Change cvpr.sty, iccv.sty and iccv_eso.sty to accomandate your version.
main.tex is for paper submission and its article tex is in folder articles
Folder articles includes abstract.tex, introduction.tex, related.tex, etc. This structure is easy for group people to incoporate with each other.
It is easy to create a folder img and pictures can be placed inside for simplicty.
Folder supple is for supplementary material using ICCV19 submission template, since supplementary material shares the same template as submission paper.
Folder rebuttal is for rebuttal using ICCV19 rebuttal template.
macor.tex contains self-defined commands.
mmstyle.sty is the Latex styles for paper writing in Multimedia Lab.