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/****************************************************************************/
/* */
/* IMG* Image Processing Tools Library */
/* Program: imgAbs.c */
/* Author: Simon A.J. Winder */
/* Date: Thu Oct 20 20:45:29 1994 */
/* Copyright (C) 1994 Simon A.J. Winder */
/* */
/****************************************************************************/
#include "tools.h"
#define PRGNAME "Abs"
#define ERROR(e) imgError(e,PRGNAME)
int main(int argc,char **argv)
{
it_image *in1,*out1;
int width,height,x,y;
it_float *in1_ptr,*out_ptr;
double val,min,max;
IFHELP
{
fprintf(stderr,"img%s - Calculate pixel absolute values\n",
PRGNAME);
fprintf(stderr," stdin: Float\n");
fprintf(stderr," stdout: Float\n");
exit(0);
}
imgStart(PRGNAME);
/* Loop for all images */
do {
in1=i_read_image_file(stdin,IT_FLOAT,IM_FRAGMENT);
if(in1==NULL)
ERROR("can't import image file");
width=in1->width;
height=in1->height;
out1=i_create_image(width,height,IT_FLOAT,IM_FRAGMENT);
if(out1==NULL)
ERROR("out of memory");
imgInitMinMax(min,max);
for(y=0;y<height;y++)
{
in1_ptr=im_float_row(in1,y);
out_ptr=im_float_row(out1,y);
for(x=0;x<width;x++)
{
val= *in1_ptr++;
if(val<0.0)
val= -val;
*out_ptr++ =val;
if(val>max) max=val;
if(val<min) min=val;
}
}
out1->min_value=min;
out1->max_value=max;
out1->valid_x=in1->valid_x;
out1->valid_y=in1->valid_y;
out1->valid_width=in1->valid_width;
out1->valid_height=in1->valid_height;
i_destroy_image(in1);
i_write_image_file(stdout,out1,IF_BINARY);
i_destroy_image(out1);
} while(!feof(stdin));
imgFinish(PRGNAME);
return(0);
}
/* Version 1.0 (Oct 1994) */
/* Version 1.1 (Nov 1994) */
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