Raster Images

Raster images are also known as bitmap images. They consist of a matrix or grid of pixels. Each pixel is the smallest unit of an image, arranged in rows and columns, with a specific position and color value.

Raster images are often used in graphic design to capture detailed graphics and high-quality photographs. These images are most commonly available in four formats: JPEG, PNG, GIF, and TIFF.

Difference Between Raster and Vector Images

Raster images use a grid of pixels to represent visuals, making them ideal for detailed and complex images but resolution-dependent. Vector graphics use mathematical paths to define shapes, allowing for infinite scalability without loss of quality.

Raster is best for photos and details, while vector is best for logos and illustrations that need resizing. Understanding both types’ structures, applications, and limitations helps designers choose between them.

Applications of Raster Images

Here are some of the most common applications of raster images in design.

• Scanning and Photography: These images reflect the details and colours of the subject and hence are most often used when scanning or photographing objects.
• Photographs and Complex Images: Raster images excel at capturing detailed visuals, making them ideal for images with complex textures.
• Resolution Dependence: Increasing the size of raster images beyond their original resolution may lead to pixelation and reduced clarity.
• Editing Constraints: Editing such images can be challenging and may affect image quality due to their fixed pixel nature.

Note: All information and/or data from external sources is believed to be accurate as of the date of publication.