WSQ viewer

Cognaxon

Mayelana nalolu hlelo lokusebenza

Ivula i-WSQ (i-FBI's Wavelet Scalar Quantization) namanye amafomethi wefayela lesithombe.

Amafomethi ezithombe asekelwayo:
I-WSQ - I-Wavelet Scalar Quantization ye-FBI's
I-JP2 - JPEG-2000 Ingxenye-1
JPC - JPEG-2000 Ikhodi Ukusakaza
I-JPG - Iqembu Elihlangene Lochwepheshe Bezithombe
I-PNG - I-Portable Network Graphics
I-BMP - I-Windows Bitmap Graphics
I-GIF - Ifomethi ye-Compuserve Graphic Interchange
I-WEBP - Isithombe Sewebhu
I-HEIF - Ifayela Lesithombe Elisebenza Kakhulu
I-PBM - Ifomethi ye-Bitmap Ephathwayo
I-PGM - Ifomethi yemephu empunga ephathekayo
I-PPM - Ifomethi ye-Pixmap Ephathekayo
I-BIN - ANSI/NIST-ITL 1-2000 Isiginesha yohlobo-8 (Idatha yesithombe kanambambili eskeniwe engacindezelwe)
I-BIN - ANSI/NIST-ITL 1-2000 isiginesha yohlobo-8 (ukucindezelwa kwefaksi ye-ANSI/EIA-538-1988)

Incazelo yefomethi ye-WSQ

E-USA, izigxivizo zeminwe bezilokhu ziqoqwa emakhadini, ikhadi ngalinye eliqukethe okuvelayo kuyo yonke iminwe eyishumi. Uhlu lwezigxivizo zeminwe ze-U.S. Federal Bureau of Investigation lwaqala ngo-1924 ngeqoqo elifakwe kukhathalogi lamakhadi angu-810,188. Ekuqaleni kweMpi Yezwe II, leli qoqo lase likhule laba namakhadi angaphezu kwezigidi ezingu-10, futhi ngo-1946 lase lifinyelele amakhadi angaphezu kwezigidi ezingu-100.
Ngo-1995 leli qoqo laliqukethwe emakhadini angaphezu kwezigidi ezingu-200 agcinwe emakhabetheni okufayilisha ahlala ihektare elilodwa lesikhala sesitezi esakhiweni sakwa-J. Edgar Hoover eWashington D.C. futhi usayizi wenqolobane wawukhula ngenani lamakhadi amasha angu-30 000 kuya kwangu-50 000 ngosuku. Ukufakwa kwedijithali kwamakhadi ezigxivizo zeminwe kubonakala kuyinketho esobala kakhulu futhi iphrojekthi ebizwa ngokuthi Uhlelo Lokuhlonza Izigxivizo Zeminwe ze-FBI (IAFIS) yaqalwa ukuze ibhekane nokuklanywa nokuqaliswa kwezinga likazwelonke lokuqoqa, ukubhala ngekhodi, ukugcina, kanye nokubuyisa izithombe zeminwe eziyidijithali. Ngokwe-FBI izigxivizo zeminwe ezijwayelekile zigcinwa njengezithombe ezimpunga eziyi-8. Ikhadi ngalinye lezigxivizo zeminwe, lapho lifakwa kudijithali eku-500 dpi lidinga cishe u-10 Mbytes wendawo yokubeka. Ngakho-ke lonke iqoqo le-FBI lingadla ama-petabyte amabili (2,000,000,000 megabytes) wesikhala sokugcina sikagesi.
Isidingo sendlela yokucindezela ephumelelayo sabe sesiphuthuma kakhulu. Ngeshwa, izindlela ezingalahleki ezaziwayo noma izindlela ze-JPEG azitholakalanga zinelisayo. Izindlela eziningi zokucindezela ezilahlekile, njenge-JPEG, zilahla imininingwane emincane (imvamisa ephezulu kakhulu) ezithombeni, futhi ngokulinganisa okuphezulu kokucindezela kuhlanekezela isithombe ngendlela engamukeleki. Phakathi kwezigxivizo zeminwe kukhona imininingwane emincane ethathwa njengezindawo zokuhlonza ezifanele enkantolo yomthetho. Ku-JPEG, le mininingwane ingase ithathwe njengomsindo futhi isuswe. I-JPEG quantization matrix iphinde ivumele ama-artifact avimbileyo ukuthi enzeka esithombeni ngezilinganiso zokuminyanisa ezingaphezu kuka-10:1. Ukushintsha ama-bits kumafrikhwensi aphezulu ukuze kulondolozwe imininingwane emincane kuzokwenza ukuvinjwa kube kubi kakhulu. Izindlela zokucindezelwa okungenakulahlekelwa, njenge-LZW ne-JBIG, azikwazi ukuzuza ukucindezelwa okuphezulu kwe-WSQ kudatha yezigxivizo zeminwe, okuthi 2:1 ngokuvamile kube okungcono kakhulu. Indlela entsha yokucindezela (enokulahlekelwa okuncane okwamukelekayo), ebizwa ngokuthi i-Wavelet Scalar Quantization (WSQ) yathuthukiswa futhi yaba indinganiso ye-FBI yokucindezelwa kwezithombe zezigxivizo zeminwe ezingu-500 dpi.
I-WSQ iyindlela yokucindezela elahlekelwayo elungele kahle ukulondoloza imininingwane yokucaca ephezulu kakhulu yezithombe ezimpunga kuyilapho kugcinwa ukucindezelwa okuphezulu okujwayelekile okungu-12:1 kuye ku-15:1 ezithombeni ezingakenziwa "izithuthukisi zekhwalithi" (ezifana nokulinganisa kwe-histogram ) ukuthuthukisa ukubukeka kwesithombe.

Ukucaciswa kwefomethi yefayela le-WSQ

Igama: Ifomethi yefayela le-FBI's Wavelet Scalar Quantization.
Yaziwa nangokuthi: Ifomethi ye-FBI Fingerprint noma i-FBI WSQ
Isicelo: Ifomethi yefayela ejwayelekile esetshenziswa yi-FBI ukugcina nokushintshisana kwezithombe zezigxivizo zeminwe ezimpunga
Umsunguli: I-FBI (U.S. Federal Bureau of Investigation)
Uhlobo: I-Bitmap
Imibala: 8 bit grayscale
Ukucindezela: I-Wavelet Scalar Quantization
Umkhawulo kasayizi wesithombe: 64K x 64K
Izithombe eziningi ngefayela ngalinye: Cha

Yini entsha

Android 12 support added