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The existing local binary pattern (LBP) operators have several disadvantages such as rather long histograms, lower discrimination, and sensitivity to noise. Aiming at these problems, we propose the central- ized binary pattern (CBP) operator. CBP operator can significantly reduce the histograms' dimensionality, offer stronger discrimination, and decrease the white noise's influence on face images. Moreover, for in- creasing the recognition accuracy and speed, we use multi-radius CBP histogram as face representation and project it onto locality preserving projection (LPP) space to obtain lower dimensional features. Experiments on FERET and CAS-PEAL databases demonstrate that the proposed method is superior to other modern approaches not only in recognition accuracy but also in recognition speed. 相似文献
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介绍了一种基于DSP的函数发生器实现方案,主要采用了TMS320VC5409的DSP芯片、数摸转换器TLV5619和单片机AT89S52芯片。采用C语言和汇编语言混合编程的方法实现五种波形的输出,通过记录数据评估函数发生器的实现效果,给出了输出频率和幅度的范围。 相似文献
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The existing local binary pattern (LBP) operators have several disadvantages such as rather long histograms,lower discrimination,and sensitivity to noise.Aiming at these problems,we propose the centralized binary pattern (CBP) operator.CBP operator can significantly rcduce the histograms' dimensionality,offer stronger discrimination,and decrease the white noise's influence on face images.Moreover,for increasing the recognition accuracy and speed,we use multi-radius CBP histogram as face representation and project it onto locality preserving projection (LPP) space to obtain lower dimensional features.Experiments on FERET and CAS-PEAL databases demonstrate that the proposed method is superior to other modern approaches not only in recognition accuracy but also in recognition speed. 相似文献
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铝合金表面超疏水涂层的制备及其耐蚀性能 总被引:1,自引:0,他引:1
基于含氟聚氨酯和纳米SiO2的协同作用, 在铝合金表面成功制备了一层超疏水涂层. 用红外光谱、扫描电镜和电化学测试等技术对超疏水涂层进行了表征和分析. 红外光谱结果表明, 硅烷偶联剂(A1100)成功键合到纳米SiO2表面. 扫描电镜和接触角测定仪对涂层的表面形貌表征结果表明, 涂层表面存在微米鄄亚微米尺度的粗糙结构, 接触角可达到156°, 滚动角小于5°. 电化学测试(交流阻抗和极化曲线)结果表明, 所得到的涂层极大地提高了铝合金的耐蚀性能. 相似文献
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根据来电显示(C ID)的技术规范,利用低功耗,具有振铃检测、载波检测功能,满足Bell 202标准和CC ITT V2.3标准的C ID芯片HT9032C实现接收来电信息。通过单片机将C ID芯片来电信息传输至计算机,由计算机显示来电号码同时从数据库调出与此号码相关的信息,如号码主人以及相关资料等,实现来电信息的管理。 相似文献
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