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Color correcting with memory colors is surprisingly powerful and easy. The basic idea is that you first select a memory color, and then click on objects of that color in your image. iCorrect Portrait has two built-in memory color definitions: Neutrals and Skin. You may add your own custom colors to this set and you may also adjust these built-in color definitions to better suit your personal taste (this will be described in the next section).
The three buttons at the top of the Memory Colors panel are used to switch between the two built in colors and any custom colors that you have defined:
The three buttons change appearance depending on which is active. The first button, a scale representing color balance, is used to correct Neutrals. The second button, a face, is used to correct Skin tones. The third button, a gradient, is used to correct any Custom memory colors that you have added via the Modify/Add Colors... button. The button that is currently active (most recently selected) is outlined in yellow. When the Custom button has been selected, a pop-up menu also appears, listing all of the custom colors you have defined. Use the pop-up menu to specify which of your custom colors you want to correct.
It is usually best to start with Neutrals:
After activating the Neutrals button, you simply point and click on objects in the image that you know should be neutral, that is, gray. If you stop and think about it, most images have built-in grayscales, hidden in the objects in the scene. Here are some examples of common neutral objects: paper, clothing, automobile tires, teeth, eyes (whites and pupils), clouds, white painted objects like houses or cars, black painted objects, asphalt, tree bark, snow and many others. Often, a single neutral object will have many tones, due to illumination variations. For example, the folds in a white shirt will show many different tones of the base white fabric.
Tip: If you can, click on areas that have different brightness levels of the selected memory color (e.g. dark, medium and light representative samples).
Our sample image has a neutral background, and we can assume that the center musician's hair is black and that the flowers are white. After clicking on these objects, we see that the color balance has been significantly improved.
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If you make a mistake while clicking, just use the Undo button to back up.
Next, we can correct skin tones in a similar fashion. Click on the Skin button and then click on several skin samples:
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Tip: As you click on areas in your image, you should try to mark on relatively large areas of representative color. For example, when marking skin tones it is better to mark on a smooth section of a forehead, neck or chin than on a highly made up cheekbone, a bright highlight resulting from a flash, or a small area between the eyes.
Finally, if you have defined any custom colors that need correction, click on the third memory color button:
A pop-up menu will list the custom colors that have been defined. Use it to select the color you wish to correct and then click on several samples in the image.
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