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Lena is probably one of the most well-known example in image processing and computer vision.
data(lena128)
matrix of size \((128\times 128)\)
Gonzalez, Rafael C. and Woods, Richard E. (2017) Digital Image Processing (4th ed.). ISBN 0133356728.
# NOT RUN { data(lena128) image(lena128, col=gray((0:100)/100), axes=FALSE, main="lena128") # }
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