Lena

Lena is a standard digital image widely used in the field of image processing for testing and benchmarking algorithms. It features a picture of Lena Söderberg, a Swedish model, with a distinctive face and plaid shirt. The image's consistent use helps researchers compare the effectiveness of various image compression, enhancement, and recognition techniques. By providing a common reference point, Lena enables clearer evaluation of how different algorithms perform in preserving details, reducing size, or improving quality in digital images.