Edge Detection and Reduction of Brightness of Students' Bubble Form Images
6th International Conference on Graphic and Image Processing (ICGIP), Beijing, Çin, 24 - 26 Ekim 2014, cilt.9443, (Tam Metin Bildiri)
- 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.