Procedures

Procedure	Location	Procedure Type	Description
adaptive_threshold	posterization	Function	Applie adaptive threshold
bilateral	filtering	Function	apply bilateral filter
brightness_translation	gradation_processing	Function	Apply brightness transition
canny_edge_detection	filtering	Function	apply canny edge detection the method is: 1. apply gaussian filtering 2. apply sobel filtering 3. non-maximum supperssion 4. edge tracking by hysteresis
contrast_translation	gradation_processing	Function	Apply contrast transition
display_img	pnm_tools	Subroutine	Display array img. save array as pnm image named "output.pnm" then show via imagemagick.
dither	posterization	Function	Apply dither translation
emboss	filtering	Function	apply emboss filter
error_diffusion	posterization	Function	Apply error diffusion
fill_edge	filtering	Subroutine	fill edges with the same color as closest pix.
filtering_	filtering	Function	apply filter Arguments
gamma_correction	gradation_processing	Function	Apply gamma correction
gaussian	filtering	Function	gaussian filtering (24 neighborhood)
histogram_equalization	gradation_processing	Function	Apply histgram equalization
hysteresis	filtering	Subroutine	Edge tracking by hysteresis
laplacian	filtering	Function	laplacian filtering (8 neighborhood)
linear_translation	gradation_processing	Function	Translate Linear
load_pnm	pnm_tools	Function	Load pnm file
make_histogram	gradation_processing	Function	Make magnitude histogram
make_histogram	posterization	Function	Make histogram
non_maximun_supperssion	filtering	Subroutine	Perform non-maximum_supperssin
otsu	posterization	Function	Applie binarization with ostu's method.
quantize	posterization	Function	Apply quantize
rgb_to_gray	posterization	Function	Translate rbg image to grayscale image
save_pnm	pnm_tools	Subroutine	Save array as pnm image.
sobel	filtering	Function	sobel filter (sqrt version)
to_binary	posterization	Function	Apply binarization