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In this R Tutorial, We’ll learn how to perform a very popular Computer Vision task which is Object Detection in R with YOLO (pre-trained Models). For this we’re going to use the image.darknet package from https://github.com/bnosac. The good thing about this package is that it doesn’t require neither reticulate nor Python. It’s ported from the native C code and hence the performance is good.

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### Code

#devtools::install_github("bnosac/image", subdir = "image.darknet", build_vignettes = TRUE)

library(image.darknet)

#If required, Set new working directory where the final predictions imaged with bounding box will be saved

#setwd(paste0(getwd(),"/projects/"))

#Define Model - here it is Tiny Yolo
yolo_tiny_voc <- image_darknet_model(type = 'detect',
model = "tiny-yolo-voc.cfg",
weights = system.file(package="image.darknet", "models", "tiny-yolo-voc.weights"),
labels = system.file(package="image.darknet", "include", "darknet", "data", "voc.names"))

#Image Detection
object = yolo_tiny_voc,
threshold = 0.19)