The image.CornerDetectionF9 R package detects corners in images, namely:
Read in an image with values in the 0-255 range (pgm image: http://netpbm.sourceforge.net/doc/pgm.html)
library(pixmap)
library(image.CornerDetectionF9)
imagelocation <- system.file("extdata", "chairs.pgm", package = "image.CornerDetectionF9")
image <- read.pnm(file = imagelocation, cellres = 1)
x <- image@grey * 255
corners <- image_detect_corners(x, 100)
plot(image)
points(corners$x, corners$y, col = "red", pch = 20, lwd = 0.5)
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