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Light-weight video coding (LVC) follows distributed video coding (DVC) and designs to move computational complexity from the encoder to the decoder, thus making a low computational complexity encoder. In traditional video coding, the high computational complexity encoder algorithms, where motion estimation and mode decision, are the main transferred objects. In order to alleviate the computational burden, the proposed architecture adopts the Partial Boundary Matching Algorithm (PBMA) and four flexible types of mode decision at the decoder; this circumvents the traditional use of motion estimation and mode decision at the encoder. In simulation, the proposed architecture, Padding Block-based LVC, not only outperforms the state-of-the-art DVC (DISCOVER) codec by up to 4~5 dB but also significantly decreases decoder complexity to approximately one hundred times lower than that of the DISCOVER codec.

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