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多尺度分区统一化LBP算子井下人员人脸识别方法

刘晓阳, 霍祎炜

刘晓阳, 霍祎炜. 多尺度分区统一化LBP算子井下人员人脸识别方法[J]. 煤炭科学技术, 2019, (12).
引用本文: 刘晓阳, 霍祎炜. 多尺度分区统一化LBP算子井下人员人脸识别方法[J]. 煤炭科学技术, 2019, (12).
LIU Xiaoyang, HUO Yiwei. Underground personnel face recognition method based on multi-scale unified LBP operator[J]. COAL SCIENCE AND TECHNOLOGY, 2019, (12).
Citation: LIU Xiaoyang, HUO Yiwei. Underground personnel face recognition method based on multi-scale unified LBP operator[J]. COAL SCIENCE AND TECHNOLOGY, 2019, (12).

多尺度分区统一化LBP算子井下人员人脸识别方法

Underground personnel face recognition method based on multi-scale unified LBP operator

  • 摘要: 针对传统的人脸识别算法在对井下人员识别中易受光照和粉尘干扰,难以适应井下复杂环境,影响识别精度的问题,提出基于多尺度分区统一化LBP算子对井下人员面部进行识别,该方法保留了统一化LBP算子的优点,利用多尺度分区的概念对传统的LBP算子进行扩展,通过对不同尺度下人脸面部图像特征提取,增强了对面部图像的全局及局部把握,削弱了局部噪声对整体识别精度的影响。采用分区处理直方图得到复合的特征向量,弥补了传统算法的单一性,获得了多尺度的直方图特征向量,在图像分类中,利用卡方检验对面部特征直方图相似度进行判断,根据设定的阈值将采集到的图像的特征向量与系统中存储的待匹配的图像的特征向量进行对比,实现井下人员面部识别。试验结果表明:通过多尺度分区统一化LBP算子处理,经过直方图均衡化后的井下人员面部图像纹理特征信息得到充分且有效的提取,可以全面地反映井下人员的面部特征;与传统的井下人员面部识别算法相比,多尺度分区统一化LBP算子对噪声和光照的鲁棒性有了明显提高,结合图像分区,多尺度统一化LBP算子对图像局部和整体的把握能力取得了较好的效果,该方法对井下人员人脸识别准确率达94.25%,比传统的井下面部识别算法提高了5%,提升了井下人员识别精度。
    Abstract: Aiming at the problem that the traditional face recognition algorithm is vulnerable to illumination and dust in the identification of underground personnel, it is difficult to adapt to the complex environment of underground and affect the recognition accuracy. It is proposed to identify the face of underground personnel based on multi-scale partitioned LBP operator. The method retains the advantages of unified LBP operator, and extends the traditional LBP operator by using the concept of multi-scale partitioning. By extracting facial image features at different scales, the global and local grasp of facial images is enhanced and weakened. The effect of local noise on the overall recognition accuracy. Using the partition processing histogram to obtain the composite feature vector, the singularity of the traditional algorithm is compensated, and the multi-scale histogram feature vector is obtained. In the image classification, the similarity of the facial feature histogram is judged by the chi-square test. The threshold value compares the feature vector of the acquired image with the feature vector of the image to be matched stored in the system to realize face recognition of the underground personnel. The experimental results show that the LBP operator is unified by multi-scale partitioning, and the texture feature information of the facial image of the underground personnel after the histogram equalization is fully and effectively extracted, which can comprehensively reflect the facial features of the underground personnel; Compared with the human face recognition algorithm, the multi-scale partitioning unified LBP operator has significantly improved the robustness of noise and illumination. Combined with image partitioning, the multi-scale unified LBP operator has better grasp of the local and overall image. Good results, the proposed method in the face recognition of the underground personnel, the accuracy rate of 94.25%, compared with the traditional well below recognition algorithm increased by 5%, this method can improve the recognition accuracy in the identification of underground personnel.
  •   直方图均衡化前后图像对比

      双线性插值确定不在像素中心位置的邻域点

      多尺度分区统一化LBP算子整体算法流程

      一种MB-LBP算子

      MB-LBP提取的纹理特征

      3种不同分区复合LBP直方图

      图像分区i值对识别率的影响

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    其他类型引用(10)

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出版历程
  • 网络出版日期:  2023-04-02
  • 发布日期:  2019-12-24

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