What type of image is shown in ProductSearch?

A marketing image that is already published and public, at a resolution of up to 400×400 pixels per product, is shown in ProductSearch. If the product does not have a marketing image, a planogram image displaying the front side of the product is shown. If no such planogram image is available, a priority order determines which alternate planogram images will be shown so that as many products as possible have an image. If there is no product image available at all, the product information will be displayed without any image.