本文针对空间目标旋转、尺度、视点及亮度变化等问题，提出了一种基于特征区域的空间有形目标识别方法。

This paper proposes a new approach for finding expressive and geometrically invariant parts for recognizing space visible targets.

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有机发光两极管除了它们的亮度以外，其价值还在于驱动及控制它们的电流是直接转换成用户所看到的光。

The value of OLEDs, beyond their brightness, is that the electricity which powers and controls them is turned directly into the light the user views.

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但即使是美国最亮的城市拉斯维加斯，其发出的亮度也仅只及太阳光在这块区域反射亮度的万分之一。

But even the brightest city in America, Las Vegas, emits only about a ten-thousandth as much light as the sun shines upon the same area.

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