关于光照增强曲线

[Zruto]

您好，想问您关于光照增强曲线是受什么启发设计出来的，仅是编辑软件的曲线调整吗？有没有具体的参考文献呢？

[l1teng]

Hi, Zruto.

During my review, I was also puzzled by this problem. At some period of time, I checked a blog that mentioned this idea. The idea that use an estimation curve to adjust image illumination and color may be inspired by this literature. I hope can help you.

@inproceedings{yuan2012automatic,
  title={Automatic exposure correction of consumer photographs},
  author={Yuan, Lu and Sun, Jian},
  booktitle={European Conference on Computer Vision},
  pages={771--785},
  year={2012},
  organization={Springer}
}

However, I do not remember where the blog is from. If someday I remember, I will pin the blog link here as a reference.

Best wishes.

-- Teng Li

[Zruto]

Hi, Zruto.

During my review, I was also puzzled by this problem. At some period of time, I checked a blog that mentioned this idea. The idea that use an estimation curve to adjust image illumination and color may be inspired by this literature. I hope can help you.

@inproceedings{yuan2012automatic,
  title={Automatic exposure correction of consumer photographs},
  author={Yuan, Lu and Sun, Jian},
  booktitle={European Conference on Computer Vision},
  pages={771--785},
  year={2012},
  organization={Springer}
}

However, I do not remember where the blog is from. If someday I remember, I will pin the blog link here as a reference.

Best wishes.

-- Teng Li

Thank you so much. You've done me a big favor. Looking forward to this blog. I remember, the author mentioned this paper in related work，which is 【36】

[l1teng]

Hi, @Zruto.

I found it. Here is the blog. I hope can help you.

https://blog.csdn.net/qq_36560894/article/details/108024748

Yep, literature [36] is referenced in the Zero-DCE paper.

Yuan and Sun [36] proposed an automatic exposure correction method, where the S-shaped curve for a given image is estimated by a global optimization algorithm and each segmented region is pushed to its optimal zone by curve mapping. Different from [36], our Zero-DCE is a purely datadriven method and takes multiple light enhancement factors into consideration in the design of the non-reference loss functions, and thus enjoys better robustness, wider image dynamic range adjustment, and lower computational burden.

Best wishes.

-- Teng Li

[Ethanwolfie]

公式可以推出来，映射曲线为二次曲线f(x)=ax^2+bx+c，满足条件f(0)=0和f(1)=1以及(0,1)区间内单调增，就可以得到c=0，a+b=1，a属于区间[-1,1]

[tkone2018]

@Zruto @Ethanwolfie @litun5315 想问下各位我测试过曝光图片发现性能不是很好，但是我看到训练集里是多曝光图片，感觉应该同时处理低曝光和过曝光，各位有试过过曝光测试吗？还是说需要修改enhance模块？谢谢