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Piezoelectric microgenerator is an incredible method which makes a self‐powered wireless sensor node. It is a process of converting ambient energy into electrical energy. Flexible microgenerator goes well with many natural curved, rough and arbitrary surfaces such as human bodies, organisms, clothes and structure surfaces. Zinc oxide and polymer have been used as piezoelectric material and substrate, respectively, for biocompatible device. The harmonic analysis was carried out using finite element method (FEM) tool to examine the effect of the electrodes on the output voltage. Microgenerators with different electrodes were fabricated and examined their performance. Traditional parallel plate metal electrodes (PPEs) are prone to cracks and internal defects on bending or stretching, thus mesh electrodes (MEs) has been proposed. Copper MEs based microgenerator has performed at par. Open‐circuit electric potential of 2.8 VPEAK, 435 mVRMS for ME against electric potential of 2.3 VPEAK, 430 mVRMS and 0.9 V, 340 VPEAK, 40 mVRMS for interdigitated electrodes (IDEs) and PPE, respectively, were recorded. Design, fabrication, electrical characterisation and comparative evaluation of microgenerator with three different electrodes are presented. [ABSTRACT FROM AUTHOR]

High‐efficiency video coding (HEVC) outperforms H.264/AVC by providing a bitrate reduction of about 50% while having almost the same perceptual quality. It adopts more flexible partitioning in motion estimation (ME) which gains higher coding efficiency at a cost of increased coding complexity. Depth maps in the emerging multi‐view plus depth videos are exploited to adjust the search range in ME for HEVC complexity reduction. With the aid of depth intensity variations among neighbouring blocks, the proposed algorithm derives weights to the neighbouring blocks and establishes an adaptive search range according to the weighted sum of the motion vectors from the neighbouring blocks. Compared with the fast test zone (TZS) search in HEVC, the proposed algorithm saves 65% coding time in ME on average with insignificant rate‐distortion degradation. [ABSTRACT FROM AUTHOR]

A new bilateral frame rate upconversion algorithm using the image texture complexity characteristic is proposed. In the proposed algorithm, as the cost function is adjusted according to the image texture complexity, the accuracy of motion estimation (ME) is improved. In the experimental results, the proposed algorithm outperforms the conventional bilateral ME process by 0.32 dB. [ABSTRACT FROM AUTHOR]

A novel two‐layer motion estimation which searches motion vectors on two layers with partial distortion measures in order to reduce the overwhelming computational complexity of motion estimation (ME) in video coding is proposed. A layer is an image which is derived from the reference frame such that the summation of a block of pixels in the reference frame determines the point of a layer. It has been noted on different video sequences that many motion vectors on the layers are the same as those searched on the reference frame. Experimental results on a wide variety of video sequences show that the proposed algorithm achieves both fast speed and good motion prediction quality when compared with the state‐of‐the‐art fast block matching algorithms. [ABSTRACT FROM AUTHOR]