In scene matching, false matching occurs due to brightness, contrast, scale, noise, and rotation difference between real-time target image and standard target image.

景象匹配中，实时目标图与基准目标图之间的亮度、对比度、噪声水平以及旋转等差异是造成误匹配的重要原因。

youdao

Large-scale repurchases, by contrast, are the province of a relatively few firms.

ECONOMIST: Equities

By contrast, the Swedish Fiscal Policy Council operates on a modest scale, providing an independent review of budgetary plans and performance.

ECONOMIST: Why budgets will be more grown-up

Mr. ALBERT RIDILLA (Co-Creator, Brumagic MPST Densitometer): To the layman it would be related to contrast, the difference between black and white, and every scale in between.

NPR: Sci-Tech Awards: Oscars Sans Glitz