As a unique art of language,humor is indispensable to human’s daily life,which reflects human's cognitive wisdom to⁃wards objective things and the society.The appreciation of humor mainly depends on the ability t...As a unique art of language,humor is indispensable to human’s daily life,which reflects human's cognitive wisdom to⁃wards objective things and the society.The appreciation of humor mainly depends on the ability to understand the unconventional use of language.Because humor plays an important role in daily life,psychologists,sociologists and linguists all try to explore its operation mechanism.HAPPY THEATER is a live comedy show by Zhejiang Satellite TV,inviting some movie and TV stars as vip actors,without lines or scripts.It is characterized by the ability to improvise in a high degree of performance and the use of humor in a flexible manner.The framework shifting theory is applied to analyze the humorous language of the program from the per⁃spective of cognitive linguistics in order to reveal the linguistic mechanism behind the humor.展开更多
针对在实际场景中,人体与背景之间存在相似的颜色和纹理,且人体运动涉及姿态的多样性,在其复杂多变的背景下运动,使分割出人体轨迹较为困难的问题,提出对称差分算法下人体运动轨迹图像分割技术。采用七帧对称差分算法提取人体运动图像...针对在实际场景中,人体与背景之间存在相似的颜色和纹理,且人体运动涉及姿态的多样性,在其复杂多变的背景下运动,使分割出人体轨迹较为困难的问题,提出对称差分算法下人体运动轨迹图像分割技术。采用七帧对称差分算法提取人体运动图像序列的前3帧和后3帧图像,计算其绝对差分图像,获取人体运动目标区域;采用非参数的统计迭代(Mean Shift)算法提取像素模值点分布情况,生成超像素,利用非参数贝叶斯聚类模型融合超像素提取人体运动目标轮廓;利用高斯混合模型建立人体运动轨迹模型,采用极限学习机求解模型识别人体运动轨迹,实现人体运动轨迹图像分割。实验结果表明,所提方法IOU(Intersection Over Union)值最高可达97%,提取运动目标区域和识别运动轨迹精度较高、分割性能较好,适用于人体运动轨迹图像分割。展开更多
为解决传统差分混沌移位键控(differential chaotic shift keying,DCSK)系统安全性较差及误码性能受限的问题,提出一种结合脉冲位置调制与动态帧变换技术的DCSK(frame-transform DCSK system based on pulse position modulation,FT-PPM...为解决传统差分混沌移位键控(differential chaotic shift keying,DCSK)系统安全性较差及误码性能受限的问题,提出一种结合脉冲位置调制与动态帧变换技术的DCSK(frame-transform DCSK system based on pulse position modulation,FT-PPM-DCSK)系统,实现安全性与误码性能的协同优化。通过推导系统在加性高斯白噪声(additive white Gaussian noise,AWGN)信道下的误比特率(BER)表达式,基于蒙特卡洛仿真验证其性能。实验结果表明,与基准DCSK系统相比,FT-PPM-DCSK系统提高了误码性能且具有更高的安全性。展开更多
文摘As a unique art of language,humor is indispensable to human’s daily life,which reflects human's cognitive wisdom to⁃wards objective things and the society.The appreciation of humor mainly depends on the ability to understand the unconventional use of language.Because humor plays an important role in daily life,psychologists,sociologists and linguists all try to explore its operation mechanism.HAPPY THEATER is a live comedy show by Zhejiang Satellite TV,inviting some movie and TV stars as vip actors,without lines or scripts.It is characterized by the ability to improvise in a high degree of performance and the use of humor in a flexible manner.The framework shifting theory is applied to analyze the humorous language of the program from the per⁃spective of cognitive linguistics in order to reveal the linguistic mechanism behind the humor.
文摘针对在实际场景中,人体与背景之间存在相似的颜色和纹理,且人体运动涉及姿态的多样性,在其复杂多变的背景下运动,使分割出人体轨迹较为困难的问题,提出对称差分算法下人体运动轨迹图像分割技术。采用七帧对称差分算法提取人体运动图像序列的前3帧和后3帧图像,计算其绝对差分图像,获取人体运动目标区域;采用非参数的统计迭代(Mean Shift)算法提取像素模值点分布情况,生成超像素,利用非参数贝叶斯聚类模型融合超像素提取人体运动目标轮廓;利用高斯混合模型建立人体运动轨迹模型,采用极限学习机求解模型识别人体运动轨迹,实现人体运动轨迹图像分割。实验结果表明,所提方法IOU(Intersection Over Union)值最高可达97%,提取运动目标区域和识别运动轨迹精度较高、分割性能较好,适用于人体运动轨迹图像分割。
文摘为解决传统差分混沌移位键控(differential chaotic shift keying,DCSK)系统安全性较差及误码性能受限的问题,提出一种结合脉冲位置调制与动态帧变换技术的DCSK(frame-transform DCSK system based on pulse position modulation,FT-PPM-DCSK)系统,实现安全性与误码性能的协同优化。通过推导系统在加性高斯白噪声(additive white Gaussian noise,AWGN)信道下的误比特率(BER)表达式,基于蒙特卡洛仿真验证其性能。实验结果表明,与基准DCSK系统相比,FT-PPM-DCSK系统提高了误码性能且具有更高的安全性。
