No special modification, nor a complex background.

没有特别的修饰，亦没有复杂的背景…

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Face orientation in a complex background is a focus and difficulty in image research area.

复杂背景下的人脸定位是图像研究领域中的难点和热点。

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Not only single face can be detected, but also more human faces in a complex background can be correctly detected.

这样不仅可以检测单人脸，也可对复杂背景下的多人脸进行检测。

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Pandit has experience running a complex investment bank, but little background as the chief of a global consumer operation.

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"Patrick Duffy has a complex medical history and a number of background risk factors that indicated an increased risk of abuse of medication and self harm while in custody, " she said.

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But some recent social science research reveals a more likely and complex explanation: People do things because people who look and talk like them or share the same background do those things.

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