👉 JPEG engineering, or JPEG (Joint Photographic Experts Group) standards, is a set of compression techniques and algorithms designed to efficiently compress photographic images while maintaining acceptable visual quality. At its core, JPEG uses a Discrete Cosine Transform (DCT) to convert spatial image data into frequency data, allowing for the removal of high-frequency components that are less perceptible to the human eye. This process, known as quantization, reduces the amount of data needed to represent the image, achieving compression. JPEG also employs Huffman coding for further compression by encoding the quantized data in a way that minimizes redundancy. The standard supports various quality levels, enabling users to balance between file size and image fidelity. Additionally, JPEG includes features like chroma subsampling to reduce the amount of color information, and it supports progressive transmission, allowing images to be displayed in stages with increasing detail. These engineering principles make JPEG a widely adopted format for digital photography and image sharing.
