Lenna JPEG File

A Lenna JPEG File is a JPEG image file that encoded the famous test image or Lena Forsén, originally sourced from a 1972 issue of Playboy magazine.

• Context:
  • It can (typically) serve as a standard test image in the field of image processing and computer vision.
  • It can (often) be used for evaluating image compression algorithms, image enhancement techniques, and pattern recognition methods, illustrating the effects of lossy compression on image quality.
  • It can originate from a cropped photograph of Lenna Söderberg, taken from a 1972 issue of Playboy magazine
  • It has become one of the most used standard test images in these fields.
  • It can illustrate the effects of lossy compression on image quality, showcasing how the JPEG compression algorithm can affect details and color fidelity.
  • It can be recognized for its good mix of detail, flat regions, textures, and colors, making it suitable for testing various image processing algorithms.
  • It can be questioned on Ethical Grounds, e.g. major publications and institutions like Nature Nanotechnology and the Institute of Electrical and Electronics Engineers (IEEE) have discouraged or outright banned its use.
  • ...
• Example(s):
  • The standard 512x512 pixel version of the Lenna image, compressed as a JPEG file.
  • ...
• Counter-Example(s):
  • one from a Kodak Lossless True Color Image Suite.
• See: Digital Image Processing, JPEG Standard, Image Compression Techniques, Test Images in Image Processing, Image Quality Assessment, Playboy, Standard Test Image, Digital Image Processing, Sweden, Centerfold.

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References

2024

• (Wikipedia, 2024) ⇒ https://en.wikipedia.org/wiki/Lenna Retrieved:2024-4-7.
  • Lenna (or Lena) is a standard test image used in the field of digital image processing starting in 1973, but it is no longer considered appropriate by some authors. It is a picture of the Swedish model Lena Forsén, shot by photographer Dwight Hooker, cropped from the centerfold of the November 1972 issue of Playboy magazine. The continued use of the image has attracted controversy, on both technical and social grounds, and many journals have discouraged or banned its use. Forsén herself has said "It's time I retired from tech." The spelling "Lenna" came from the model's desire to encourage the proper pronunciation of her name. "I didn't want to be called Leena []," she explained.
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