Lenna(Version1) is the original image, in black and white, with a white background. It is a cropped and a bit modified version of Lena. It was originally used in the original project to write the first image processing software for the Raspberry Pi.
The test image is supplied by A. Rubinstein as Lenna(100), a 100x100 pixel grayscale version of the original Lena. Both the Lenna and the Lenna(100) images are provided by the author in the LennaImages.zip file.
Lena is also used in the display of the Raspberry Pi, a low-cost, credit-card-sized computer, to demonstrate the power of computer graphics. The original pin-up image used to be a variation of Lenna, but the one linked below is a different Lena version.
Lenna(100) is a bit different from the original Lena. It has a different number of pixels and all the pixels are represented by the full 8-bit range (0 to 255). All the pixels are identical and all are white (255, 255, 255, 255, 255, 255, 255, 255). The image is very symmetrical and has a big black strip on its left side.
The first psychophysical study using the Lena image as input for a visual system was in September 1972 by John K. L. Tsui, J. K. B. Tsui, and W. S. Lee, who showed that the human visual system perceived an image of Lenna as being rougher and less uniform than the original full-sized image, even when the scaling was done so as to preserve the original “flatness” of the image. In 1973, Hugh A. Slaney, the founder of the Image Processing Laboratory at the University of Washington, used the Lena image to illustrate the properties of a digitized image.
Some applications, such as Java, require that the application directories and libraries are updated to a newer version before the user can update. However, there are some applications that are not explicitly API-specific, such as the X Window System, the X server source code, are automatically updated as required.
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