Fasahar hakar sawun yatsa daga hoton yatsa a cikin hoton yatsa a cikin injin ya halarci injin ikon sarrafawa

Abubuwan yatsa da aka saba amfani da su ne ta hanyar halartar injina ta hanyar halartar sujallar yatsa a cikin sinadaran yatsa sune nodes, da sauransu. Ana amfani da kayan aikin yatsa da dacewar yatsa. Babban mahimman fasahar subpin ya hada da lissafin zane-zane, kashi na juyi, kayan tata da kuma tsaftataccen yatsa da kuma gyaran rubutu, da kuma kirga. lissafin da sauransu

Lissafin shugabanci shine tushen tantin yatsa. Yawancin algorithms a cikin tantin yatsa sun dogara ne akan shugabanci, kamar lissafin mitar, kashi na tabo, da sauransu. Hanyar kewaya mai ƙididdiga ta dogara ne akan matakin launin toka tsakanin pixels, yana kwatanta kowane yanayi na ƙafa biyu don fitar da ƙwararrun yankin don ƙididdige ƙarin idan yana da wahala Don sanin shugabanci, Pliner yana amfani da hanyar juzu'i na grayscale don ƙididdige shugabanci na rubutu zuwa cikin kwatance 16, kuma yana lissafa shugabanci na kowane pixel a kowane shugabanci. Theauki shugabanci tare da mafi kyawun daidaito kamar yadda gefen gida na, da kuma lissafin canjin grayscale tare da hanyar hatsi shine mafi ƙarancin hatsi, da kuma grayscale canzawa tare da hatsi shine mafi girma. Mataimakin pixels da kuma rashin rubutu pixels da rashin rubutu, axka da tsarin tsarin 16, kuma suna amfani da hanyar makircin don lissafa shugabanci na hannu, kuma raba hoton yatsa a cikin Girman kowane 32n32, kuma ƙididdige tsinkaye a daban-daban tsinkaye a matsayin mafi girman cibiyar sadarwa, da kuma amfani da hanyar sadarwa ta tsaye don ƙididdige filin shugabanci. A halin yanzu, mafi yawan amfani da hanyar ƙididdigar kayan rubutu ya dogara da gradient. Hanyar ba ta da kyau. Wannan hanyar tana lissafa murfin gradient verector na hoton yatsa a kowane pixel. The direction of the gradient vector represents the fastest grayscale change of the fingerprint image along this direction at the pixel, and the size of the gradient vector represents the speed of the grayscale change. Pixel gradient a gefen zane a cikin hoto ya fi girma, tsarin rubutu yana ƙaddara shi a gefen hoto a gefen zane mai mahimmanci yana da asali tsarin sihiri. Tsarin yanayin kowane yanki ya dogara ne da duk biranen wannan yankin.
Ana kirga makin faifan pixel na pixel, kuma hanyar m vector na gefen kebul na gefen Hoto a hannun hagu da dama na zane-zanen ne kawai a kan lissafin. A cikin lissafin, an kimanta vectulonarancin digiri na sama, da kuma squared gradient venector na gefen pixels a hannun dama da dama na squared vector vector an lasafta shi. Domin shugabanci na squared vector sau biyu ne na squared m vector, 1 Ni na kusan matsakaicin matsakaicin gefen squared vector vector vercor shine shugabanci na tsaye na squerared verect shine shugabanci na a tsaye. Matsalar hanyar da aka danganta da ita ita ce lokacin da mamararshen shugabanci na mafi yawan pixels bai dace da shugabanci na sihiri ba, wanda ba daidai ba za'a iya ƙididdigewa azaman hoton asali, wanda shine tushen sakamako na ainihi. Akwai masu ƙididdigar shugabanci da yawa a cikin yankin Elliptical, wanda shine ƙara haɓaka a hankali na hoto na gida, daga lokacin da mahimmin vectors na mafi yawan pixels ba perpendicular ga shugabanci na zane, kamar yadda haifar da ƙimar shugabanci da ba daidai ba. Hanyar na iya gyara madaidaicin kusancin dangi, amma lokacin da ba daidai ba a cikin wani yanki ne mafi yawansu za a iya gyara shugabanci. Jagorar da ta dace ba daidai ba ce, kuma shugabanci a kusa da mahimmin batun zai iya karkata daga gaskiya shugabanci. Lokacin da curvature na rubutu kusa da mahimmin batun yana da girma.