专业释义英英释义
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空间频率 - 引用次数：32
Using the spatial frequency characteristics of HVS, appropriate areas are selected for watermark embedding. And each image sub-block which has different texture characteristic is embedded by different strength.
该算法利用HVS的空间频率特性,选择合适的嵌入区域嵌入水印,并且对于具有不同纹理特性的区域采用不同的嵌入强度,保证了水印的不可感知性。
参考来源 - 数字图像水印算法研究 -
空间频率 - 引用次数：26
The system is with a broad spatial frequency and focus ranges.
本系统测量的空间频率范围和焦距范围都比较大。
参考来源 - 基于CMOS的调制传递函数测试系统的研究 -
空间频率空间频率
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空间频率
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空间频率
·2,447,543篇论文数据，部分数据来源于NoteExpress
Spatial frequency
- abstract: In mathematics, physics, and engineering, spatial frequency is a characteristic of any structure that is periodic across position in space. The spatial frequency is a measure of how often sinusoidal components (as determined by the Fourier transform) of the structure repeat per unit of distance.
以上来源于: WordNet
柯林斯英汉双解大词典
spatial frequency
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1.
N the measure of fine detail in an optical image in terms of cycles per millimetre 空间频率 [television]
双语例句
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In this paper, the DOA estimation is implemented by spatial frequency spectrum analysis.
本文从空间频谱分析的角度来实现这一估计。
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In processing of array signal, Direction of Arrival (DOA) of target can be obtained by extracting spatial frequency of echo.
在阵列信号处理中，提取回波信号中的空间频率，可以得到目标的方位信息。
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The relationships between the spatial frequency response features and toad's behaviors, and the biological significance were discussed.
并对空间频率特性与蟾蜍行为之间的关系和生物学的意义做了初步探讨。
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