Chen, X., Yang, W., He, Z. and Zhong, W., 2012. Model-based comparison of 3D volumetric curvature and coherence with a co-rendering application. Journal of Seismic Exploration, 21: 000-102. Coherence and curvatures are both important attributes for the delineation of geological features of interest in seismic data. To clarify the response of these attributes to different geological features and to better integrate them into seismic interpretation, we first presented an algorithm of 3D volumetric curvature. Next, by using two modified 'French' models to simulate a variety of typical geological features, we compare the spatial relationships between geological anomalies of interest and the response of these two types of attributes; in doing so, we visually analyze the differences and similarities between these attributes. Then, by discriminately manipulating the transparency of different values in these two attributes, a combined visualization of co-rendered 3D volumetric curvature with coherence is introduced. The work presented in this paper provides a better understanding of these attributes and the spatial relationships between these attributes and geological features in real seismic data. Field data examples demonstrate that the co-rendering method can effectively communicate information, fully extract and highlight geological anomalies, and attenuate the noisy background in these attributes.