Le mhlahlandlela izokubonisa ukuthi ungasebenzisa kanjani izithombe usebenzisa umugqa we-Linux umyalo .
Uzothola ukuthi ungashintsha kanjani isithombe kokubili ngokwesiko sefayili nasesikhathini. Uzofunda nokuthi ungaguqula kanjani phakathi kwezinhlobo eziningi zefayela ezifana ne- JPG kuya ku- PNG noma i- GIF kuya ku- TIF .
I-Convert Command
Umyalo wokuguqula usetshenziselwa ukuguqula isithombe. Ifomethi ifana nalokhu:
guqula [ongakhetha kokufaka] ifayela lokufakwayo [okukhipha okukhethwa kukho] ifayela elikhiphayo.
Indlela Yokuvuselela Isithombe
Uma uzofaka isithombe ekhasini lewebhu futhi ufuna ukuba libe usayizi othile bese ungasebenzisa i-CSS ukuze uguqule isithombe.
Kungcono ngempela ukuthi ulayishe isithombe njengesayizi elungile endaweni yokuqala bese uyifaka ekhasini.
Lesi yisibonelo esisodwa nje ukuthi kungani ungafuna ukushintsha usayizi wesithombe .
Ukuze ushintshe isithombe usebenzisa umyalo olandelayo
guqula imagename.jpg -resize ubukhulu newobrazame.jpg
Isibonelo, ukuguqula isithombe sibe ngu-800x600 ungasebenzisa umyalo olandelayo:
guqula i-imagename.jpg -resize i-800x600 entshaEND_A_1
Uma ngokuguqula ekulinganisweni okucacisiwe ububanzi besici buyokwenziwa umonakalo isithombe sizoshintshwa kwisilinganiso esiseduze.
Ukuphoqelela ukuguqulwa kube usayizi oluqondile, sebenzisa umyalo olandelayo:
guqula i-imagename.jpg -resize 800x600! newobrazame.jpg
Awudingi ukucacisa ukuphakama nobubanzi njengengxenye yomyalo wokuguqula.
Isibonelo, uma ufuna ububanzi bube ngu-800 futhi ungakhathazeki ngokuphakama ungasebenzisa umyalo olandelayo:
guqula imagename.jpg -resize 800 new.jpgame.jpg
Ukuze ushintshe isithombe ukuthi ubude obucacisiwe sebenzisa umyalo olandelayo:
guqula isithombe, jpg-khipha x600 new.jpgame.jpg
Indlela Yokuguqula Kusuka Kufomethi Yomfanekiso Omunye kuya Kwenye
Uma unefayela le-JPG futhi ufisa ukuyiguqula ibe yi-PNG bese usebenzisa umyalo olandelayo:
guqula image.jpg image.png
Ungahlanganisa amafomethi amaningi efayela. Ngokwesibonelo
guqula isithombe.png image.gif
guqula isithombe.jpg image.bmp
guqula isithombe.gif image.tif
Indlela Yokuguqula Usayizi Wefayela Wezithombe
Kunezindlela eziningi zokushintsha usayizi wefayela wesithombe somfanekiso.
- Shintsha isilinganiso sesici (senze sibe sincane)
- Shintsha ifomethi yefayela
- Shintsha ikhwalithi yokucindezela
Ukunciphisa usayizi wesithombe kuzokwenza usayizi wefayela ube mncane. Ngaphezu kwalokho, ukusebenzisa ifomethi yefayela efaka ukucindezelwa okunjenge-JPG kuzokusiza ukuba unciphise usayizi wefayela lomzimba.
Ekugcineni ukulungiswa kwekhwalithi kuzokwenza ukuthi usayizi wefayela lomzimba lube mncane.
Izigaba ezimbili ezedlule zikubonise ukuthi ungashintsha kanjani usayizi nohlobo lwefayela. Ukucindezela isithombe zama umyalo olandelayo:
guqula imagename.jpg -quality 90 newimage.jpg
Ikhwalithi ichazwa njengephesenti. I-low percent iphesenti encane ifayili yokukhipha kodwa kusobala ukuthi izinga lokugcina lokuphuma aliyona into enhle.
Indlela Yokuguqula Izithombe
Uma uthathe isithombe ku-portrait kodwa ufuna ukuthi ube umfanekiso wesimo sezwe ungashintsha isithombe usebenzisa umyalo olandelayo:
guqula imagename.jpg -rotate 90 entshaimage.jpg
Ungacacisa noma iyiphi i-angle yokujikeleza.
Isibonelo, zama lokhu:
guqula imagename.jpg -rotate 45 entshaimage.jpg
Shintsha Izinketho Zomlayini Wokulawula
Kukhona izinketho eziningi zemigqa yomyalo ezingasetshenziswa ngomyalo wokuguqula njengoba kuboniswe lapha:
Izinketho zicutshungulwa ku-oda lomyalo womyalo. Noma yikuphi okukhethile okushiwo emgqeni womyalo kuqhubeka ukusebenza kweqoqo lezithombe ezilandelayo, kuze kube yilapho isethi inqanyulwa ukubukeka kwanoma yikuphi ukukhetha noma -noop . Ezinye izinketho zithinta kuphela ukucaciswa kwezithombe nabanye kuphela ukufaka ikhodi. Lokhu kungabonakala ngemuva kweqembu lokugcina lezithombe zokufaka.
Ukuze uthole incazelo eningiliziwe yenketho ngayinye, bona i- ImageMagick .
| -adjoin | faka izithombe zibe ifayela elilodwa le-multi-image |
| -affine | ukudweba ukuguqulwa kwesisu |
| -antialias | susa i-pixel aliasing |
| -iphendule | faka isethi yezithombe |
| -isilinganiso | isilinganiso setethi yezithombe |
| -ukubuya | umbala wangemuva |
| -blur x | fipha isithombe nomsebenzisi we-gaussia |
| -border x | zungeze isithombe ngomngcele wombala |
| -bordercolor | umbala osemngceleni |
| -bhokisi | setha umbala webhokisi lokubophezela i-annotation |
| -cache | ama-megabytes yememori atholakalayo ku-cache ye-pixel |
| -Umzila | uhlobo lwesiteshi |
| -charcoal | fanisa umdwebo wamalahle |
| -chofoza x {+ -} {+ -} {%} | susa ama-pixels ukusuka ngaphakathi kwesithombe |
| -clip | sebenzisa indlela yokusika, uma umuntu ekhona |
| -coalesce | hlanganisa ukulandelana kwezithombe |
| -colorize | colorize isithombe nombala wepeni |
| -color | inombolo ekhethiwe yemibala esithombeni |
| -colorspace | uhlobo lwebalabala |
| -comment | chaza isithombe ngokuphawula |
| -kuqamba | uhlobo lokubunjwa kwesithombe |
| -compress | uhlobo lokucindezela isithombe |
| -ngaphandle | ukuthuthukisa noma ukunciphisa ukuhluka kwesithombe |
| -crop x {+ -} {+ -} {%} | usayizi okhethwayo nendawo yesithombe esinqunyiwe |
| -cycle | susa isithombe sombala ngomumo |
| -debug | nika amandla ukuphrinta ukuphrinta |
| -deconstruct | ukuphulukisa ukulandelana kwesithombe ezindaweni ezingezansi |
| -delay <1 / 100ths yesibili> | bonisa isithombe esilandelayo ngemva kokumisa okwesikhashana |
| ubukhulu x | isinqumo esiqondile nesingqimba kuma-pixels wesithombe |
| -depth | ukujula kwesithombe |
| -despeckle | ukunciphisa ama-speckles ngaphakathi kwesithombe |
| -display | ucacisa iseva ye-X ukuxhumana naye |
| -kubeka phansi | Indlela yokulahla kwe-GIF |
| -lapha | faka ukwephulwa kwephutha le-Floyd / Steinberg esithombeni |
| -rhola | chaza isithombe ngomunye oyedwa noma ngaphezulu wezibalo zemifanekiso |
| -edge | thola imiphetho ngaphakathi kwesithombe |
| -embozi | emboss isithombe |
| -ukubhala | ucacise ikhodididi yefonti |
| -yodwa | cacisa i-endianness (MSB noma i-LSB) yomkhiqizo wesithombe |
| -ukuthuthukisa | sebenzisa isihlungi sedijithali ukuthuthukisa isithombe somsindo |
| -linganisa | yenza i-histogram equalization esithombeni |
| -fill | umbala ongayisebenzisa uma ugcwalisa umdwebo othomayo |
| -filter | sebenzisa lolu hlobo lokuhlunga uma ushintsha isithombe |
| -flatten | sithatha ukulandelana kwezithombe |
| -flip | dala "isithombe esibukweni" |
| -flop | dala "isithombe esibukweni" |
| -font | sebenzisa leli fayela uma usichaza isithombe ngombhalo |
| -frame x ++ | zizungeze isithombe ngomngcele wokuhlobisa |
| -fuzz {%} | Imibala ngaphakathi kwalolu daba ibhekwa njengalingana |
| -gamma | izinga lokulungiswa kwe-gamma |
| -gaussian x | fipha isithombe nomsebenzisi we-gaussia |
| -geometry x {+ -} {+ -} {%} {@} {!} {<} {>} | usayizi okhethwayo nendawo yefasitela lesithombe. |
| -ukuziphatha | isiqondisi esinqunyiwe sithinta lapho usichaza isithombe. |
| -Usizo | phrinta imiyalelo yokusetshenziswa |
| -implode | faka amaphikseli wesithombe mayelana nendawo |
| -ngena | sebenzisa lolu hlobo lokunikeza inhloso uma ulawula umbala wesithombe |
| -ngaphakathi | uhlobo lohlelo lokuphambana |
| -label | nika ilebula esithombeni |
| -level | hlela izinga lokungafani kwesithombe |
| -list | uhlobo lohlu |
| -loop | engeza isandiso se-Netscape loop kuya ku-GIF izithombe zakho |
| -map | khetha isethi ethile yemibala kusuka kulo mfanekiso |
| -mask | Cacisa imaski yokuchofoza |
| -matte | gcina isiteshi se-matte uma isithombe sinye |
| -median | sebenzisa isihlungi esiphakathi esithombeni |
| -modulate | ukushintsha ukukhanya, ukugcwalisa, kanye ne-hue yesithombe |
| -monochrome | guqula isithombe sibe mnyama nomhlophe |
| -morph | iqukethe ukulandelana kwesithombe |
| -mosaic | dala i-mosaic kusuka ekulandeleni kwesithombe |
| -negate | shintsha wonke amaphikseli nombala walo ohambisanayo |
| -nisa | engeza noma ukunciphisa umsindo esithombeni |
| -noop | NOOP (akukho okukhethwa kukho) |
| -memezele | guqula isithombe ukuze unikeze ububanzi obugcwele bamanani ombala |
| -opaque | shintsha lo mbala kumbala wepeni ngaphakathi kwesithombe |
| - ikhasi x {+ -} {+ -} {%} {!} {<} {>} | ubukhulu nendawo yesikhumba sesithombe |
| -iphayinti | fanisa umdwebo wamafutha |
| -pen | ucacise umbala wepeni wokudweba imisebenzi |
| -ping | shintsha ngokucacile izici zesithombe |
| -ngena | ukuphawula kwe-PostScript, OPTION1, noma ifonti ye-TrueType |
| -ukuhlola | uhlobo lokubuka kuqala kwesithombe |
| -ukusebenza | sebenzisa ukulandelana kwezithombe |
| -profile | engeza i-ICM, i-IPTC, noma iphrofayli yesizukulwane esithombeni |
| -ngalingani | Izinga lokucindezela i-JPEG / MIFF / PNG |
| -raise x | ukukhanyisa noma ukufiphaza imiphetho yesithombe |
| -izwe x {+ -} {+ -} | sebenzisa izinketho engxenyeni yesithombe |
| -buyisela x {%} {@} {!} {<} {>} | shintsha isithombe |
| -roll {+ -} {+ -} | hamba isithombe ngokuqondile noma ngokuzungezile |
| -susa {<} {>} | sebenzisa ukushintshwa kwesithombe se-Paeth esithombeni |
| -sibonelo | umfanekiso wesilinganiso nge-pixel sampling |
| -sampula_sifakisi x | izibonelo zesampuli ezisetshenziselwa i-JPEG noma i-MPEG-2 encoder kanye ne-YUV encoder / encoder. |
| -scale | ukukala isithombe. |
| -sene | setha inombolo yesimo |
| -sekelwe | inombolo ye-generator-random number generator value value |
| -sekela x | ingxenye yesithombe |
| -shada x | thuthukisa isithombe usebenzisa umthombo wokukhanya ode |
| -sharpen x | hlaziya isithombe |
| -shave x | shayela amaphikseli kusukela emaphethelweni wesithombe |
| -shesha x | shear isithombe ngezansi kwe-X noma Y axis |
| -siza x {+ offset} | ububanzi nokuphakama kwesithombe |
| -ukuhlehlisa | unqabe wonke amaphikseli ngaphezulu kwezinga lembundu |
| -ngena | susa amaphikseli wesithombe ngenani elingavamile |
| -siphazamisi | umbala ongayisebenzisa uma uhlahlela isithombe esibucayi |
| -strokewidth | setha ububanzi be-stroke |
| -swirl | amaphikseli wesithombe se-swirl mayelana nendawo |
| -texture | igama lokuthungatha ukuze ulandise ngemuva kwesizinda sesithombe |
| -threshold | khubaza isithombe |
| -tile | tile isithombe lapho ugcwalisa umdwebo obalulekile |
| -transform | guqula isithombe |
| -ngaphandle | yenza lo mbala obala ngaphakathi kwesithombe |
| -treedepth | ukujula kwesihlahla ukulungiswa kombala we-algorithm |
| -trim | qeda isithombe |
| -yodwa | uhlobo lomfanekiso |
| -ununithi | uhlobo lwesinqumo sesithombe |
| -unsharp x | hlaziya isithombe nomqhubi womaski ongasebenzi |
| -use_pixmap | sebenzisa i-pixmap |
| -verbose | phrinta ulwazi oluningiliziwe mayelana nesithombe |
| -buka | I-FlashPix yokubuka imingcele |
| -wave x | guqula isithombe eceleni kwe-sine wave |
| -ubhale | bhala ukulandelana kwesithombe [ guqula, ukuhlanganiswa ] |
Ukuze uthole ulwazi oluthe xaxa funda ikhasi lebhuku lomyalo wokuguqula.