空間標準觀察裝置及方法 SPATIAL STANDARD OBSERVER
    5.
    发明专利
    空間標準觀察裝置及方法 SPATIAL STANDARD OBSERVER 审中-公开
    空间标准观察设备及方法 SPATIAL STANDARD OBSERVER

    公开(公告)号:TW200802134A

    公开(公告)日:2008-01-01

    申请号:TW095120184

    申请日:2006-06-07

    IPC: G06K

    Abstract: 本發明係關於測量及/或標定之裝置與方法,用以測量及/或標定一視覺影像的感知强度、或一對影像之間的感知距離。處理灰度測試與參考影像,以產生測試與參考亮度影像。一亮度濾波函數(filter function)與參考亮度影像進行卷積(convolve),以產生一局部平均亮度參考影像。測試與參考對比影像是接著應用一對比敏感度濾波器,而分別由局部平均亮度參考影像以及測試與參考亮度影像所產生。所產生的影像係根據一數學規則而組合,以產生一恰好可辨識差異(Just Noticeable Difference)JND値,用以指示一空間標準觀察者SSO(Spatial Standard Observer)。有些實施例包括遮蔽函數、窗函數、位於或接近邊界上的影像之特殊處理、以及測試影像的預先處理。

    Abstract in simplified Chinese: 本发明系关于测量及/或标定之设备与方法,用以测量及/或标定一视觉影像的感知强度、或一对影像之间的感知距离。处理灰度测试与参考影像,以产生测试与参考亮度影像。一亮度滤波函数(filter function)与参考亮度影像进行卷积(convolve),以产生一局部平均亮度参考影像。测试与参考对比影像是接着应用一对比敏感度滤波器,而分别由局部平均亮度参考影像以及测试与参考亮度影像所产生。所产生的影像系根据一数学守则而组合,以产生一恰好可辨识差异(Just Noticeable Difference)JND値,用以指示一空间标准观察者SSO(Spatial Standard Observer)。有些实施例包括屏蔽函数、窗函数、位于或接近边界上的影像之特殊处理、以及测试影像的预先处理。

    9.
    发明专利
    未知

    公开(公告)号:DE2835703C2

    公开(公告)日:1987-09-24

    申请号:DE2835703

    申请日:1978-08-16

    Abstract: A device for measuring acoustic properties and their changes in a sample of liquid, gas, plasma or solid. A variable frequency source is applied to the sample by means of a transducer to produce sound waves within the sample. The application of the variable frequency source to the sample is periodically interrupted for a short duration. Means are connected to the transducer for receiving the resulting acoustic signals during the interruptions for producing a control signal indicative of a difference in the frequency of the output of the variable frequency source and the frequency of a mechanical resonant peak in the sample. The control signal is applied to the variable frequency source to maintain its output frequency at the frequency of the mechanical resonant peak. The change in frequency of the variable frequency source is indicative of the shift in frequency of the mechanical resonant peak and the amplitude of the acoustic signals is indicative of the attenuation of the acoustic signals in the sample.

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