Flexible Piecewise Curves Estimation for Photo Enhancement

Understand

This paper presents a new method, called FlexiCurve, for photo enhancement.

• Unlike most existing methods that perform image-to-image mapping, which requires expensive pixel-wise reconstruction, FlexiCurve takes an input image and estimates global curves to adjust the image.
• The adjustment curves are specially designed for performing piecewise mapping, taking nonlinear adjustment and differentiability into account.
• To cope with challenging and diverse illumination properties in real-world images, FlexiCurve is formulated as a multi-task framework to produce diverse estimations and the associated confidence maps.