bit-mapped graphics

Black and white and color graphics (such as those produced by illustration or 'paint' programs) composed of bit-maps. Unlike vector graphics, bit-mapped graphics usually cannot be enlarged or reduced without producing jagged lines (aliasing) or distorted images.
from www.businessdictionary.com
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jag
ギザギザにする、切れ目をつける
〔のこぎりに〕歯をつける

distort
〔物の正常な形を〕曲げる、変形させる

distort someone's meaning
（人）の真意を曲解する［曲げて解釈する］

distort someone's opinions
（人）の意見を曲解する

distort the historical fact of the country
その国の歴史的事実をねじ曲げる