Some programs: <br>
<br>
        <a href="diffpic.c">
        diffpic.c </a><br>
<br>
        <a href="diffpic3.c">
        diffpic3.c </a><br>
<br>
        <a href="rawtopgm.c">
        rawtopgm.c </a><br>
<br>
        <a href="pgmtoraw.c">
        pgmtoraw.c </a><br>
<br>
        <a href="sobel.c">
        sobel.c</a><br>
<br>
        <a href="marrh.c">
        marrh.c</a><br>

<br><br>



<br>


<br>
<br>

</blockquote>
<hr>