Haoyang Tang

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Based on the theory of Phase Gradient autofocus on airborne SAR, an improved algorithm for reducing the Phase Gradient autofocus computation is provided in this paper. According to the image contrast criterion, some isolated stronger scatters for estimation phase errors are chosen, and then a new way to select windows width is developed, which can(More)
The newly proposed video coding standard H.264/AVC by JVT can achieve much higher efficiency than previous standards. Unfortunately this comes at a cost in greatly increased complexity at the encoder mainly due to Motion estimation (ME) and inter /intra prediction block mode decision. In this paper, we propose a fast mode decision algorithm for H.264/AVC(More)
In this paper, we propose a novel localization algorithm using LTE signaling data. Specifically, we use TA (Timing Advance) and RSRP (Reference Signal Receiving Power) data that are required in LTE standard and already available in current LTE systems. The combination of (TA, RSRP) is used as a signature, and one can expect that different locations will(More)
In this paper, we propose a scheduling algorithm for ridesharing. It efficiently serves real-time requests sent by passengers and generates ride sharing schedules that try to meet users' demands. In our method, we first propose a taxi searching algorithm using binary search strategy to quickly and efficiently retrieve candidate taxis that are likely to(More)
In this paper, we propose an improved rate-distortion (RD) optimized macroblock mode decision algorithm for temporal scalability video coding to increase reconstructed video quality under error conditions. After source-coding distortion and error propagated distortion values have been estimated and stored for each frame, a parameter used for temporal level(More)
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