1 code implementation • arXiv 2020 • Han Gong, Luwen Yu, Stephen Westland
We present a simple primary colour editing method for consumer product images.
no code implementations • 14 Jan 2020 • Han Gong
We present Convolutional Mean (CM) - a simple and fast convolutional neural network for illuminant estimation.
no code implementations • 27 Jul 2017 • Han Gong, Graham D. Finlayson, Maryam M. Darrodi
Compared with raw images, the more common JPEG images are less useful for machine vision algorithms and professional photographers because JPEG-sRGB does not preserve a linear relation between pixel values and the light measured from the scene.
no code implementations • 4 Aug 2016 • Han Gong, Graham D. Finlayson, Robert B. Fisher
A powerful form of shading adjustment is shown to be a global shading curve by which the same shading homography can be applied elsewhere.
1 code implementation • 2 Aug 2016 • Han Gong, Darren P. Cosker
A user-centric method for fast, interactive, robust and high-quality shadow removal is presented.
no code implementations • 20 Jul 2016 • Han Gong, Graham Finlayson
We present a user-friendly interactive system for robust illumination-invariant image generation.
no code implementations • 20 Jul 2016 • Graham D. Finlayson, Han Gong, Robert B. Fisher
Homographies -- a mathematical formalism for relating image points across different camera viewpoints -- are at the foundations of geometric methods in computer vision and are used in geometric camera calibration, image registration, and stereo vision and other tasks.
no code implementations • 13 May 2016 • Graham D. Finlayson, Han Gong, Robert B. Fisher
We show the surprising result that colors across a change in viewing condition (changing light color, shading and camera) are related by a homography.