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FlexiCurve: Flexible Piecewise Curves Estimation for Photo Retouching

Chongyi Li1* Chunle Guo2* Shangchen Zhou1 Qiming Ai1 Ruicheng Feng1 Chen Change Loy1

1S-Lab, Nanyang Technological University 2VCIP, CS, Nankai University

Introduction

Contributions

  • We present an approach that performs photo retouching by piecewise curves estimation through a deep network.
  • We explain how piecewise adjustment curves can be designed as the network’s output.
  • We devise a theoretically sound method, modeling the spatial dependencies among multiple estimations, to cope with diverse and heterogeneous regions in images, producing visually pleasing results both globally and locally.

Code, data and models are available at https://li-chongyi.github.io/FlexiCurve/

Overview

Quantitative Comparisons

Visual Comparisons

PNG Curves