<canvas id ="cvs19" width ="200" height = "150">
      votre navigateur n'accepte pas Canvas
</canvas>
<script>
   var canv1 = document.getElementById('cvs19');
     var context1 = canv1.getContext('2d');
     var image1 = new Image();
   image1.src = 'img/lyon.jpg'; //adresse de l'image
   image1.onload = function () {
                           context1.drawImage(this,57, 87,70,70, 0,0,cvs19.width, cvs19.height);
                            }
   </script>