Unverified50% confidenceFactExact time
FA-PI is constructed by mapping each retained Fourier component into a two-dimensional space, with one coordinate being the frequency bin position and the other being the amplitude, and then applying a Gaussian kernel function for smoothing to generate the persistence image.
1
Sources
50%
Confidence
Long-term
Relevance
10/14/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedA study proposed converting the Fourier amplitude spectrum into a two-dimensional frequency-amplitude persistence image (FA-PI) for impact echo defect detection.73% similarUnverifiedTraveling wave research captures phase differences across different spatial locations at the same moment via high-density electrode arrays or electrocorticography (ECoG), reconstructing the movement trajectory of the wave front.61% similarUnverifiedShazam算法通过快速傅里叶变换将音频转为频谱图，提取局部能量峰值点构成星座图，每对相邻峰值点通过哈希函数被压缩为32位整数指纹60% similarUnverified透视投影由相机内参矩阵描述，包含焦距fx/fy和主点坐标cx/cy59% similar
Cite This Claim
Stable URI
https://kongchang.com/claim/1026645API
curl https://kongchang.com/api/v1/knowledge/claims/1026645MCP
get_claim(id=1026645)