TY - GEN
T1 - Contextual dictionaries for image super resolution
AU - Yu, Wei
AU - Yao, Hongxun
AU - Liu, Xianming
AU - Ji, Rongrong
AU - Sun, Xiaoshuai
AU - Xu, Pengfei
PY - 2011
Y1 - 2011
N2 - Traditional super resolution (SR) methods based on sparse representation have shown their excellent performance, however, the methods usually perform even worse when the input images and the training samples are diverse. Considering this problem, this paper presents a novel super resolution method based on sparse representation with contextual dictionary. Through adopting discriminative features instead of common features, the method train and use contextual dictionary in the SR process. Additionally, the method uses the first-order and second-order gradients of patch as representation, which ensures the neighbor information is introduced in the SR processing. The experiment results demonstrate the performance of this method has been promoted than other traditional method.
AB - Traditional super resolution (SR) methods based on sparse representation have shown their excellent performance, however, the methods usually perform even worse when the input images and the training samples are diverse. Considering this problem, this paper presents a novel super resolution method based on sparse representation with contextual dictionary. Through adopting discriminative features instead of common features, the method train and use contextual dictionary in the SR process. Additionally, the method uses the first-order and second-order gradients of patch as representation, which ensures the neighbor information is introduced in the SR processing. The experiment results demonstrate the performance of this method has been promoted than other traditional method.
KW - K-SVD
KW - contextual dictionary
KW - sparse representation
KW - super resolution
UR - https://www.scopus.com/pages/publications/80755143926
U2 - 10.1145/2043674.2043718
DO - 10.1145/2043674.2043718
M3 - 会议稿件
AN - SCOPUS:80755143926
SN - 9781450309189
T3 - ACM International Conference Proceeding Series
SP - 150
EP - 153
BT - ICIMCS 2011 - 3rd International Conference on Internet Multimedia Computing and Service, Proceedings
T2 - 3rd International Conference on Internet Multimedia Computing and Service, ICIMCS 2011
Y2 - 5 August 2011 through 7 August 2011
ER -