Classification of image databases using face detection

During image retrieval in image databases the indexing technique can be used on many ways. The two most frequently used methods are the text-based and the content-based indexing. In case of content-based image retrieval the image classification is significant, and after the classification process the image retrieval can be much efficient than without classification. A possible way of image classification is the decision of that, the image contains human faces or not. In this paper a survey of the recently used face detection algorithms, and a comparative analysis of that is shown. The effectiveness of face detection algorithms in image classification also is shown.