Hauv cov txheej txheem ntawm kev tsim cov ntawv hlau, seb cov qauv tsim puas tuaj yeem ua tau raws li qhov xav tau ntawm cov neeg siv khoom yog qhov tseem ceeb uas txiav txim siab seb lub tuam txhab puas tuaj yeem tau txais kev txiav txim. Nyob rau hauv lub prototype ntau lawm theem, nws yog ib qho tsim nyog yuav tau txuag cov nqi thiab tsim cov khoom uas tuaj yeem ua tau raws li cov neeg siv khoom zoo.
Nyob rau lub sijhawm no, peb yuav siv ntau yam pwm yooj yim (ib lub pwm sab sauv, ib qho pwm qis, ib lub phaj nias) thiab cov khoom siv los tsim cov qauv, thiab ntau cov qauv tsim yuav muaj convex hulls lossis nias tav.
Rau cov khoom zoo li no, cov pwm yooj yim thiab cov jigs yog siv los ua lawv, uas yuav ua rau muaj kev sib hloov thiab deformation, ua rau cov khoom tsis sib xws thiab ua tsis tau raws li qhov yuav tsum tau ua.
Yog vim li cas rau qhov no yog vim hais tias thaum lub Upper tuag (punch) nias lub convex hull los yog lub tav presses lub zos cov khoom ntawm cov khoom mus rau hauv lub tuag, cov khoom uas tsis yog tus tuag tsis muaj zog (tsuas yog cov khoom thiab cov tuag). Thaum lub zog ntawm qhov sib txhuam) ntws mus rau hauv qhov tuag, vim yog qhov ua haujlwm me me, qhov khiav deformation ceev ntawm cov khoom sab nraud tuag sai dua li cov yas deformation ceev ntawm cov khoom hauv qhov tuag, thiab cov khoom tsim tawm hauv kev ntxhov siab ua rau cov khoom siv. sab nraud tuag, ua rau nws tsim warping.
Lub sijhawm no, txawm tias thaum lub punch nias tag nrho cov khoom hauv zos rau hauv qhov tuag, lub platen peb tsim los flatten cov khoom sab nraum qhov tuag kuj yuav flatten thiab kho cov khoom sab nraud tuag tib lub sijhawm.
Txawm li cas los xij, thaum peb tshem tawm cov khoom ua haujlwm lossis cov khoom lag luam, peb pom tias cov khoom tseem muaj kev sib tsoo, uas yog vim li cas txhua tus neeg tsis tuaj yeem nkag siab thiab xav tsis thoob. Yog li nws yuav siv sij hawm ntau, thiab tsis muaj kev lees paub tias cov khoom yog tiaj tus.