Reversing the colors within a digital image, also referred to as color inversion or negative image creation, produces a contrasting visual effect. For example, a photograph originally showing a bright sky and dark ground would display a dark sky and bright ground after the color reversal process is applied. This alteration can be used for artistic purposes, to reveal hidden details, or to improve visibility under certain viewing conditions.
The value of reversing image colors extends beyond mere aesthetic manipulation. Inverting colors can be beneficial for individuals with visual impairments, as it can improve image contrast and visibility. Historically, the creation of photographic negatives was an essential step in the analog photography process, demonstrating an early form of image color reversal. Digital image inversion offers a readily available tool for accessibility and creative expression.