Ohm, J.-R.J.-R.OhmBunjamin, F.F.BunjaminLiebsch, W.W.LiebschMakai, B.B.MakaiMüller, K.K.MüllerSmolic, A.A.SmolicZier, D.D.Zier2022-03-032022-03-032000https://publica.fraunhofer.de/handle/publica/19876510.1016/S0923-5965(00)00023-02-s2.0-0034274782This paper reports about descriptors for basic visual information features, which have been developed in the context of the forthcoming MPEG-7 standard. The four basic features supported are color, texture, shape and motion. A search engine system has been developed which supports combinations of basic feature descriptors in a low-level description scheme for similarity-based retrieval of visual (image and video) data. All basic descriptors have been developed so that invariance against common transformations of visual material, e.g. filtering, contrast/color manipulation, resizing, etc., is achieved, and that they are fitted to human perception properties. Furthermore, descriptors have been designed to allow fast, coarse-to-fine search procedures. Elements described in this contribution have been proposed for the MPEG-7 standard. They are currently either included in the MPEG-7 Experimentation Model (XM) or investigated within core experiments, which are performed duri ng the standard's development.en621004journal article