How to call categories of custom post types?

I have the code below in the admin area of my template.

I would like to add to the list of categories (which the user can select in the code below) any/all “categories” for custom post types.

Is there a way to do that? If so, how?

<div style="margin: 13px 0 11px 4px; display: none;" class="et_pt_gallery et_pt_portfolio">
<h4><?php esc_html_e( 'Select gallery categories:', $themename ); ?></h4>

<?php $cats_array = get_categories('hide_empty=0');
$site_cats = array();
foreach ($cats_array as $categs) {
$checked = '';

if (!empty($et_ptemplate_gallerycats)) {
if (in_array($categs->cat_ID, $et_ptemplate_gallerycats)) $checked = "checked=\"checked\"";
} ?>

<label style="padding-bottom: 5px; display: block;" for="<?php echo 'et_ptemplate_gallerycats-',$categs->cat_ID; ?>">
<input type="checkbox" name="et_ptemplate_gallerycats[]" id="<?php echo esc_attr( 'et_ptemplate_gallerycats-' . $categs->cat_ID ); ?>" value="<?php echo esc_attr( $categs->cat_ID ); ?>" <?php echo $checked; ?> />
<?php echo esc_html( $categs->cat_name ); ?>
</label>
<?php } ?>
</div>