Edit in JSFiddle


              
            
          
            
              
                
<div class="box">
    <img src="http://dummyimage.com/200x150/08c/fff&text=line-height:0">
</div>
.box{
    width:200px;
    border: solid 1px #f00;
    line-height:0;
}

img{
    width:200px;
}