Yi Hotuna da Girman Da Kasa da Kyau a Kyau
Ɗaya daga cikin tambayoyin da aka fi yawan tambayoyi game da kayan haɗin gwal shine yadda za a kara yawan girman hoto ba tare da samun lakabi ba. Sabbin masu amfani suna mamaki yayin da suke mayar da hoto da kuma gano cewa ingancin yana da rauni sosai. Masu amfani da kwarewa sun saba da matsalar. Dalilin rashin lalacewa ne saboda bitmapped , ko raster, nau'ikan hoton suna iyakancewa ta hanyar ƙuduri na pixel. Lokacin da ka yi ƙoƙarin mayar da waɗannan nau'ikan hotunan, to lallai software ɗinka ya kara girman kowane pixel - wanda ya haifar da hoto mai haɗari - ko kuma dole ne ya "yi tsammani" a hanya mafi kyau don ƙara pixels zuwa hoton don ya ƙara girma .
Ba da daɗewa ba, ba a da yawa zaɓuɓɓuka don ƙara ƙuduri ba fiye da yin amfani da hanyoyin gyarawa ta hanyar gyarawa. A yau, mun fuskanci damar da za mu iya kasancewa gaba daya. Tabbas, yana da kyau mafi kyau don kama ƙuduri da kake buƙatar dama daga farkon. Idan kana da wani zaɓi don canza hoto a ƙuduri mafi girma, ta kowane hali, ya kamata ka yi haka kafin ka koma ga mafitacin software. Kuma idan kana da kuɗin da za a saka a cikin kyamara wanda ya fi dacewa da shawarwari, za ka iya ganin cewa an kashe kudi fiye da idan ka sanya shi a cikin wani bayani na software. Bayan ya faɗi haka, akwai sau da yawa sau da ba za ka sami wani zabi ba fiye da zuwa ga software. Lokacin da lokaci ya zo, ga bayanin da ya kamata ka sani.
Resizing vs. Resampling
Yawancin software kawai yana da umarnin guda biyu don sake dawowa da kuma resampling. Sake mayar da hoto ya haɗa da canza canje-canje ba tare da canza yawan jigilar pixel ba. Yayin da ƙuduri ya ƙara ƙaruwa, girman bugawa ya zama ƙarami, kuma a madadin haka. Lokacin da ka ƙara ƙuduri ba tare da canza pixel girma ba, babu asara a cikin inganci, amma dole ne ka miƙa girman bugawa. Sake mayar da hoton ta amfani da resampling, duk da haka, ya shafi canza launin pixel girma kuma zai gabatar da wani asara a cikin inganci. Wancan ne saboda resampling yana amfani da tsarin da ake kira interpolation don kara girman girman hoto. Tsarin haɗin yana ƙayyade dabi'u na pixels software yana buƙatar ƙirƙirar bisa ga pixels da ke akwai a cikin hoton. Maimaitawa ta hanyar hulɗa yana haifar da mummunar damuwa na hoto, musamman ma a yankunan da akwai layi mai tsabta da bambancin canji a launi.
• Game da Girman Hotuna & Sakamako
Wani bangare na wannan batu shine tashi daga cikin wayoyin da kwamfutar hannu da kuma mayar da hankali akan pixel na'urar. . Wadannan na'urori sun ƙunshi nau'i biyu zuwa uku a cikin sararin samaniya wanda ke ɗauke da ɗaya pixel akan allon kwamfutarka. Matsar da hoto daga kwamfutarka zuwa na'urar yana buƙatar ka ƙirƙirar nau'i iri iri na siffar guda (misali 1X, 2X da 3X) don tabbatar da sun nuna daidai a kan na'urar. Shin mutum yana ƙara girman hoton ko ƙara yawan pixels.
Hanyar Hanya Kasuwanci
Mai sarrafa gyaran hoto yana bayar da hanyoyi daban-daban don yin lissafin sababbin pixels lokacin da hoton mu ya sama. A nan ne kwatancen hanyoyin uku da suke samuwa a Photoshop. Idan ba ku yi amfani da Photoshop ba, software ɗinku yana iya samar da irin waɗannan nau'i-nau'i, kodayake suna iya amfani da kalmomi daban daban.
- Bicubic shi ne jinkirin amma yana samar da mafi kyawun kimanin sababbin nau'in pixel.
- Bilinear yana da sauri fiye da bicubic, amma yana da rashin aiki. Dukkanin layi da linzami ya haifar da wani hoto mara kyau, musamman lokacin da yake upsampling.
- Neighborne mafi kusa ba ya amfani da haɗin kai. Yana kawai ɗaukar nauyin pixels masu kusa da kuma ƙara sababbin pixels ba tare da yada su ba. Wannan shi ne lokacin da ka samu jaggies ko mataki-mataki sakamako.
Lura cewa akwai fiye da kawai waɗannan hanyoyi guda uku na interpolation kuma ko da amfani da wannan hanya a cikin daban-daban software iya samar da sakamakon daban-daban. A cikin kwarewa, na gano cewa Photoshop yana bada kyakkyawar hulɗa tsakanin kowane software da na kwatanta.
- Hoton Hoton Hotunan Hotunan Hoton Hotuna
- Yi Amfani da Magana mafi Girma A lokacin da Zaɓuɓɓuka cikin Hotunan Hotuna da Photoshop
Sauran Hanyoyi
Bayanan wasu shirye-shiryen haɓaka hotunan na samar da wasu algorithms wanda ke da'awar yin aiki mafi kyau fiye da yadda hanyoyin Photoshop ke yi. Wasu daga cikinsu sune Lanzcos , B-spline , da Mitchell . Wasu shirye-shiryen da ke samar da waɗannan matakan mahimmanci sune Qimage Pro, IrfanView (mai neman hotunan kyauta), da Tsabtace Hotuna. Idan software ɗinka na ba da ɗaya daga cikin algorithms na resampling ko wani wanda ba a ambata a nan ba, dole ne ka gwada su tare da su don ganin wanda ya ba ka sakamakon mafi kyau. Kuna iya gane cewa hanyoyin sadarwa tsakanin juna sun samar da sakamako mafi kyau dangane da hoton da aka yi amfani dasu.
Hadin Hanya
Wasu masu goyon bayan sun gano cewa zaka iya samun sakamako mafi kyau yayin da aka ƙaura ta hanyar ƙara girman girman girman ƙananan ƙananan ƙananan ƙari maimakon mataki ɗaya. Wannan ƙirar ake kira tsaka-tsalle. Ɗaya daga cikin amfani don yin amfani da tsangwama mai tsayi shi ne cewa zai yi aiki a kan hotunan hotuna 16-bit kuma baya buƙatar ƙarin software banda wani mai gyara hoto, kamar Photoshop. Ma'anar tsinkayar matakan hawa mai sauƙi ne mai sauki: maimakon yin amfani da umurnin girman girman hoto don zuwa kai tsaye daga 100% zuwa 400%, zaku yi amfani da umurnin girman girman hoto kuma ku ƙara kawai, ku ce, 110%. Sa'an nan kuma za ku maimaita umarnin sau da yawa kamar yadda yake so don samun girman da kuke bukata. A bayyane yake, wannan zai iya zama dadi idan kwamfutarka ba ta da damar yin aiki ta atomatik. Idan kun yi amfani da Photoshop 5.0 ko mafi girma, za ku iya sayen aikin Fred Miranda ta hanyar haɗin kai don $ 15 US daga haɗin da ke ƙasa. Zaka kuma sami karin bayani da kwatankwacin hoto. Tun lokacin da aka rubuta wannan labarin, an kirkiro sababbin abubuwan algorithms da fasaha na zamani wanda ya sa matakan tayar da hanyoyi ba su da yawa.
- Matakan Hotuna na Hotuna na FM da Ayyukan Photoshop
Gaskiya Fractals
LizardTech na Gaskiya Fractals software (wanda ya kasance daga Altamira Group) yayi ƙoƙari ya karya ta ƙayyadaddun tasirin hotunan tare da fasahar ƙwarewar da aka yi nasara a kan kyauta. Gaskiya Fractals yana samuwa ga Windows da Macintosh. Yana aiki a matsayin mai shiga zuwa Photoshop da sauran hotuna Photoshop-a cikin masu gyara hotuna. Tare da shi, zaka iya ƙyamar ƙananan fayilolin ƙirar matsakaici zuwa ma'auni, kyauta marar iyaka wanda ake kira STiNG (* .stn). Wadannan fayilolin STN za a iya buɗewa a kowane ƙuduri da ka zaɓa.
Har zuwa kwanan nan, wannan fasaha ita ce mafi kyawun ku don kara ƙuduri. Yau, kyamarori da kuma samfurori sun sami mafi alhẽri kuma suka sauko cikin farashin, kuma zuba jari a cikin Gaskiya Fractals ba sauƙi ba ne kamar yadda ya kasance. Idan kana da wani zaɓi na saka kuɗin ku a cikin kayan aiki mafi kyau maimakon matsalolin software, yawanci shine mafi kyawun hanyar tafi. Duk da haka, saboda matsanancin matsala, Gaskiya Fractals ne mai ban mamaki. Har ila yau yana bayar da wasu amfani kamar ƙananan fayilolin da aka ƙulla don ɗawainiya da ajiya. Bi hanyar haɗin da ke ƙasa don cikakken cikakken bayani da kuma kwatanta na Fractals na Gaskiya.
- Gaskiya Fractals Review
Alien Skin Blow Up
Kodayake Fractals na gaskiya shine jagoran farko a fasaha mai zurfi, a yau Allan Skin Blow Up plugin for Photoshop yana da kyau a duba idan matsanancin fadada abu ne da kake bukata. Buga Up yana goyan bayan mafi yawan hotunan hotunan, ciki har da hotuna mai zurfi-zurfin. Yana da ikon sake mayar da hotuna ba tare da shimfiɗa ba, da kuma zaɓuɓɓuka don sake mayar da hankali a wurin, ko a matsayin sabon hoton. Blow Up yana amfani da hanyar ƙwarewa na musamman da nau'in fim din da aka ƙera don inganta bayyanar ƙararraki.
Ƙarin Software da Plug-ins
Sabbin abubuwan da ake faruwa a wannan yanki a duk tsawon lokaci kuma tare da mutane da yawa suna ƙoƙarin samun mafi kyawun kayan aiki, bazai iya jinkirin kowane lokaci ba. Don samfurin sabuntawa na samfurin software na yau da kullum wanda aka tsara don ƙwanƙasa hoton ɗaukar hoto, ziyarci mahaɗin da ke ƙasa.
- Software da Plug-ins don Karin Ƙarin Hotuna
Ƙididdigar Ƙira
A yayin da kake yin la'akari da waɗannan hanyoyi don ƙara ƙuduri a kansa, yi ƙoƙarin kauce wa kamawa da yadda hotuna suke kallon allo. Ayyukan bugunanku za su yi taka muhimmiyar rawa a sakamakon karshe. Wasu kwatancen na iya bayyana da bambanci daban-daban a kan allon, amma kawai an gane lokacin da aka buga. Koyaushe yin hukunci na karshe bisa ga sakamakon da aka buga.
Ku shiga cikin Tattaunawa: "Ban taɓa tunanin ƙaddamar da ƙuduri kamar yadda zai iya inganta yanayin hoton ba. Shin akwai wani abu da na kasa la'akari?" - Louis
Immala ta Tom Green