Resampling is a digital image process, also known as interpolation, in which pixels are added or removed to change the physical size or resolution of an image. This technique allows photographers and designers to enlarge or reduce images while attempting to preserve visual quality.
Resampling is commonly used in photo editing, printing, and web optimisation. When enlarging an image, new pixels are generated based on existing ones, while reducing an image involves removing pixels to decrease file size. Understanding resampling helps photographers maintain sharpness, clarity, and detail, ensuring images look their best across different mediums and output sizes.