But we were trying to address three key problems that plague digital projectors: lack of brightness, lack of contrast, and lack of sharpness.

但是我们一直试着解决困扰数码放映机的三大难题：亮度较低，对比度较差，清晰度不足。

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Results Digital images were excellent in terms of sharpness and contrast; besides, gastrointestinal dynamic function could also be studied if necessary.

结果：数字化图像清晰度、灰度、对比度均佳，细微结构显示清晰，并可动态观察胃肠道的功能改变。

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But besides noises, there are some other interference factors which weaken the vision effect of digital image greatly, like image contrast, image brightness and image sharpness, etc.

但是通常影响数字图像的视觉效果，除了噪声以外，还存在其它的因素，如图像对比度、图像亮度、图像清晰度等等。

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T. and The Color Purple, lauds digital cinema for achieving a picture quality many thought was impossible, but wonders whether compressed digital bits can ever surpass the sharpness of film.

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