**Characteristics:**
– Represents the transparency level of each pixel in an image.
– Uses an 8-bit grayscale channel, where 0 means fully transparent and 255 means fully opaque.
– Allows for smooth blending of images with different backgrounds.
– Commonly used in image formats like PNG, TIFF, and PSD.
– Essential for compositing in graphic design, video editing, and game development.
**Examples:**
– A logo with a transparent background uses an alpha channel to blend seamlessly over any webpage or document.
– In video production, alpha channels enable layering of text or graphics over live footage without visible edges.
– Video game sprites often use alpha channels to create characters with soft edges or semi-transparent effects.
