expanded contrast

• 扩大的对比度

expanded contrast的用法和样例：

例句

1. Use this button to adjust the contrast.
   用此按钮调节图像明暗的对比度。
2. You may also rotate selected curve points, increasing local contrast and color variation.
   您可能还轮流选定的曲线点，增加当地的对比度和颜色变化。