A cikin labarin na gaba zamuyi la'akari da yadda zamu iya duba metadata na hoto daga tashar Ubuntu. Wannan bayanan hoton shine tarin bayanai game da hotunan da aka saka a ciki ko adana su a cikin fayil daban.
Lokacin an kara metadata zuwa hotuna hotuna yawanci ana bibiyan su, suna hana satar abun ciki ko rashin amfani da su. Koyaya, idan muna da sha'awa, zamu iya tuntuɓar, gyara ko kawar da su ta hanya mai sauƙi.
Iri metadata
Za mu sami nau'ikan nau'i uku kamar:
- Kayan fasaha na fasaha Type Wannan nau'in metadata gabaɗaya ya haɗa da bayanan fasaha game da hoto, kamar bayanan kyamara, DPI, saurin rufewa, girman fayil, software da aka yi amfani da ita don ƙirƙirar hoton, kwanan wata da lokacin da aka kama shi ko ƙirƙirar hoton, yanayin hoton da wasu sauran bayanai. Ana samar da metadata ta fasaha musamman ta na'urorin da ke ɗaukar hoto.
- Adididdigar metadata → Wadannan da hannu aka saka ta mai daukar hoto. Maigidan hoton zai iya ƙara su da hannu ta amfani da duk wata software ta waje kamar GIMP ko Photoshop. Wadannan galibi sun haɗa da bayanai kamar taken hoto, wuri, sunan mai ɗaukar hoto, da tsokaci. Adididdigar metadata suna da matukar amfani yayin bincike ko kasida hotuna cikin sauki da sauri.
- Gudanar da metadata Wadannan suna dauke bayanin mai shi da bayanin lamba, lasisi, haƙƙin mallaka da kuma sharuɗan amfani da hotunan.
Duba metadata na hoto daga tashar Ubuntu
A cikin Gnu / Linux zamu iya samun da yawa kayan aiki don karantawa ko gyara metadata na hoto. A gaba zamu ga kayan aikin layin umarni guda uku wanda zamu iya karanta dukkan bayanan hoto.
Amfani da ImageMagick
Gano kayan aiki ne waɗanda aka haɗa a cikin ImageMagick wanda zamu iya tuntuɓar metadata na hoto. Za mu sami wannan software ɗin a cikin tsoffin wuraren ajiyar yawancin rarrabawar Gnu / Linux. Idan muka yi amfani da Debian, Ubuntu ko Linux Mint, abin da kawai za mu yi shi ne buɗe tashar (Ctrl + Alt + T) kuma mu yi amfani da wannan umarnin don shigar da ImageMagick:
sudo apt install imagemagick
Bayan girkawa, yanzu zamu iya bincika metadata na hoto. Don yin wannan, a cikin tashar kawai ku kashe:
identify -verbose imagen.jpg
Wannan umarnin zai nuna mana cikakken kayan aikin metadata na hoton da aka bayar. Idan akwai so duba kawai cikakkun bayanai, kawai zamu kawar da zabin -gwamna. Umurnin zai kasance kamar haka:
identify imagen.jpg
Za a iya samu ƙarin cikakkun bayanai a cikin shafukan mutum:
man identify
Amfani da kayan aikin Exif
Exif amfanin layin umarni ne don nuna da canzawa Bayanin Exif na hoto. Exif yana nufin Tsarin fayil ɗin sauyawa mai sauyawa, wanda shine fayil ɗin hoto da aka rubuta zuwa na'urar ajiyarmu duk lokacin da muka ɗauki hoto tare da wayoyinmu ko kyamararmu.
Bayanan Exif sun hada da cikakkun bayanai kamar kwanan wata da lokaci na hotuna, saitunan kyamara, wurin yanayin wuri, lasisi da bayanan haƙƙin mallaka, da dai sauransu. Wannan kayan aikin shine akwai a cikin tsoffin wuraren ajiyar Debian da dangoginsu kamar Ubuntu. Don shigar da shi, kawai ku rubuta a cikin m (Ctrl + Alt T) kuma rubuta:
sudo apt install exif
Da zarar an shigar da wannan kayan aikin, zamu iya sanya shi aiki ta hanyar aiwatarwa a cikin wannan tashar:
exif imagen.jpg
Exif zai samar da cikakken fitarwa a cikin tsarin shafi wanda aka sanya shi kamar yadda zaku gani a cikin hoton da ya gabata. Domin sami ƙarin cikakkun bayanai game da wannan kayan aikin, duba shafukan mutum daidai:
man exif
Amfani da umarnin fayil
Hakanan zamu iya yi amfani da umarnin fayil don duba metadata na hoto. A cikin tashar za mu rubuta kawai:
file imagen.jpg
Umurnin fayil ba shi da zaɓi don nuna mana cikakken sakamako kamar umarnin da ke sama. Yana buga kwafin metadata na asali kawai.
Idan kana so duba bayani game da wannan umarnin, zaka iya yin shi a cikin shafukan mutum:
man file