University of Bristol

Mitigating the effects of atmospheric turbulence on surveillance imagery

Various types of atmospheric distortion can influence the visual quality of video signals during acquisition. Typical distortions include fog or haze which reduce contrast, and atmospheric turbulence due to temperature variations or aerosols. An effect…

Computer Assisted Analysis of Retinal OCT Imaging

Texture-preserving image enhancement for Optical Coherence Tomography This project developed novel image enhancement algorithms for retinal optical coherence tomography (OCT). These images contain a large amount of speckle causing them to be grainy and of…

Electron Microscopy Image Segmentation

David Nam, Judith Mantell, David Bull, Paul Verkade, Alin Achim The following work presents a graphical user interface (GUI), for automatic segmentation of granule cores and membranes, in transmission electron microscopy images of beta cells….

Undecimated 2D Dual Tree Complex Wavelet Transforms

This work introduces two undecimated forms of the 2D Dual Tree Complex Wavelet Transform (DT-CWT) which combine the benefits of the Undecimated Discrete Wavelet Transform (exact translational invariance, a one-to-one relationship between all co-located coefficients at all scales) and the DT-CWT (improved directional selectivity and complex subbands).

Hardware-accelerated Video Fusion

This projects aim at producing a low-power demonstrator for real-time video fusion using a hybrid SoC device that combines a low-power Cortex A9 multi-core processor and a FPGA fabric. The methodology involves using a fusion…

Video super-resolution

Motion compensated video super-resolution is a technique that uses the sub-pixel shifts between multiple low resolution images of the same scene to create higher resolution frames with improved quality. An important concept is that due…