Chanuka Wijayakoon

student

Research Engineer in Computer Vision & Deep Learning. Interested in Image & Video Colorization, visualizations of neural models, and their security. My current research focuses on using Genetic Algorithms to generate visualizations of images at the decision boundary of CNN classifiers, and techniques to improve their robustness.

I’m working on the project which is FlowChroma – A Deep Recurrent Network for Video Colorization.

Brief Description of Project

We developed an automated video colorization framework that minimizes the flickering of colors across frames. If we apply image colorization techniques to successive frames of a video, they treat each frame as a separate colorization task. Thus, they do not necessarily maintain the colors of a scene consistently across subsequent frames.

The proposed solution includes a novel deep recurrent encoder-decoder architecture that is capable of maintaining temporal and contextual coherence between consecutive frames of a video. We use a high-level semantic feature extractor to automatically identify the context of a scenario, with a custom fusion layer that combines the spatial and temporal features of a frame sequence.

Additionally, we developed a dataset for video colorization, along with a benchmark.