These changes will allow the SharePoint 2010 Search Results to display the thumbnail for Images stored in an Asset Library. While the thumbnails exist in SharePoint, for some reason they are not automatically displayed or easy to get to.
You can make these changes in the Search Service Application under Federated Locations/Display Information, or by modifying the Core Search Results web part in the search results.
Step 1 In the Search Service Application under Metadata Properties set up the following new managed properties, then run a full crawl
For Content Type (for some reason you cannot access the default ContentType managed Property) set up one that uses the same mappings ContentTypeforSearch Mappings= Basic:5(Text), ows_ContentType(Text)
To get the Image File Information you’ll need the URL. Despite this being mapped to something called “Thumbnail On Form” it is not the Thumbnail URL, but instead the main Image URL. ImageFileURL Mappings= ows_ThumbnailOnForm(Text)