A point cloud is considered a promising 3D representation that has achieved wide applications in several fields.However,quality degradation inevitably occurs during its acquisition and generation,communication and tra...A point cloud is considered a promising 3D representation that has achieved wide applications in several fields.However,quality degradation inevitably occurs during its acquisition and generation,communication and transmission,and rendering and display.Therefore,how to accurately perceive the visual quality of point clouds is a meaningful topic.In this survey,we first introduce the point cloud to emphasize the importance of point cloud quality assessment(PCQA).A review of subjective PCQA is followed,including common point cloud distortions,subjective experimental setups and subjective databases.Then we review and compare objective PCQA methods in terms of modelbased and projection-based.Finally,we provide evaluation criteria for objective PCQA methods and compare the performances of various methods across multiple databases.This survey provides an overview of classical methods and recent advances in PCQA.展开更多
Cultural awareness is the basis of communication,and it includes our own cultural values,beliefs and the ability to perceive the world.When students learn English and communicate with people from English culture,cultu...Cultural awareness is the basis of communication,and it includes our own cultural values,beliefs and the ability to perceive the world.When students learn English and communicate with people from English culture,cultural awareness becomes very important.Meanwhile,National English Curriculum Standards for General High School puts cultural awareness in the key position of the Core Competencies and Values of English subjects.At present,the academic research and analysis on the Core Competencies and Values of English mainly focus on the language ability,learning ability and students’learning motivation.This paper intends to explore the cultivation of high school students’English cultural awareness through qualitative research and literature collation and there are 5 parts totally in this paper.The first part is the introduction,introducing the background of cultural consciousness and the significance of research.The second part is a literature review,analyzing the previous opinions both domestically and internationally.The third part is a review of cultural consciousness,summarizing the theory,historical development and main genres of cultural consciousness.The fourth part is the exploration of the cultivation of cultural awareness,including the requirements,the problems and methods of the cultivation of cultural awareness in high school English teaching.The fifth part is the conclusion,which advocates the cultivation of cultural consciousness and the development of English subject through the summary and reflection.The significance of this paper lies in the majority of teachers to create a harmonious teaching environment,facilitate the students’cultural awareness,improve high school students’cultural understanding and cultural awareness,as well as improve high school students’English discipline Core Competencies and Values so that it could benefit the development of English in our country.展开更多
文摘A point cloud is considered a promising 3D representation that has achieved wide applications in several fields.However,quality degradation inevitably occurs during its acquisition and generation,communication and transmission,and rendering and display.Therefore,how to accurately perceive the visual quality of point clouds is a meaningful topic.In this survey,we first introduce the point cloud to emphasize the importance of point cloud quality assessment(PCQA).A review of subjective PCQA is followed,including common point cloud distortions,subjective experimental setups and subjective databases.Then we review and compare objective PCQA methods in terms of modelbased and projection-based.Finally,we provide evaluation criteria for objective PCQA methods and compare the performances of various methods across multiple databases.This survey provides an overview of classical methods and recent advances in PCQA.
文摘Cultural awareness is the basis of communication,and it includes our own cultural values,beliefs and the ability to perceive the world.When students learn English and communicate with people from English culture,cultural awareness becomes very important.Meanwhile,National English Curriculum Standards for General High School puts cultural awareness in the key position of the Core Competencies and Values of English subjects.At present,the academic research and analysis on the Core Competencies and Values of English mainly focus on the language ability,learning ability and students’learning motivation.This paper intends to explore the cultivation of high school students’English cultural awareness through qualitative research and literature collation and there are 5 parts totally in this paper.The first part is the introduction,introducing the background of cultural consciousness and the significance of research.The second part is a literature review,analyzing the previous opinions both domestically and internationally.The third part is a review of cultural consciousness,summarizing the theory,historical development and main genres of cultural consciousness.The fourth part is the exploration of the cultivation of cultural awareness,including the requirements,the problems and methods of the cultivation of cultural awareness in high school English teaching.The fifth part is the conclusion,which advocates the cultivation of cultural consciousness and the development of English subject through the summary and reflection.The significance of this paper lies in the majority of teachers to create a harmonious teaching environment,facilitate the students’cultural awareness,improve high school students’cultural understanding and cultural awareness,as well as improve high school students’English discipline Core Competencies and Values so that it could benefit the development of English in our country.
