#include <stdlib.h> #include <stdio.h> #include "basicImage.c" void pickBright( image img, image smooth ) { int r, c, sum, max; unsigned char value ; /* Copy edge pixels from input image to output image */ for ( r=0; r<img.nrows; r++ ) { value = getPixel( img, r, 0 ) ; setPixel( smooth, r, 0, value ); value = getPixel( img, r, img.ncols-1 ) ; setPixel( smooth, r, img.ncols-1 , value ); } for ( c=0; c<img.ncols; c++ ) { value = getPixel( img, 0, c ) ; setPixel( smooth, 0, c, value ); value = getPixel( img, img.nrows-1, c ) ; setPixel( smooth, img.nrows-1, c, value ); } /* Find the brightest pixel in each 3x3 neighborhood */ for ( r=1; r<img.nrows-1; r++ ) for ( c=1; c<img.ncols-1; c++ ) { max = getPixel( img, r-1, c-1 ); max = (value=getPixel( img, r-1, c )) > max ? value : max; max = (value=getPixel( img, r-1, c+1 )) > max ? value : max; max = (value=getPixel( img, r , c-1 )) > max ? value : max; max = (value=getPixel( img, r , c )) > max ? value : max; max = (value=getPixel( img, r , c+1 )) > max ? value : max; max = (value=getPixel( img, r+1, c-1 )) > max ? value : max; max = (value=getPixel( img, r+1, c )) > max ? value : max; max = (value=getPixel( img, r+1, c+1 )) > max ? value : max; setPixel( smooth, r, c, max ); } } int main ( int argc, char* argv[] ) { image img, smimg; if ( argc != 3 ) { printf( "smooth oldImage smoothImage\n" ); system( "pause" ); exit( EXIT_FAILURE ); } /* read in the image */ readPGMimage( &img, argv[1] ); /* create a blank image */ newImage( &smimg, img.nrows, img.ncols ); /* fill in values for the new image */ pickBright( img, smimg ); /* write the image to disk and free memory */ writePGMimage( smimg, argv[2] ); freeImage( &img ); freeImage( &smimg ); }
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