24-bit true-color image

TEM cameras don't acquire true color images. However, with your software you can load and edit true color images that were acquired with a different system. Every pixel in a 24-bit true-color image can take on one of 16,777,216 colors.

Which color spaces are there?

There are numerous mathematical models that can be used to describe a color as a numerical value. Popular color spaces are, for example, RGB and HSV.

Color channels in a true-color image

RGB stands for Red, Green and Blue. A true-color image can be described as the superimposition of three 8-bit images of the red, green and blue color channels. You can look at the three color channels separately, or break the image down into its color channels.

How do I recognize a true-color image?

1.You can immediately recognize a true color image because it has this icon in front of the image name. You will find this icon in the image document's title and in the Documents tool window. The icon doesn't tell you which bit depth the image has.

2.You can see what type an image is by looking at the Image > Type entry in the Properties tool window. The 24 bit RGB Color entry is displayed for a 24-bit true color image.

3.Alternatively, the Image > Mode command will also show you the image type. When it is a 24-bit true-color image the RGB Color and 8 Bit / Channel menu entries will be marked.

Converting a true-color image

You can convert every image type that is supported into every other type.

You can convert a true-color image, for example, into a gray-value image. To do so, use the Image > Mode > Grayscale command.

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