Head and shoulder detection is one of the important problems on human body analysis. It is the first step of face detection and the base of pedestrian detection.

头肩图像检测是人体分析研究中受关注的研究方向，是人脸检测的第一步，也是行人检测的基础。

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But once a pedestrian passes by, he will keep nodding his head slightly and automatically as if a gust of wind had forced him to do so.

但是一旦佩德斯徒步流逝，他将继续点头，汽车可立即并自动犹如一阵风迫使他不得不这样做。

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Based on those results, the relationship between pedestrian's head and leg injuries and car impact velocity was studied which can provide references for improving cars' pedestrian safety.

在此基础上计算得出行人头部及下肢伤害与汽车碰撞速度的变化关系，可为改善汽车的行人安全性提供参考。

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It was a full 22 minutes before any significant action surfaced with both sides playing at a fairly pedestrian pace - Elliott leaping on to a Wallace cross to head in from six yards out and putting the visitors into the lead.

BBC: Sport - Football - Hamilton Accies 0-2 Hearts

Mr Thompson suffered serious head injuries when he was hit by the lorry at a pedestrian crossing and died five days later.

BBC: Jake Thompson lorry death in Bristol reinvestigated