Hoton bitmap (ko raster) yana daya daga cikin manyan nau'i-nau'i guda biyu (wanda ke kasancewa na ƙananan). Hotuna masu mahimmanci na bitmap suna kunshe da pixels a cikin grid. Kowane pixel ko "bit" a cikin hoton yana dauke da bayani game da launin da za'a nuna. Hotunan bitmap suna da ƙayyadadden ƙuduri kuma ba za a iya sakewa ba tare da rasa hoto. Ga dalilin da ya sa:
Kowace pixel a kan allo ɗinka, a cikin sauƙi mai sauƙi, wani "bit" bayanin launi da aka yi amfani dashi don nuna hoton a kan allon. Wannan allon zai iya zama ƙananan kamar ɗaya a kan Apple Watch ko babba a matsayin Pixel Board samu a Times Square.
Tare da buƙatar sanin launuka guda uku- Red, Green, Blue- amfani da pixel wani "bit" na bayanin shi ne inda, daidai, cewa pixel yana samuwa a cikin hoton. An halicci wadannan pixels lokacin da aka kama hotunan. Saboda haka idan kamararka ta kama hoto a 1280 pixels a fadin kuma 720 pixels ƙasa akwai 921,600 mutum pixels a cikin hoton kuma kowane pixel ta launi da wuri dole ne a tuna da kuma sanya. Idan ka ninka girman hoton, duk abin da ya faru shine pixels sun fi girma kuma girman fayil yana ƙaruwa saboda yawan adadin pixels sun kasance yanzu a cikin wuri mafi girma. Ba a ƙara pixels ba. Idan ka rage girman hoton wannan adadin pixels suna cikin ƙananan wuri kuma, saboda haka, girman fayil ɗin ya rage.
Wani abu wanda yake rinjayar bitmaps shine ƙuduri. An ƙaddamar da ƙuduri lokacin da aka halicci hoton. Yawancin kyamarori na yau da kullum na zamani, misali, kama hotuna da madaidaici 300. Abin da ake nufi yana da 300 pixels a cikin kowane linzamin linzamin na hoton. Wannan yana bayanin dalilin da ya sa hotunan kyamaran kyamara na iya zama babbar. Akwai ton ƙarin pixels da za a tsara su kuma masu launin launi fiye da yadda aka samo su a cikin hanyar kwamfuta.
Ma'anar tsari na bitmap sune JPEG, GIF, TIFF, PNG, PICT, da kuma BMP. Yawancin hotuna bitmap za a iya canzawa zuwa wasu tsarin da aka tsara bitmap sosai sauƙi. Hotunan bitmap suna da yawa da yawa masu girman fayiloli fiye da kayan hotunan fim kuma suna matsawa don rage yawan su. Kodayake yawancin shafuka masu linzamin kwamfuta ne na tushen bitmap, bitmap (BMP) ma wani tsari ne mai zane ko da yake amfani da shi a yau yana da wuya.
Don ƙarin koyo game da albarkatu na bitmaps, cikakkun bayani game da pixels da kuma yadda suka dace cikin haɓakaccen zamani na zamani, zaku so ku duba don ƙarin koyo game da daban-daban fayilolin fayil da aka yi amfani da su a hotunan ku ma kuna son karantawa Fayil Fayil. Tsarin da yafi dacewa don amfani lokacin?
Immala ta Tom Green.
Shafukan Gizon Shafuka
Har ila yau Known As: raster
Karin Magana: bit map BMP