Linear image enhancement techniques

Linear image enhancement techniques are image processing methods that aim to improve the visual quality of an image by adjusting its pixel values through linear operations. These techniques operate on the principle of modifying the brightness and contrast of an image while preserving its overall structure and details. Some common linear image enhancement techniques include:

1. Contrast Stretching: Contrast stretching, also known as histogram stretching, involves expanding the dynamic range of pixel values in an image to cover ____ _________ ______ ___ _______.
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