Waleed Tahir

2papers

2 Papers

IVMay 7, 2022
Block Modulating Video Compression: An Ultra Low Complexity Image Compression Encoder for Resource Limited Platforms

Siming Zheng, Yujia Xue, Waleed Tahir et al.

We consider the image and video compression on resource limited platforms. An ultra low-cost image encoder, named Block Modulating Video Compression (BMVC) with an encoding complexity ${\cal O}(1)$ is proposed to be implemented on mobile platforms with low consumption of power and computation resources. We also develop two types of BMVC decoders, implemented by deep neural networks. The first BMVC decoder is based on the Plug-and-Play (PnP) algorithm, which is flexible to different compression ratios. And the second decoder is a memory efficient end-to-end convolutional neural network, which aims for real-time decoding. Extensive results on the high definition images and videos demonstrate the superior performance of the proposed codec and the robustness against bit quantization.

ROAug 20, 2019
State Space System Modelling of a Quad Copter UAV

Zaid Tahir, Waleed Tahir, Saad Ali Liaqat

In this paper, a linear mathematical model for a quad copter unmanned aerial vehicle (UAV) is derived. The three degrees of freedom (3DOF) and six degrees of freedom (6DOF) quad copter state-space models are developed starting from basic Newtonian equations. These state space models are very important to control the quad copter system which is inherently dynamically unstable.