Captivate lets you insert various types of images on any slide. Once an image is inserted, you can modify and format it using the image-editing tools of Captivate.
Keep in mind, though, that Captivate is not an image-editing application. To guarantee the best possible results, you should always prepare your images in a dedicated image-editing application, such as Adobe Photoshop or Adobe Illustrator, before inserting the image into Captivate. However, if you don't have access to these programs, you can do basic image editing inside Captivate.