I must admit I tried your answer DarrylGodden and didn't get much luck with it. However I did find using the
that I was able to put my own class in. In the example below I show you how to do this. I have also included other lines of code required to get the values to pass into getPictureMarkup.
//Get the client Control ID and add _CannonFodder_ to it.
var encodedId = $htmlEncode(ctx.ClientControl.get_nextUniqueId() + "_CannonFodder_");
//Create an Picture ID
var pictureId = encodedId + "picture";
//Get the title (in your example this might be line1
var title = $getItemValue(ctx, "Title");
var pictureMarkup = Srch.ContentBySearch.getPictureMarkup(pictureURL, 150, 250, ctx.CurrentItem, "myclassiwanttogive", title, pictureId);
The variable pictureMarkup will have the following value in it.
<img src="/SITES/demo/PUBLISHINGIMAGES/ITALY.JPG?width=150&height=250" class="myclassiwanttogive" alt="My Title" id="ctl00_ctl37_g_b464e1ff_1d40_42bd_89ae_55fea3e05ed6_csr1_CannonFodder_picture" onerror="this.parentNode.innerHTML=Srch.ContentBySearch.getNoPictureMarkup(250);" />
As you can see my class name "myclassiwanttogive" is within the img script. It also ensures that every picture is the same height and width of 150x250. If you put nulls in where I've put 150, and 250 it will put the pictures original size. Alternatively with string manipulation you could put an image rendition in after ITALY.JPG? instead of using width and height. Lastly the title has been put in as the picture alt.