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Crazy ball

2/6/2010

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Crazy Ball je kratek film, v katerem je uporabljena tehnika matchmoving-a ali 3D sledenje gibanju (to je ko se gibanje realne kamere ujema z gibanjem  3D kamere) in projekcija kamere o kateri bom več povedal kasneje.
Za prvo sceno sem najprej posnel kratek posnetek, ki sem ga konvertiral v format bolj prijazen obdelavi in sicer v Quick time, JPG kodek (dobra kakovost, mala velikost datoteke).
Program PFtrack sem uporabil za sledenje gibanju. Pftrack deluje tako, da sledi gibanju nekih  točk iz katerih ugotovi kje v prostoru naj bi bila kamera. Podatke o kameri in podatke o nekaj točkah sem izvozil v Cinema 4D, kjer sem potem dodal 3D geometrijo ter jo renderiral za v After effects. V Ae sem dodal, popravil sence in svetlobne učinke.
Več o tem postopku pa bom pokazal v enem izmed naslednjih video tutorialov.



V 3. sceni kjer so tudi kocke pa je uporabljene projekcija kamere (camera projection) . To je tehnika ko na preprosto geometrijo projiciramo sliko. Tako lahko animiramo kamero in dobimo občutek da smo v prostoru. Več o tej tehniki lahko izveste v tem tutorialu.

Ostale scene so preprosto narejene v C4D in obdelane v Ae. Da se je krogla tako svetila sem samo animiral svetlost (luminance) in jo razkosal na dele s pomočjo dodatka Thrausi.

PS: Poglejte si nov tutorial kako narediti preprosto predlogo - HDRI loader z XPressom v Cinema 4D.  KLIK

Picture
projekcija kamere
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