1. A method for processing volumetric image data comprising: obtaining a plurality of 2-dimensional image maps from 3-dimensional data points; extracting at least one of the plurality of 2-dimensional image maps to form a plurality of image frames; and creating a frame gallery from the plurality of image frames including a radically different frame that is radically different from preceding and following frames based on a value of importance, wherein the value of importance includes a Gaussian weighted sum of the preceding frame and the radically different frame and the following frame and the radically different frame.