This book is a collection of the papers accepted by the ICIVIS 2021--The International Conference on Image, Vision and Intelligent Systems held on June 15-17, 2021, in Changsha, China. The topics focus but are not limited to image, vision and intelligent systems. Each part can be used as an excellent reference by industry practitioners, university faculties, research fellows and undergraduates as well as graduate students who need to build a knowledge base of the most current advances and state-of-practice in the topics covered by this conference proceedings.