Research On Paper Work Recognition Based On Mobile Terminal

Daily homework can help students consolidate their knowledge and deepen their understanding.It not only has a positive impact on students' academic performance,but also lays a good foundation for the study of new knowledge.It is an indispensable part of the teaching process.The traditional paper form is inconvenient to carry and the review time is long.The registration,statistics and analysis period of the students'answering situation is long,and the teacher's teaching activities cannot be replied in time.Under the impetus of "Internet+education",school management tends to be informatized,classrooms and information technology are gradually integrated,and the form of teaching and learning has undergone tremendous changes.The electronic workbook,online assignment correcting system and job management system combined with information technology have begun to become an integral part of K12 classroom teaching,which can enhance students' interest,enhance teaching effect and guide teachers to adjust teaching strategies.However,traditional paper form occupies an important position in school teaching,realizing the digitization of traditional paper work,collecting,counting and analyzing data,which is of great significance to education and teaching.With the continuous improvement of the performance of mobile terminals,especially the performance of the camera,the number of pixels from hundreds of thousands to millions,the image quality is greatly improved,plus white balance and auto focus function,the camera effect of mobile terminals is no less than professional camera.Moreover,mobile terminals are now able to smoothly run tasks that were previously only available on computers,such as face recognition,virtual reality,and so on.Mobile terminals are integrated into all aspects of life with powerful performance,affordable price and convenient use.The paper discusses the problems existing in the traditional paper form review of the school,combines the mobile terminal with the traditional paper form.The digital image processing technology is used to study the acquisition,processing and recognition of the students' homework image,and the paper work recognition framework based on mobile terminal is designed.(1)Comparing the difference between the online operation system and the traditional paper operation,the problems existing in the traditional paper work are proposed,and the problems of the prior art using the mobile terminal to identify the workbook are discussed.(2)The quality of the acquired image has a great influence on the subsequent recognition.In order to obtain a high-quality workbook image,the image integrity,rotation angle,perspective angle and image clarity are determined in real time during the image acquisition phase.(3)Using the Scale Invariant Feature Transform algorithm to match the target image with the template image,correct the intercepted workbook,and use the workbook structure information carried in the barcode to divide the workbook by region.After that,the objective questions are automatically identified and the answers are filled and the scores are counted.The common convolutional neural network,the Dropout layer and the BN layer are combined to recognize the handwritten digits,and the subjective image is compressed and uploaded for the teacher to review online.(4)The demand analysis and feasibility analysis of the job identification based on the mobile terminal are carried out,and the functions and processing flowcharts of the core module are designed.