Controllable and Gradual Facial Blemishes Retouching via Physics-Based Modelling
This work addresses the need for more realistic tools in simulating facial pigmentation and acne changes, rather than just beautifying images, which is incremental as it builds on existing retouching methods.
The paper tackles the problem of unrealistic intermediate steps in facial blemishes retouching by proposing CGFR, a method based on physics-based modelling that achieves controllable and gradual retouching, with experimental results showing realistic simulation of blemishes' gradual recovery on clinical data.
Face retouching aims to remove facial blemishes, such as pigmentation and acne, and still retain fine-grain texture details. Nevertheless, existing methods just remove the blemishes but focus little on realism of the intermediate process, limiting their use more to beautifying facial images on social media rather than being effective tools for simulating changes in facial pigmentation and ance. Motivated by this limitation, we propose our Controllable and Gradual Face Retouching (CGFR). Our CGFR is based on physical modelling, adopting Sum-of-Gaussians to approximate skin subsurface scattering in a decomposed melanin and haemoglobin color space. Our CGFR offers a user-friendly control over the facial blemishes, achieving realistic and gradual blemishes retouching. Experimental results based on actual clinical data shows that CGFR can realistically simulate the blemishes' gradual recovering process.