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A standard test image is a digital image file used across different institutions to test image processing and image compression algorithms. By using the same standard test images, different labs are able to compare results, both visually and quantitatively.
The images are in many cases chosen to represent natural or typical images that a class of processing techniques would need to deal with. Other test images are chosen because they present a range of challenges to image reconstruction algorithms, such as the reproduction of fine detail and textures, sharp transitions and edges, and uniform regions...
Calculate π using the Gauss–Legendre algorithm
Write a program that takes a positive number n and performs n steps of the Gauss–Legendre algorithm, then prints out 5*2n-1-2 digits of π (including the beginning 3).
Examples:
input 1 → output 3.14
input 2 → output 3.1415926
input 4 → output 3.14...
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There was some discussion in chat and in the comments on this question about the choice of example images. Initially the images were criticised for being exclusively of women. The image of Lena Söderberg also had its origin highlighted. The question has since been edited to replace this image wit...
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