|
|
Every pixel in an 8-bit gray-value image can take on one of 256 gray values. TEM cameras acquire gray-value images with a bit depth higher than 8 bits. However, with your software you can load and edit 8-bit gray-value images that were acquired with a different system. How do I recognize a 8-bit gray-value image? See also How do I recognize a 8-bit gray-value image?1.You can immediately recognize a gray-value image because it has this icon 2.You can see what type an image is by looking at the Image > Type entry in the Properties tool window. For 8-bit images, the 8 bit Grayscale entry is displayed. 3.Alternatively, the Image > Mode command will also show you the image type. When it is a 8-bit gray-value image the Grayscale and 8 Bit / Channel menu entries will be marked. Converting a gray-value imageYou can convert every image type that is supported into every other type. You can e.g., convert a gray-value image into a 24-bit true-color image. To do so, use the Image > Mode > RGB Color command. However, making this sort of conversion only makes sense when you need a 24-bit true-color image for a particular reason. After the conversion the resulting image looks exactly the same as the source image, but the file will have become considerably larger. Applying color tablesYou can use pseudo color tables to have gray-value images displayed in color. Then every intensity value in an image will be allotted a hue. Use the Image > Pseudo Color... command, to allocate a color table to a gray-value image. 00006 |
