You can use Brightness Contrast to make colours sharp.

你可以用亮度-对比度来让颜色更犀利。

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The present study mainly focused on the role of topological structure and brightness contrast in perceptual organization and perceptual selection.

本研究特别关注拓扑结构、明度对比在知觉组织和知觉选择中的作用。

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DLP technology provides all-digital projection display, offering superior picture quality in terms of resolution brightness contrast and color fidelity.

DLP技术提供了全数字投影显示，在清晰度、亮度、对比度和色彩还原方面能提供高质量的图像。

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In the not-too-distant future, however, they hope to achieve the brightness and contrast of traditional newsprint.

ECONOMIST: Showing off

It's no fancy set of circuits, though, but a pair of algorithms which tinker with image brightness and contrast to produce a more radiant picture.

ENGADGET

Here you can also use sliders to adjust brightness and contrast.

CNN: Lose that bulky photo wallet with Palm IIIc album