Search Results for author: Han Gong

Found 8 papers, 2 papers with code

Simple Primary Colour Editing for Consumer Product Images

1 code implementation arXiv 2020 Han Gong, Luwen Yu, Stephen Westland

We present a simple primary colour editing method for consumer product images.

Convolutional Mean: A Simple Convolutional Neural Network for Illuminant Estimation

no code implementations14 Jan 2020 Han Gong

We present Convolutional Mean (CM) - a simple and fast convolutional neural network for illuminant estimation.

Concise Radiometric Calibration Using The Power of Ranking

no code implementations27 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.

Recoding Color Transfer as a Color Homography

no code implementations4 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.

Image Compression

Interactive Removal and Ground Truth for Difficult Shadow Scenes

1 code implementation2 Aug 2016 Han Gong, Darren P. Cosker

A user-centric method for fast, interactive, robust and high-quality shadow removal is presented.

Shadow Removal

Color Homography Color Correction

no code implementations20 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.

Camera Calibration Image Registration

Interactive Illumination Invariance

no code implementations20 Jul 2016 Han Gong, Graham Finlayson

We present a user-friendly interactive system for robust illumination-invariant image generation.

Image Generation

Color Homography

no code implementations13 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.

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