Cov txheej txheem ntsuas ntsuas yog cov ntsiab lus tshawb fawb tseem ceeb ntawm daim ntawv no, uas yog siv los cuam tshuam qhov loj me, cov duab thiab txoj haujlwm yuam kev ntawm cov yam ntxwv ua tiav hauv cov txheej txheem tam sim no. Lub dynamic datum tuaj yeem muab faib ua kab datum thiab datum dav hlau raws li daim ntawv geometric. Cov kab datum suav nrog cov axis thiab kab nruab nrab ntawm lub kiv puag ncig. Lub dav hlau datum suav nrog lub dav hlau symmetrical, lub ntsej muag kawg, qhov chaw txhawb nqa, qhov chaw mounting thiab qhov sib koom ua ke.
Qhov pom kev pom cov yam ntxwv ntawm cnc ua tiav cov duab suav nrog cov xim nta, kev ntxhib los mos nta, spatial kev sib raug zoo nta, thiab cov yam ntxwv zoo. Xim nta yog raws li tag nrho cov yam ntxwv ntawm cov duab pixels. Kev ntxhib los mos nta tau suav nrog hauv ib cheeb tsam uas muaj ntau pixels. Spatial kev sib raug zoo yog hais txog txoj hauj lwm spatial los yog txheeb ze orientation kev sib raug zoo ntawm ntau yam khoom hauv ib daim duab. Cov duab zoo yog hais txog cov duab tshwj xeeb uas tsim los ntawm cov txheej txheem geometric (cov ntsiab lus, kab, qhov chaw) nrog qee qhov kev sib raug zoo topology ntawm cov khoom ua haujlwm. Raws li cov ntaub ntawv tseem ceeb pom ntawm cov khoom, cov yam ntxwv zoo yog cov cwj pwm ruaj khov sawv cev ntawm cov khoom.
Raws li kev sib piv ntawm cov yam ntxwv sib txawv ntawm qhov pom thiab cov kev soj ntsuam saum toj no ntawm qhov ntsuas dynamic, cov duab zoo ua raws li cov yam ntxwv ntawm cov qauv ntsuas dynamic, yog li cov duab zoo yog xaiv raws li nws qhov pom kev. Feem ntau, cov yam ntxwv zoo tuaj yeem sawv cev raws li cov duab raws li contour nta thiab cov yam ntxwv ntawm cheeb tsam, nrog rau cov ces kaum, npoo, kab ncaj, nkhaus, thiab cheeb tsam. Yog tias muaj kev cuam tshuam ntawm ntug, ntau tus lej ntawm cov ntsiab lus tsis tseeb ntawm ntug yuav raug tsim tawm, uas yuav cuam tshuam rau ntug feature extraction. Nyob rau lub sijhawm no, nws yog ib qho tseem ceeb heev kom nrhiav tau cov duab tsim algorithm.
Kev txheeb xyuas cov ntaub ntawv thiab cov txheej txheem rho tawm hauv cov txheej txheem ntawm NC machining, thaum lub machining siv yog lub ces kaum ntawm lub workpiece, nws tshwm nyob rau hauv daim ntawv ntawm kaum cov ntsiab lus nyob rau hauv cov duab pom. Ntawm cov duab kaum pom pom algorithms, cov qauv raws li txoj kev siv dav tshaj plaws, suav nrog Harris algorithm, Susan algorithm, FAST algorithm thiab SURF algorithm.
Ntawm lawv, Susan algorithm muaj lub zog zoo rau lub suab nrov, thiab tseem muaj qhov tsis sib xws ntawm lub teeb siv hloov pauv thiab kev sib hloov invariance. Nws siv cov kev txwv tsawg heev, yog li nws yuav tsum tau suav tsawg dua thiab khaws cia. Yog li ntawd, Susan algorithm yog siv los rho tawm lub kaum sab xis ntawm txoj haujlwm, uas yog, txoj haujlwm ntawm kev siv dynamic.
Thaum lub machining siv yog lub axis los yog centerline ntawm lub revolving nto, nws zoo nkaus li qhov nruab nrab ntawm lub voj voog nyob rau hauv cov duab pom, tab sis qhov nruab nrab ntawm lub voj voog tsis yog tiag tiag, yog li qhov kev rho tawm ntawm nws qhov pom kev cuam tshuam nrog kev rho tawm ntawm ntug. ntawm lub voj voog thiab nkhaus haum. Tau txais cov chaw tswj xyuas qhov chaw yog lub tshuab machining dynamic siv txoj haujlwm. Ntawm cov feem ntau siv ntug extraction tswv, Canny tus neeg teb xov tooj muaj ntau dua qhov chaw raug rau ib leeg-pixel ntug dua li lwm tus ntug nrhiav kom pom, thiab muaj peev xwm tiv thaiv suab nrov zoo dua.