the proposed algorithm against state of the art deringing algorithms: (a) original “Lena,” (b) JPEG2000 compressed at 0.1bpp, PSNR=29.62dB, (c) Ref. result, PSNR=29.59dB, (d) Ref. result, PSNR=29.10dB, (e) BF, PSNR=29.28dB, and (f) proposed TF, PSNR=30.11dB. Figure Legend: From: JPEG2000 image postprocessing with novel trilateral deringing filter Opt. Eng. 2008;47(2): doi: /