Nódalphointe

Category: Taifead

An pointe sa lionsa ar a gcaithfear an ceamara a rothlú chun earráidí parallaxa a sheachaint – níos cruinne go teicniúil ná mar a thugtar air mar „No-Parallax-Point“.

Is é an nódalphointe, i bhfótagrafaíocht phainéaramach agus ghigapicsealach, an pointe rothlaithe ar a gcaithfear an ceamara a rothlú ionas nach dtarlóidh earráid parallaxa le linn an scanta. Go teicniúil, tugtar „No-Parallax-Point“ nó an dalta iontrála ar an bpointe seo; ach tá an téarma nódalphointe i bhfostú sa chleachtas mar sin féin.

Má rothlaítear an ceamara go beacht timpeall ar an bpointe seo, coimeádann gnéithe íomhá gar agus i bhfad i gcéin a suíomh coibhneasta dá chéile, agus is féidir seatanna forluiteacha a fhuáil gan uaim. Socraítear an pointe seo uair amháin do gach teaglaim fhad fócasach lionsa agus coigeartaítear é ar an gceann painéaramach.

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Explained by Daniel Richter · Expert in gigapixel photography · Gigapixel GmbH