Abnormal event detection in crowd scenes using quaternion discrete cosine transformation signature.
Huiwen GuoXinyu WuNannan LiHuan WangYen-Lun ChenPublished in: SPAC (2014)
Keyphrases
- abnormal event detection
- discrete cosine transformation
- abnormal events
- spatial domain
- dct coefficients
- image compression
- digital watermark
- daily life
- image authentication
- adaptive quantization
- frequency domain
- low bit rate
- image processing
- digital signature
- rate distortion
- computer vision
- jpeg images
- signature scheme
- discrete cosine transform
- video coding
- signal processing
- computational complexity