扩频图像隐写
spread spectrum image steganography
大容量数据图像隐藏
high capacity lossless data hiding
数字图像隐藏
digital image hiding
digital image information hiding
图像隐蔽通信
image hidden communication
图像隐秘检测
detection of image steganography
图像隐形水印
invisible image watermarking
计算机图像图形处理
computer image and figure processing