File list (Check if you may need any files):
inverseHalftoning
.................\Makefile
.................\matrix_utils.h
.................\inverse_halftone.h
.................\README.txt
.................\bin.nt4
.................\.......\fastiht1.ilk
.................\.......\fastiht1.exe
.................\.......\fastiht2.ilk
.................\.......\fastiht2.exe
.................\matrix_utils.c
.................\config-gcc.mk
.................\config-cc.mk
.................\bin.sol2.5
.................\..........\fastiht1
.................\..........\fastiht2
.................\image_io.h
.................\fastiht1.c
.................\image_io.c
.................\inverse_halftone.c
.................\fastiht2.c
.................\lena_halftone_512x512
.................\vc++_fastiht1
.................\.............\fastiht1.dsw
.................\.............\fastiht1.ncb
.................\.............\fastiht1.plg
.................\.............\debug
.................\.............\.....\vc50.idb
.................\.............\.....\vc50.pdb
.................\.............\.....\fastiht1.obj
.................\.............\.....\image_io.obj
.................\.............\.....\readWritePPM.obj
.................\.............\.....\fastiht1.pch
.................\.............\.....\fastiht1.pdb
.................\.............\.....\inverse_halftone.obj
.................\.............\.....\matrix_utils.obj
.................\.............\fastiht1.dsp
.................\.............\fastiht1.opt
.................\lena_1_invhalf_512x512
.................\lena.pgm
.................\lena_2_invhalf_512x512
.................\lena_halftone.pgm
.................\vc++_fastiht2
.................\.............\fastiht2.dsw
.................\.............\fastiht2.ncb
.................\.............\fastiht2.plg
.................\.............\debug
.................\.............\.....\vc50.idb
.................\.............\.....\vc50.pdb
.................\.............\.....\fastiht2.obj
.................\.............\.....\fastiht2.pch
.................\.............\.....\fastiht2.pdb
.................\.............\.....\readWritePPM.obj
.................\.............\fastiht2.dsp
.................\.............\fastiht2.opt
.................\lena_1_invhalf.pgm
.................\lena_512x512
.................\readWritePPM.h
.................\readWritePPM.c
.................\readWriteImage.h
.................\lena_2_invhalf.pgm