Figure 8.
Panel A shows a pixel mask intensity map over an elbow X ray region with a rectangular box marking an area of interest. Panel B shows a noise like map with dense speckled patterns across the image and a rectangular box at the lower right corner marking a selected region. Panel C shows a block mask composed of square patches with varying intensities and a rectangular box at the lower right highlighting a selected block region. Panel D is a line chart with vertical axis labelled P S N R per decibel and horizontal axis labelled Epoch. Two curves are shown for Pixel Mask and Block Mask. The Pixel Mask curve increases from about 29.2 to about 30.1. The Block Mask curve increases from about 28.4 to about 29.25. An annotation indicates a difference of 0.79 decibel near the final epoch.From left to right: (a) heat map visualization of radiographic images by CAM (Selvaraju et al., 2017). (b) Pixel-level masking strategy visualization. (c) Block mask strategy visualization. (d) PSNR evaluation for different masking strategy performance ( and MUR-mini). Best viewed in color