I have added a custom link to the image crud view where you upload/rearrange/add title to pictures..all it does is add a link to the direct URL of the image..
It is located in the list.php file under \assets\image_crud\views
<ul class='photos-crud'>
<?php foreach($photos as $photo_num => $photo){?>
<li id="photos_<?php echo $photo->$primary_key; ?>">
<div class='photo-box'>
<a href='<?php echo $photo->image_url?>' <?php if (isset($photo->title)) {echo 'title="'.str_replace('"',""",$photo->title).'" ';}?>target='_blank' class="color-box" rel="color-box" tabindex="-1"><img src='<?php echo $photo->thumbnail_url?>' width='90' height='60' class='basic-image' /></a>
<?php if($title_field !== null){ ?>
<textarea class="ic-title-field" data-id="<?php echo $photo->$primary_key; ?>" autocomplete="off" ><?php echo $photo->$title_field; ?></textarea>
<div class="clear"></div><?php }?>
<?php if($has_priority_field){?><div class="move-box"></div><?php }?>
<?php if(!$unset_delete){?><div class='delete-box'>
<a href='<?php echo $photo->delete_url?>' class='delete-anchor' tabindex="-1"><?php echo $this->l('list_delete');?></a>
</div><?php }?>
<!-- This part I added -->
<div class="clear"></div>
<div>
<a href="<?php echo $photo->image_url; ?>"> URL </a>
</div>
<!-- end of part I added -->
<div class="clear"></div>
</div>
</li>
<?php }?>
</ul>
The part I added to have a direct link to the image and its direct URL..you could also use $photo->image_url to put in a textbox so they can easilly copy it to be pasted in your textarea