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Robust solutions to vision-based human action recognition require effective representations of body shapes and their dynamics. Combining multiple cues in the input space can improve the recognition task. Although conventional method such as concatenation of feature vectors is straightforward, it may not sufficiently encapsulate the characteristics of an action. Inspired by the success of convolution-based reverb application in digital signal processing, we propose a novel method to synergistically combine shape and motion histograms via convolution operation. The objective is to synthesize the output (action representation) which carries the characteristics of both source inputs (shape and motion). Analysis and experimental results on the Weizmann and KTH datasets show that the resultant feature is more efficient than other hybrid features. Compared to other recent works, the feature that we used has …