Assessment of perceptual distortion boundary through applying reversible watermarking to brain MR images
作者：
Highlights：
• Imperceptibility of watermark requires to be evaluated within the human context.
• This paper implements a visual assessment of watermarked brain MR images.
• This defines level of modification that can be applied in an imperceptible manner.
• This also identifies the visual distortion threshold.
• The outcomes show that modification of images to PSNR ≥82dB is undetectable.
摘要
•Imperceptibility of watermark requires to be evaluated within the human context.•This paper implements a visual assessment of watermarked brain MR images.•This defines level of modification that can be applied in an imperceptible manner.•This also identifies the visual distortion threshold.•The outcomes show that modification of images to PSNR ≥82dB is undetectable.
论文关键词：Medical imaging,DICOM,Reversible watermarking,Imperceptibility,Image quality,Visual grading analysis
论文评审过程：Received 21 February 2018, Revised 25 July 2018, Accepted 23 October 2018, Available online 5 November 2018, Version of Record 12 November 2018.
论文官网地址：https://doi.org/10.1016/j.image.2018.10.007
