Image is a crucial aspect in digital media, as it helps reduce file sizes and enables storage and transmission of images. There are mainly two types of image compression techniques: and .
Lossy methods, such as JPEG (short for Joint Photographic Experts Group), exploit human perceptual limitations to discard certain information deemed less essential to the image. By applying techniques like Discrete Transform (DCT) and , lossy compression algorithms achieve significant file size reduction while maintaining an acceptable visual quality.
On the other hand, lossless compression techniques like (Graphics Interchange Format) and (Portable Network Graphics) aim to preserve every bit of image without any degradation. They employ various algorithms such as coding and run-length to store data efficiently and reconstruct the original image accurately when .
