Digitaalikuva

Digitaalikuva, meaning digital image in Finnish, refers to any image that is represented as a set of digital data. This data is typically stored in a raster format, where the image is composed of a grid of pixels. Each pixel has a specific color and intensity value, and together they form the complete image.

Digital images are created through various means, including digital cameras, scanners, and computer software. They are fundamentally different from analog images, such as photographs printed on film, which store information in a continuous medium. The digital nature of these images allows for easy storage, manipulation, and transmission.

Common file formats for digital images include JPEG, PNG, GIF, and TIFF. Each format has its own advantages and disadvantages regarding compression, color depth, and transparency support. JPEG is widely used for photographs due to its efficient compression, while PNG is preferred for graphics and images requiring transparency.

The manipulation of digital images is a core aspect of digital imaging. Software applications like Adobe Photoshop or GIMP allow users to edit images by adjusting colors, brightness, contrast, and sharpness, as well as performing more complex operations like retouching, compositing, and applying filters.

Digital images are ubiquitous in modern life, playing a crucial role in fields such as photography, graphic design, medical imaging, and scientific research. Their versatility and ease of use have made them an indispensable tool for capturing and sharing visual information.