%>%	pipe
compare_table	compare_table
count_val_freq	count_val_freq
get_os	get_os
hay2needle	hay2needle
image2gray_matrix	image2gray_matrix
index2xy	index2xy
install_screenshot	install_screenshot
is_all_same	is_all_same
locate_image	locate_image
locate_ndl_in_hay	locate_ndl_in_hay
screenshot	screenshot
screenshot_exists	screenshot_exists
xy_pos	xy_pos
