The purpose of this research is to generate a character string from the DCT sign of the image and investigate whether it can be used as a password. The sign of the DCT coefficient of the low frequency component of the image is extracted by a zigzag scan, it is segmented every 6 bits and converted into a corresponding character to generate a password character string. Experimental results show that unique character strings are generated for each image. In conclusion, it was confirmed that the character string generated from the DCT sign of the low frequency component of the image can be used as a password.
J-STAGEがリニューアルされました! https://www.jstage.jst.go.jp/browse/-char/ja/
