Halcon-based Auto Information Extract System Of Art Examination Paper

Following the diversified development of examination paper marking manners, onlinemarking is being used more and more widely. Initially, we must capture the examinationpaper image so as to online marking. For fair, the examination paper can’t contain anyexaminees’ information in the online marking procedure. So need to cover the examinees’information in the procedure of online marking. Before the procedure of cover examinees’information, it should store the information and make it correspond to its examination paperimage information.There is a barcode which is stuck to the examinees’examination paper who is major inart. It gets the examinees’ information from the barcode. Because the restriction of thebarcode decode distance, decode angle and decode speed, the traditional barcode decodedevice which is based on photoelectric sensor has limited application in the field of autoinformation capture system. When capture a big size image that has uncertain barcodeposition and barcode angle that is relative to the image edge. So it needs a relatively longtime to decode a barcode when use the barcode decode device which is based onphotoelectric sensor. The device need man to manipulate and takes no advantages in realizeautomation. And because of the software is embedded in hardware at the beginning of sell,which makes people can’t change it, so that the storage of barcode information data isrelatively difficultly.In this paper, use the software of MVtec Halcon to recognize the barcode on the imageof examination paper and cover the examinee’s information which is for online marking. Itcan quickly position the barcode, recognize it and store the examination paper imagethrough MVtec Halcon. Barcode and corresponding image of examination paperinformation is stored in Excel2007database. Last, package all the code which is used torealize the function above and use Visual Studio C#to release it. Realized the target of autocapture art examination paper information, then it can carry out online marking. Themethod solved the problem of need large area, difficult to storage the examinees’information and marking in art examination paper marking. Making teachers’ work moreefficiency, no longer boring and monotonous and decrease the human error. And weverified the effectiveness and reliability of this plan.