Edge Detection and Reduction of Brightness of Students' Bubble Form Images

Ilkin S., Sahin S.

6th International Conference on Graphic and Image Processing (ICGIP), Beijing, Çin, 24 - 26 Ekim 2014, cilt.9443 identifier identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası: 9443
  • Doi Numarası: 10.1117/12.2178842
  • Basıldığı Şehir: Beijing
  • Basıldığı Ülke: Çin
  • Kocaeli Üniversitesi Adresli: Evet

Özet

Optical Mark Recognition (OMR) is a traditional data input technique and an important human computer interaction technique which is widely used in education testing. This paper proposes a new idea for grading multiple-choice test which is based on a camera on smartphone. The system key techniques and relevant implementations, which include the image scan, edge detection and reduction of brightness on colorful bubble form images, are presented.