Képpontérték

Képpontérték is a Hungarian term that translates to "pixel value" or "pixel intensity" in English. It refers to the numerical representation of the color or brightness of an individual pixel within a digital image. In the context of digital imaging, an image is composed of a grid of pixels, and each pixel holds a specific value that determines its appearance.

The way a képpontérték is represented depends on the color model used. For grayscale images, a single value typically indicates the intensity of light, ranging from black (often 0) to white (often 255 in an 8-bit system). For color images, multiple values are used to define the color. Common color models include RGB (Red, Green, Blue), where each primary color has its own value, and HSV (Hue, Saturation, Value), which describes color in a more intuitive way.

The depth of the képpontérték, often referred to as bit depth, determines the number of possible values each channel can hold. A higher bit depth allows for a wider range of colors and finer gradations of intensity, resulting in more nuanced and realistic images. For example, an 8-bit depth per channel (24-bit color) allows for 256 levels for red, green, and blue, creating millions of possible colors. The interpretation and manipulation of képpontérték are fundamental to image processing, analysis, and display technologies.