GIMP , bilaashka-la-isticmaalka, tifaftiraha sawirada raster-ka isha furan wuxuu siinayaa isticmaalayaasha dhowr siyaabood oo loo sameeyo sawirka midabka madow iyo caddaan. Maqaalkan waxaan kaga hadli doonaa farqiga u dhexeeya sawirada madow iyo caddaanka iyo cawl. Kadib waxaan mari doonaa dhowr siyaabood oo aad u isticmaali karto GIMP^{(use GIMP)} si aad sawirka midabka RGB ugu bedesho qaab cawl ama madow iyo caddaan.

Tababarkan GIMP , waxaan u isticmaalnay noocii ugu dambeeyay ee loo heli karo Microsoft Windows , GIMP 2.10 . Ka soo dejiso GIMP^{(Download GIMP)} for Windows , MacOS , iyo Linux ka gimp.org .

Madow iyo Cadaan vs. Cawlan

Waa maxay farqiga u dhexeeya madow iyo caddaan iyo cawl? Sawir-qaadista madow iyo caddaanka, ereyada waxaa loo istcimaalay si isku beddel ah. Ka fiirso sawirka hoose.

Kani waa sawir midab ah oo ku jira qaabka RGB . Haddii aan ka saarno midabka, waxay u egtahay sidan:

Dadka intooda badan waxay ku sifayn lahaayeen sawirkan aan midab lahayn inuu yahay sawir madow iyo caddaan ah, laakiin ereyga ka sii saxan waa "miisaanka cawl." Iyadoo madow uu yahay midabka kaliya ee loo isticmaalo sawirka, sawirku wuxuu ka kooban yahay noocyo kala duwan oo midabyo cawl ah oo ka soo jeeda caddaan saafi ah ilaa madow saafi ah.

Adduunka tafatirka sawirka, waxaa muhiim ah in la kala saaro midabka cawl iyo madowga runta ah iyo caddaanka, kaas oo isticmaala kaliya madow iyo caddaan oo aan lahayn hadhka cawl. Halkan waxaa ah sawir isku mid ah oo madow iyo caddaan ah.

Talaabada ugu horeysa ee samaynta sawirka madow iyo caddaan ee GIMP waa in la go'aamiyo in loo beddelo sawir madow iyo caddaan ah oo run ah ama in loo beddelo cabbirka cawl. Labadaba hoos ayaan ku soo qaadan doonaa.

Sida Sawirka Midabka loogu beddelo ^(Color)Madaw^{(True Black)} iyo Cadaan^(White) Dhab ah oo ku jira GIMP

Habka GIMP ee loogu beddelo sawirka midabka madow iyo caddaan waxay ku lug leedahay adeegsiga aaladda Threshold .

1. Ku fur sawirkaaga GIMP Waxaan isticmaali doonaa sawirkan laba shimbirood oo midab leh.

1. In the Colors menu, dooro Threshold . Qalabkani wuxuu u rogaa lakabka hadda jira ama xulashada sawir madow iyo caddaan ah. Waa kan sida sawirkayagu hadda u eg yahay.

1. U fiirso slider-ka kanaalka ku jira wada-hadalka ^(Channel)Apply Threshold . U dhaqaaq bidix iyo midig si aad u hagaajisid xadka ilaa aad ka hesho waxa aad aragto.

1. Calaamadee sanduuqa muuqaalka kala qaybsan^(Split) si aad u aragto marinka lagu dabaqay sawirka kala badh si aad ula barbardhigto sawirka midabka asalka ah.

1. Markaad ku qanacdo marinka, dhagsii OK.

Waxa markii hore ahaa sawir midabkiisu dhan yahay hadda waa madow iyo caddaan, oo xitaa uma baahnid inaad iibsato Adobe Photoshop .

Sida Loo Sameeyo Sawirka Grayscale^{(Image Grayscale)} gudaha GIMP

Waxaa jira dhowr siyaabood oo sawirka midabka loogu beddelo miisaan cawl gudaha GIMP .

U^(Convert) beddelo Sawirka ^(Image)Qaabka^{(Grayscale Mode)} Cawliga

Sida ugu dhaqsiyaha badan, ugu fudud ee lagu samayn karo sawirka cawl ee GIMP waa in qaabka midabka dukumentiga loo rogo miisaan cawl.

1. Dooro Sawirka > Qaabka > Cabirka.

4. Sawirka midabkaagu hadda waxa uu ka koobnaan doonaa kaliya pixels madow, caddaan iyo cawl.

Fiiro gaar ah: Markaad sawirka u beddesho miisaan cawl, kuma laaban kartid midabka. Keydi koobiga sawirka midabka ka hor inta aanad bilaabin. Sidoo kale, la soco in beddelka qaabka midabka sawirka ay khusayso sawirka oo dhan, xitaa haddii aad dooratay qayb ka mid ah sawirka oo keliya.

Ku samee^(Make) Miisaanka Cirridka^{(Image Grayscale)} leh Mono Mixer

Si aad u isticmaasho GIMP's Mono Mixer aalada si aad sawirka midabka ugu rogo miisaan, raac tillaabooyinkan:

1. Dooro Colors > Desaturate > Mono Mixer . (Beddelkeeda, midig-guji si aad u hesho xulashooyinka menu la mid ah.)

1. Haddii aad haysato sanduuqa Horudhaca^(Preview) ah ee la saxay, waxaad arki doontaa in sawirka midabku hadda ka muuqdo cabbir cawl.

1. Sida caadiga ah, kanaalka midab kasta waxaa loo dejin doonaa 0.333. Tijaabi beddelka saamiga hal ama in ka badan oo kanaalada ah. Tusaalaha hoose, waxaanu kordhinay jaangooyooyinka isku dhufashada kanaalka cas ilaa 1.826, kanaalka cagaarka ah ee ku dhufanaya 0.930, iyo kanaalka buluuga ah ee 0.686. Hubinta sanduuqa iftiinka ilaalinta^(Preserve) waxay ilaalin doontaa iftiinka heer isku mid ah iyada oo aan loo eegin isbeddellada aad ku sameyso qasiyaha kanaalka.

Sida aad arki karto, hagaajinta kanaalada RGB ee ^(RGB)Mono Mixer waxay sameyn kartaa farqi weyn.

Quusan^(Desaturate) in loo rogo Sawirka Midabka Cawlan^(Color)

Habka saddexaad ee sawirada midabka loogu beddelo miisaan cawl waxay ku lug leedahay hagaajinta dhererka sawirka.

1. Dooro Colors > Desaturate > Desaturate .

1. Isticmaalka qaabka^(Mode) hoos u dhaca, isku day fursadaha kala duwan oo ay ku jiraan Luminance , Luma , Iftiinka^(Lightness) , Celceliska^(Average) , iyo Qiimaha^(Value) . Calaamadee sanduuqa muuqaalka kala qaybsan^(Split) si aad u barbar dhigto sawirka aan dhergin iyo kan asalka ah.

1. Marka aad ku qanacdo natiijada, dhagsii OK.

Sida Loo Isticmaalo Midabka ilaa Qalabka Grey^{(Gray Tool)} ee GIMP

Waxa kale oo aad isticmaali kartaa qalabka Midabka ilaa Gray si aad sawirka ugu beddesho cabbir cawl gudaha GIMP .

1. Dooro Colors > Desaturate > Color ilaa cawl^(Gray) .

1. GIMP ma bixiso wax dukumeenti ah oo ku saabsan waxa dhabta ah ee uu sameeyo Midabka ilaa Gray , laakiin sida aad ka arki karto sawirka hoose, saameyntu way ka farshaxan badan tahay marka loo eego si fudud.

1. Ku tijaabi Radius -ka , Muunadaha^(Iterations) , iyo sliders^(Samples) -ka iyo Sanduuqa hubinta Hadhka^{(Enhance Shadows)} Hadhka si aad u gaadho saamayno kala duwan. Sawirka hoose waxa uu leeyahay goobaha soo socda: Radius – 217, Samples – 5 , and Iterations – 23.

Adeegso Qalabka Hue-Saturation^{(Hue-Saturation Tool)} si aad u Samayso Sawir Cawlan^{(Grayscale Image)} gudaha GIMP

Qalabka Hue-Saturation waa hab kale oo lagu sameeyo sawirka GIMP .

1. Dooro Midabbada> Hue-Saturation.
2. U deji saturation^{(Set Saturation)} ilaa -100 ama u dhaqaaji duleelka dhanka bidix si aad sawirka ugu rogo mid cawl.

1. Guji OK

Sida aad arki karto, waxaa jira siyaabo badan oo loo sameeyo sawirka madow iyo caddaan ee GIMP . Markaad taqaano habab badan, waxaad u badan tahay inaad hesho mid sida ugu fiican ugu shaqeeya sawirka aad tafatirayso.

Samee doorashooyin geesinimo leh

Wax badan oo tafatirka sawirka ah ayaa hoos ugu soo dhaca tijaabo iyo qalad, markaa ha ka baqin inaad sahamiso dhammaan agabka aad gacanta ku hayso-haddii aad isticmaalayso GIMP , Photoshop , ama barnaamij kale oo tafatirka sawirka^{(image editing app)} .

Si aad u bilowdo, isku day casharkayaga ku saabsan abuurista asal hufan GIMP^{(creating a transparent background in GIMP)} halkaas oo aad ku baran doonto sida loo isticmaalo maaskaro lakabka ah. Ama tijaabi plugins loogu talagalay GIMP^{(plugins for GIMP)} kuwaas oo kordhin doona shaqada abka.

How to Make an Image Black and White in GIMP

GIMP, the free-to-use, open source raster graрhics editor gives users several ways to make a color image black and white. In this article we’ll discuss the difference between black & white аnd grаyscale images. Then we’ll go over a few ways you can use GIMP to convert an RGB color image into grayscale mode or black and white.

For this GIMP tutorial, we used the most recent version available for Microsoft Windows, GIMP 2.10. Download GIMP for Windows, MacOS, and Linux from gimp.org.

Black and White vs. Grayscale

What’s the difference between black and white and grayscale? In black and white photography, the terms are used interchangeably. Consider the image below.

This is a color photo in RGB mode. If we remove the color, it looks like this:

Most people would describe this colorless image as a black and white photo, but a more accurate term is “grayscale.” While black is the only color used in the image, the image is composed of a spectrum of shades of gray spanning from pure white to pure black.

In the photo editing world, it’s important to distinguish between grayscale and true black and white, which uses only black and white and no shades of gray. Here’s the same image in true black and white.

The first step to making an image black and white in GIMP is to decide whether to convert it to a true black and white image or to grayscale. We’ll cover both below.

How to Convert a Color Image to True Black and White in GIMP

GIMP’s process for converting a color image into black and white involves using the Threshold tool.

1. Open your image in GIMP. We’ll use this image of two colorful birds.

1. In the Colors menu, select Threshold. This tool turns the current layer or selection into a black and white image. Here’s how our image looks now.

1. Note the Channel slider in the Apply Threshold dialog. Move it left and right to adjust the threshold until you like what you see.

1. Check the Split view box to see the threshold applied to half the image so you can compare it to the original color image.

1. When you’re satisfied with the threshold, click OK.

What was once a full-color image is now purely black and white, and you didn’t even need to buy Adobe Photoshop.

How to Make an Image Grayscale in GIMP

There are several ways to turn a color image into grayscale in GIMP.

Convert the Image to Grayscale Mode

The fastest, easiest way to make a grayscale image in GIMP is to turn the document color mode to grayscale.

1. Select Image > Mode > Grayscale.

4. Your color image will now be composed solely of black, white, and gray pixels.

Note: Once you convert an image to grayscale, you can’t go back to color. Save a copy of the color image before you begin. Also, be aware that changing an image’s color mode applies to the entire image, even if you’ve only selected part of the image.

Make an Image Grayscale with the Mono Mixer

To use GIMP’s Mono Mixer tool to turn a color image to grayscale, follow these steps:

1. Select Colors > Desaturate > Mono Mixer. (Alternatively, right-click to get to the same menu options.)

1. If you have the Preview box checked, you’ll see that the color image now appears in grayscale.

1. By default, each color channel will be set to 0.333. Experiment with changing the ratios for one or more of the channels. In the example below, we’ve increased the settings for the red channel multiplier to 1.826, the green channel multiplier to 0.930, and the blue channel multiplier to 0.686. Checking the Preserve luminosity box will keep the luminosity at the same level no matter what changes you make to the channel mixer.

As you can see, adjusting the RGB channels in the Mono Mixer can make a big difference.

Desaturate to Turn a Color Image to Grayscale

A third method for converting color images to grayscale involves adjusting the image’s saturation.

1. Select Colors > Desaturate > Desaturate.

1. Using the Mode drop-down, try the various options including Luminance, Luma, Lightness, Average, and Value. Check the Split view box to compare the desaturated image with the original.

1. When you’re satisfied with the results, click OK.

How to Use the Color to Gray Tool in GIMP

You can also use the Color to Gray tool to convert an image into grayscale in GIMP.

1. Select Colors > Desaturate > Color to Gray.

1. GIMP doesn’t offer any documentation about what exactly the Color to Gray tool does, but as you can see from the image below, the effect is more artistic than simply desaturating.

1. Experiment with the Radius, Samples, and Iterations sliders and the Enhance Shadows checkbox to achieve different effects. The image below has the following settings: Radius – 217, Samples – 5, and Iterations – 23.

Use the Hue-Saturation Tool to Make a Grayscale Image in GIMP

The Hue-Saturation tool is yet another way to make a grayscale image in GIMP.

1. Select Colors > Hue-Saturation.
2. Set Saturation to -100 or move the slider all the way to the left to turn the image into grayscale.

1. Click OK.

As you can see, there are many ways to make an image black and white in GIMP. By knowing multiple methods, you’re more likely to find one that works best for the image you’re editing.

Make Bold Choices

A lot of image editing comes down to trial and error, so don’t be afraid to explore all the tools at your disposal—whether you’re using GIMP, Photoshop, or another image editing app.

To get started, try our tutorial on creating a transparent background in GIMP where you’ll learn how to use a layer mask. Or experiment with plugins for GIMP that will extend the app’s functionality.

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