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Lenna (or Lena) is a standard test image used in the field of digital image processing, starting in 1973. [1] It is a picture of the Swedish model Lena Forsén , shot by photographer Dwight Hooker and cropped from the centerfold of the November 1972 issue of Playboy magazine.
The Lenna image is a standard test image used in image processing. Lenna may also refer to: People ... Lena Forsén (born 1951), Swedish model, ...
Retrieved from "https://en.wikipedia.org/w/index.php?title=Lena_(test_image)&oldid=816921138"This page was last edited on 24 December 2017, at 18:02 (UTC). (UTC).
Visual representation of an image pyramid with 5 levels. Pyramid, or pyramid representation, is a type of multi-scale signal representation developed by the computer vision, image processing and signal processing communities, in which a signal or an image is subject to repeated smoothing and subsampling.
Embedded zerotree wavelet algorithm (EZW) as developed by J. Shapiro in 1993, enables scalable image transmission and decoding. It is based on four key concepts: first, it should be a discrete wavelet transform or hierarchical subband decomposition; second, it should predict the absence of significant information when exploring the self-similarity inherent in images; third, it has entropy ...
Lena Dunham posted a naked photo on Instagram as a message to body shamers. The "Girls" star shared the picture late on Thursday night that shows her entire, nude body from her thighs to her ...
The result of the Sobel–Feldman operator is a 2-dimensional map of the gradient at each point. It can be processed and viewed as though it is itself an image, with the areas of high gradient (the likely edges) visible as white lines. The following images illustrate this, by showing the computation of the Sobel–Feldman operator on a simple ...
Lena Dunham is embracing her bikini body just in time for summer. The Girls star took to Instagram on Friday to share a photo of her posing poolside in a brown bikini. View this post on Instagram