OBE理念下项目驱动的数字图像处理教学研究

Research on project-driven digital image processing teaching with the OBE concept

传统数字图像处理教学强调经典方法讲解而忽略文献新方法拓展,强调单个算法实现而忽略算法项目化开发,强调个人能力锻炼而忽略团队精神培养。为克服这些问题,以工程教育专业认证的成果导向教育(OBE)理念,探索了一种新的基于项目驱动的教学方式。其教学目标由电子信息类专业毕业要求分解的指标点确定。教学过程采用CDIO的项目教学法,分为项目调研、项目设计、项目实现和项目运行反馈4个阶段,并以图像阈值分割专题为例,详细阐述学生在不同阶段所需完成的相关工作以及由此而培养和锻炼的相关能力和素质,践行将能力培养与素质教育贯穿于整个项目驱动教学过程之中。最后利用教学质量评价和反馈,持续改进教学过程中的学生能力培养短板问题。通过4年的教学实践表明,基于OBE理念的项目驱动教学方式不仅有效克服了传统教学方式存在的弊端,而且提升了学生的综合能力,培养了学生的综合素质。

The traditional teaching of digital image processing emphasized the explanation of classic methods,the implementation of each single algorithm,and the training of individual abilities,while neglecting the expansion of new methods in literature,the project development of algorithms,and the cultivation of team spirit.In order to overcome these problems,a new project-driven teaching mode was explored based on the outcomes-based education(OBE)concept certified by the profession of engineering education.Concretely,the teaching goals were determined by the index points of the graduation requirements for electronic information majors.Using the project teaching method of CDIO,the teaching process was divided into four stages:project investigation,project design,project implementation,and project operation feedback.A special subject on image thresholding segmentation was demonstrated as an example to explain in detail the works conducted and abilities/qualities fostered/trained in different stages.As a result,the entire teaching process centered on ability training and quality education.Finally,the assessment and feedback on the quality of teaching and learning were employed to constantly address the shortcomings in the development of students’skills.Through four years of teaching practice,the project-driven teaching method based on the OBE concept has been proven effective not only in overcoming the disadvantages of the traditional teaching method,but also in enhancing students’comprehensive ability and quality.