摘要: 为了采集清晰且稳定的图像,提出了一种相机自动曝光方法。首先在初始帧图像中检测交通标志,根据交通标志的检测结果,在划分的9个区域中确定感兴趣区域。利用HSV颜色空间中V分量直方图来准确判断图像的曝光情况,并依据感兴趣区域的位置和曝光情况来选择权值矩阵。最后利用灰度值方法获取下一帧图像的曝光时间,完成车载相机的自动曝光。实验结果表明该方法能够快速、有效地完成相机的自动曝光,并对逆光和背光具有一定的适应性。
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