bird clapperとは 意味・読み方・使い方

Since the area rate of the black pixel which constitutes a black thin edge is not made small, the black fine line does not become blurred to fade out so that there is nothing with a bird clapper indistinctly.例文帳に追加

黒の細縁を構成する黒画素の面積率は小さくしないので、黒の細線が掠れて見にくくなることはない。 - 特許庁