ISO IEC 16485:2000 pdf download – Information technology — Mixed Raster Content (MRC). mask layer: Even-numbered layers (i.e. layers 2, 4, 6, …), bi-level data, in a multi-layer segmentation of a page containing a combination ofbi-level and multi-level images. The bi-level mask layer selects the image layer directly above it or the image(s) below it to be visible. A corresponding image layer pixel above the mask layer is selected for reproduction when a mask layer pixel value is “1”. A corresponding pixel from the image or collection ofimages below the mask is selected when a mask pixel value is “0”....