1 Zaus Kev Ntsuam Xyuas Ntu no piav qhia txog txoj kev tsom xam ntau zaus, Fourier hloov pauv, hauv nws cov duab sib txawv. Rau cov teeb liab nyob ruaj ruaj, nws yog ib txoj hauv kev zoo los txheeb xyuas cov ntsiab lus zaus. Lub Fourier transform yog lub npe tom qab nws inventor Joseph Fourier thiab yog hnub tim rau thaum ntxov 1800's.
Leej twg invented lub wavelet transform?
Wavelet compression, ib daim ntawv ntawm kev hloov coding uas siv wavelet transforms hauv cov ntaub ntawv compression, pib tom qab kev txhim kho ntawm discrete cosine transform (DCT), ib qho thaiv-raws li cov ntaub ntawv compression algorithm thawj zaug tau npaj los ntawm Nasir Ahmed nyob rau xyoo 1970s.
Vim li cas thiaj siv S transform Stockwell?
Qhov zoo ntawm S-Transform yog qhov nws tuaj yeem soj ntsuam qhov zaus ntawm lub teeb liab hloov nrog lub sijhawm thiab muaj kev txhais ncaj qha ntawm cov txiaj ntsig Tsis tas li ntawd, nws muab ntau qhov kev daws teeb meem tsom xam thaum khaws cov theem meej ntawm txhua zaus [2].
Lub hom phiaj ntawm kev hloov pauv hloov pauv txuas mus ntxiv yog dab tsi?
Lub Nruam Wavelet Transform (CWT) yog siv txhawm rau rhuav lub teeb liab rau hauv wavelets. Wavelets yog me me oscillations uas tau nyob hauv lub sijhawm.
Dab tsi yog daim ntawv thov ntawm wavelets?
Cov ntawv thov wavelet tau hais suav nrog suav lej ntsuas, ntsuas teeb liab, tswj cov ntawv thov thiab kev tshuaj xyuas thiab kev hloov pauv ntawm lub suabFourier hloov pauv tsuas yog tuaj yeem khaws cov ntsiab lus thoob ntiaj teb ntawm ib qho. teeb liab, lub sijhawm cov ntaub ntawv ploj lawm.
