acroread h2D.pdf
xpdf -aaVector no h2D.pdf
(I don’t know how to disable vector anti-aliasing in evince.)
display -density 288 -resize 25% h2D.pdf
display -density 288 -resample 72 h2D.pdf
(Note: the “display” utility comes from the ImageMagick, 288 = 4 * 72 where 72 is the nominal density / resolution of the h2D.pdf, so resize down by 1/4 = 25% -> this is called “supersampling” -> not very elegant, introduces a bit of blurriness, but helps)