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1. This lesson will show you how to use the [Auto Tone], [Auto Contrast] and [Auto Color] commands. First click the [Image > Auto Tone] command in turn.
2. The [Auto Hue] command adjusts each color channel. The brightest and darkest pixels in each color channel are adjusted to white and black, and the pixel values in the middle are redistributed proportionally.
3. Click [Edit > Backward] to undo the operation of the previous step.
4.
5. Then click the [Image > Auto Contrast] command in sequence.
6. The [Auto Contrast] command can automatically adjust the contrast of the colors in the image. This command maps the lightest and darkest pixels in the image to white and black, respectively, making highlights appear brighter and shadows appear darker.
7. Click [Edit > Backward] to undo the operation of the previous step.
8.
9. Then click the [Image > Auto Color] command in sequence.
10. The [Auto Color] command can adjust the hue and saturation of the image by searching for the actual pixels to make the color of the image more vivid.
11. Observe the effect of the image after applying Auto Color, then use the keyboard shortcuts to save the final result and end the lesson.
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