How to load Category image in top menu?

I have loaded the category and sub-category, now I need to load image as well but I’m not sure how to do that.

Below is the code I have used:

In block file:

public function getStoreCategories($sorted = false, $asCollection = false, $toLoad = true)
    {
        return $this->_categoryHelper->getStoreCategories($sorted , $asCollection, $toLoad);
    }

    public function getCategoryById($categoryId) 
    {
        return $this->_categoryRepository->get($categoryId);

    }

In phtm file:

        

              Login
            

              Sign Up
            
< ?php
          $categories = $block->getStoreCategories();
          foreach ($categories as $category):

          ?>
          
< ?php echo $category->getName(); ?>
          

            < ?php
            $subCategories = $block->getCategoryById($category->getId());
            foreach ($subCategories->getChildrenCategories() as $subCategory):
            ?>

            
< ?php echo $subCategory->getName(); ?>
          

          < ?php endforeach; ?>
        
        < ?php echo $block->getSubcategories($subCategories); ?>
        < ?php endforeach; ?>
      
  

Can you please help me with this?