Utjecaj autokorekcije na karakteristike amaterske fotografije autoportreta (selfie) realizirane na fotografskim papirima različite dorade površine

Željko Bosančić1, Mario Tomiša2, Teo Žeželj1, Martina Hajdek3

zeljko.bosancic@grf.hr, mario.tomisa@unin.hr, martina.hajdek@gzh.hr
1Sveučilište u Zagrebu Grafički fakultet, Getaldićeva 2, Zagreb, Hrvatska
2Sveučilište Sjever, Trg dr. Žarka Dolinara 1, Koprivnica, Hrvatska
3Grafički zavod Hrvatske d.o.o., Mičevečka ulica 7, Zagreb, Hrvatska

Sažetak

Pojavom mobilnih telefona s ugrađenom kamerom došlo je do velikih promjena u poimanju amaterske fotografije u smislu da se sve više fotografiraju autoportreti, više poznati kao selfie. S obzirom da je u pitanju fotografija „portreta“, prilikom realizacije zahtjeva se očuvanje realnih informacija o bojama kako bi reprodukcija bila vjerodostojna bojama kože koja je na samoj fotografiji. Još uvijek, najčešći način realizacije fotografija je realizacija fotografskim printerima koji sliku ostvaruju RGB laserskim osvjetljavanjem kolor fotografskog papira, te kemijskom obradom tako osvijetljenog fotografskog papira koja se temelji na kromogenom razvijanju. Pri tome se koriste papiri različite dorade površine, a kako bi se postupak ubrzao i pojednostavnio, prilikom osvjetljavanja fotografskog papira se može koristi automatska korekcija boja i oštrine čime se očekuje optimalna reprodukcija boja kože. U radu se ispituje utjecaj autokorekcije na karakteristike amaterskog autoportreta realiziranog na fotografskim papirima različite dorade površine.
Ključne riječi: amaterski autoportret, selfie, RGB kanali, autokorekcija

Influence of automatic correction on characteristics of amateur self-portrait photography (selfie) printed on photographic papers with different surface finishing

Abstract

With the arrival of mobile phones with built-in camera, there was a major change in the perception of amateur photography in the sense that more and more pictures of self-portraits, known as the selfies. Given that it was a self-portrait photography, there is a request to preserve the real color information and to preserve a credible reproduction of skin colors which is often predominant. Still, the most common way of reproducing photography is by printing using RGB laser to illuminate color photographic paper, followed by chemical treatment based on chromogenic development. Different paper with different paper surface finishing are used and in order to speed up and simplify the process and the illumination of the photographic paper can be used for automatic correction of color and sharpness which should result in optimal skin color reproduction. This paper examines the impact of automatic correction on the characteristics of amateur self-portrait realized on photographic paper of different surface finishing.
Keywords: amateur self-portrait, selfie, RGB channels, automatic correction


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