How To Change From Grayscale To Color In Photoshop

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In Photoshop you can easily create an image in one color mode and convert information technology to another, possibly to become information technology ready for a specific impress chore.

Convert an image to another color mode

You tin modify an image from its original mode (source fashion) to a unlike mode (target way). When you cull a dissimilar color manner for an image, you permanently change the color values in the image. For example, when you convert an RGB paradigm to CMYK mode, RGB color values exterior the CMYK gamut (divers by the CMYK working space setting in the Color Settings dialog box) are adjusted to fall inside gamut. Every bit a result, some prototype data may exist lost and can't exist recovered if yous convert the image from CMYK dorsum to RGB.

Earlier converting images, information technology'southward best to do the following:

Practise as much editing as possible in the original paradigm style (normally RGB for images from virtually scanners or digital cameras, or CMYK for images from traditional drum scanners or imported from a Scitex system).
Salvage a fill-in copy earlier converting. Be sure to save a copy of your paradigm that includes all layers so that yous can edit the original version of the prototype after the conversion.
Flatten the file before converting it. The interaction of colors between layer blending modes changes when the way changes.

In most cases, y'all'll desire to flatten a file before converting it. However, information technology isn't required and, in some cases, it isn't desirable (for example, when the file has vector text layers).

Choose Prototype > Mode and the style yous want from the submenu. Modes non available for the agile paradigm appear dimmed in the menu.

Images are flattened when converted to Multichannel, Bitmap, or Indexed Color manner, because these modes do not support layers.

Convert an image to Bitmap way

Converting an epitome to Bitmap way reduces the image to two colors, greatly simplifying the color data in the image and reducing its file size.

When converting a color image to Bitmap mode, commencement convert information technology to Grayscale mode. This removes the hue and saturation data from the pixels and leaves just the brightness values. Still, because simply a few editing options are available for Bitmap mode images, it's usually best to edit the prototype in Grayscale mode and then convert information technology to Bitmap mode.

Images in Bitmap mode are 1 bit per channel. Yous must convert a 16‑ or 32‑bits-per-channel epitome to viii‑bit Grayscale mode before converting it to Bitmap style.

If the prototype is in colour, choose Epitome > Way > Grayscale. Then cull Image > Mode > Bitmap.
If the paradigm is grayscale, choose Image > Mode > Bitmap.

For Output, enter a value for the output resolution of the Bitmap mode image, and choose a unit. By default, the current image resolution appears as both the input and the output resolutions.

Choose one of the following bitmap conversion methods from the Use pop-upward carte du jour:

fifty% Threshold

Converts pixels with gray values above the heart gray level (128) to white and pixels with gray values below that level to black. The result is a very high-contrast, black-and-white representation of the image.

Design Dither

Converts an image past organizing the gray levels into geometric configurations of black and white dots.

Diffusion Dither

Converts an image by using an fault-diffusion process, starting at the pixel in the upper-left corner of the prototype. If the pixel's value is higher up middle gray (128), the pixel is changed to white—if below information technology, to black. Because the original pixel is rarely pure white or pure black, error is inevitably introduced. This mistake is transferred to surrounding pixels and diffused throughout the epitome, resulting in a grainy, picture-like texture.

Halftone Screen

Simulates the appearance of halftone dots in the converted image. Enter values in the Halftone Screen dialog box:

For Frequency, enter a value for the screen frequency, and cull a unit. Values tin can range from i.000 to 999.999 for lines per inch and from 0.400 to 400.00 for lines per centimeter. Yous can enter decimal values. The screen frequency specifies the ruling of the halftone screen in lines per inch (lpi). The frequency depends on the paper stock and blazon of press used for printing. Newspapers commonly use an 85‑line screen. Magazines utilize higher resolution screens, such as 133‑lpi and 150‑lpi. Check with your print shop for correct screen frequencies.
Enter a value for the screen angle in degrees from ‑180 to +180. The screen angle refers to the orientation of the screen. Continuous-tone and blackness-and-white halftone screens commonly utilise a 45° angle.
For Shape, choose the dot shape you desire.

The halftone screen becomes part of the paradigm. If you print the image on a halftone printer, the printer volition use its own halftone screen also as the halftone screen that is part of the image. On some printers, the upshot is a moiré blueprint.

Custom Blueprint

Simulates the appearance of a custom halftone screen in the converted image. Cull a design that lends itself to thickness variations, typically one with a variety of grey shades.

To use this option, you first ascertain a blueprint and then screen the grayscale paradigm to utilise the texture. To comprehend the entire image, the pattern must be equally large as the image. Otherwise, the blueprint is tiled. Photoshop comes with several cocky-tiling patterns that can be used every bit halftone screen patterns.

To prepare a blackness-and-white pattern for conversion, first convert the image to grayscale and and then apply the Blur More filter several times. This blurring technique creates thick lines tapering from dark gray to white.

Photoshop convert image to bitmap mode — Original grayscale paradigm, and 50% Threshold conversion method

Photoshop Pattern Dither conversion method — Pattern Dither conversion method, and Diffusion Dither conversion method

Convert a color photograph to Grayscale mode

Open the photo you want to convert to black-and-white.

Choose Image > Mode > Grayscale.

Click Discard. Photoshop converts the colors in the prototype to black, white, and shades of gray.

The technique in a higher place minimizes file size but discards color information and tin can convert adjacent colors to the exact same shade of gray. Using a Black & White adjustment layer increases file size but retains colour information, letting you map colors to shades of gray.

Catechumen a Bitmap mode image to Grayscale manner

You can convert a Bitmap mode paradigm to Grayscale mode in order to edit it. Proceed in listen that a Bitmap style image edited in Grayscale way may not await the same when you lot catechumen it dorsum to Bitmap fashion. For example, suppose a pixel that is blackness in Bitmap mode is edited to a shade of gray in Grayscale mode. When the image is converted back to Bitmap mode, that pixel is rendered as white if its grayness value is above the middle gray value of 128.

Choose Epitome > Mode > Grayscale.

Enter a value between one and xvi for the size ratio.

The size ratio is the factor for scaling down the image. For instance, to reduce a grayscale epitome by 50%, enter two for the size ratio. If you enter a number greater than ane, the programme averages multiple pixels in the Bitmap mode image to produce a single pixel in the grayscale image. This process lets you generate multiple shades of gray from an image scanned on a i‑bit scanner.

Convert a grayscale or RGB image to indexed color

Converting to indexed color reduces the number of colors in the image to at most 256—the standard number of colors supported by the GIF and PNG‑8 formats and many multimedia applications. This conversion reduces file size by deleting color information from the epitome.

To catechumen to indexed color, you must start with an image that is viii bits per channel and in either Grayscale or RGB fashion.

Choose Paradigm > Fashion > Indexed Colour.

All visible layers will be flattened; whatever hidden layers will exist discarded.

For grayscale images, the conversion happens automatically. For RGB images, the Indexed Color dialog box appears.

Select Preview in the Indexed Color dialog box to brandish a preview of the changes.

Specify conversion options.

Conversion options for indexed-color images

When converting an RGB image to indexed colour, you can specify a number of conversion options in the Indexed Color dialog box.

Palette Type

A number of palette types are available for converting an image to indexed color. For the Perceptual, Selective, and Adaptive options, you can choose using a local palette based on the current image'south colors. These are the available palette types:

Exact

Creates a palette using the exact colors appearing in the RGB image—an pick bachelor only if the epitome uses 256 or fewer colors. Because the image's palette contains all colors in the prototype, there is no dithering.

Organization (Mac OS)

Uses the Mac Os default 8‑bit palette, which is based on a uniform sampling of RGB colors.

Organisation (Windows)

Uses the Windows organization's default viii‑bit palette, which is based on a uniform sampling of RGB colors.

Web

Uses the 216-colour palette that web browsers, regardless of platform, use to display images on a monitor limited to 256 colors. This palette is a subset of the Mac OS 8‑bit palette. Utilise this option to avoid browser dither when viewing images on a monitor display limited to 256 colors.

Uniform

Creates a palette by uniformly sampling colors from the RGB color cube. For example, if Photoshop takes half dozen evenly-spaced color levels each of red, light-green, and blue, the combination produces a uniform palette of 216 colors (half dozen cubed = vi ten 6 x six = 216). The total number of colors displayed in an image corresponds to the nearest perfect cube (8, 27, 64, 125, or 216) that is less than the value in the Colors text box.

Local (Perceptual)

Creates a custom palette by giving priority to colors for which the human eye has greater sensitivity.

Local (Selective)

Creates a color table similar to the Perceptual color table, merely favoring broad areas of color and the preservation of web colors. This option usually produces images with the greatest colour integrity.

Local (Adaptive)

Creates a palette past sampling the colors from the spectrum appearing most commonly in the image. For example, an RGB image with only the colors dark-green and blue produces a palette made primarily of greens and dejection. About images concentrate colors in detail areas of the spectrum. To command a palette more than precisely, commencement select a part of the image containing the colors you want to emphasize. Photoshop weights the conversion toward these colors.

Master (Perceptual)

Creates a custom palette by giving priority to colors for which the human eye has greater sensitivity. Applies when you take multiple documents open; takes all open documents into account.

Master (Selective)

Creates a colour table similar to the Perceptual color table, but favoring wide areas of color and the preservation of web colors. This choice commonly produces images with the greatest colour integrity. Applies when you take multiple documents open up; takes all open documents into account.

Master (Adaptive)

Creates a palette by sampling the colors from the spectrum appearing near commonly in the epitome. For case, an RGB paradigm with only the colors light-green and blue produces a palette made primarily of greens and dejection. Virtually images concentrate colors in particular areas of the spectrum. To control a palette more than precisely, first select a part of the image containing the colors you want to emphasize. Photoshop weights the conversion toward these colors. Applies when you accept multiple documents open; takes all open documents into business relationship.

Custom

Creates a custom palette using the Color Tabular array dialog box. Either edit the color table and save it for later on use or click Load to load a previously created color table. This option also displays the electric current Adaptive palette, which is useful for previewing the colors nigh often used in the paradigm.

Uses the custom palette from the previous conversion, making it easy to convert several images with the aforementioned custom palette.

Number Of Colors

For the Uniform, Perceptual, Selective, or Adaptive palette, you can specify the exact number of colors to be displayed (up to 256) by entering a value for Colors. The Colors text box controls only how the indexed color tabular array is created. Adobe Photoshop all the same treats the image as an 8‑bit, 256‑color epitome.

Color Inclusion And Transparency

To specify colors to be included in the indexed color table or to specify transparency in the image, cull from the following options:

Forced

Provides options to forcefulness the inclusion of certain colors in the color table. Black And White adds a pure blackness and a pure white to the colour table; Primaries adds red, green, blue, cyan, magenta, yellow, black, and white; Spider web adds the 216 web‑safe colors; and Custom lets yous define custom colors to add.

Transparency

Specifies whether to preserve transparent areas of the image during conversion. Selecting this pick adds a special index entry in the color table for transparent colors. Deselecting this option fills transparent areas with the matte colour, or with white if no matte color is called.

Matte

Specifies the groundwork color used to fill anti-aliased edges that lie next to transparent areas of the paradigm. When Transparency is selected, the matte is applied to edge areas to help alloy the edges with a web background of the same colour. When Transparency is deselected, the matte is applied to transparent areas. Choosing None for the matte creates hard-edged transparency if Transparency is selected; otherwise, all transparent areas are filled with 100% white. The image must have transparency for the Matte options to exist available.

Dithering

Unless you're using the Verbal colour table pick, the color tabular array may not contain all the colors used in the prototype. To simulate colors not in the color table, you can dither the colors. Dithering mixes the pixels of the available colors to simulate the missing colors. Choose a dither selection from the menu, and enter a percent value for the dither amount. A higher corporeality dithers more colors but may increase file size. Y'all tin can cull from the following dither options:

None

Does not dither colors simply instead uses the color closest to the missing color. This tends to event in sharp transitions between shades of color in the paradigm, creating a posterized effect.

Diffusion

Uses an error-improvidence method that produces a less-structured dither than the Design option. To protect colors in the image that contain entries in the color table from being dithered, select Preserve Verbal Colors. This is useful for preserving fine lines and text for web images.

Pattern

Uses a halftone-like square design to simulate any colors non in the color table.

Racket

Helps to reduce seam patterns along the edges of paradigm slices. Choose this option if yous plan to piece the image for placement in an HTML table.

Source: https://helpx.adobe.com/photoshop/using/converting-color-modes.html

Posted by: negronwentiont.blogspot.com

How To Change From Grayscale To Color In Photoshop

Convert an image to another color mode

Convert an image to Bitmap way

Convert a color photograph to Grayscale mode

Catechumen a Bitmap mode image to Grayscale manner

Convert a grayscale or RGB image to indexed color

Conversion options for indexed-color images

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