教師資料查詢 | 類別: 期刊論文 | 教師: 珽 CHING-TING TU (瀏覽個人網頁)

標題:A new approach for face hallucination based on a two-dimensional direct combined model
學年105
學期2
出版(發表)日期2017/02/01
作品名稱A new approach for face hallucination based on a two-dimensional direct combined model
作品名稱(其他語言)
著者Ching-Ting Tu; Mei-Chi Ho; Meng-Ying Lin
單位
出版者
著錄名稱、卷期、頁數Pattern Recognition 62, pp. 1-20
摘要This study develops an example-based face hallucination system based on a novel two-dimensional direct combined model (2DDCM) approach. The 2DDCM model combines the low-resolution and high-resolution pairwise images in the training set in a combined (or concatenated) matrix form in order to better preserve the correlation between the two images during the system learning process. Notably, the images processed by the 2DDCM model have the form of two-dimensional (2D) matrices rather than one-dimensional (1D) vectors, and hence the facial geometry features in the vertical and horizontal directions can be more reliably extracted. The proposed hallucination system comprises two 2DDCM-based modules, namely a global module for global facial structure reconstruction and a local module for facial texture detail compensation. In implementing the local module, a 2DDCM-based bi-directional transformation method is adopted to identify the detailed facial textures which are lost in the global synthesis process. The experimental results show that the synthesized results obtained using the proposed 2DDCM framework are in good quantitative agreement with the ground-truth images. Moreover, the proposed framework demonstrates the ability to synthesize high-resolution facial images given only a small number of training pairs, even when the facial features, alignment and appearance of the testing image differ from those of the original training set. Finally, the 2DDCM representation ensures that the synthesized results better preserve the subject-specific characteristics of the input facial image, and therefore improves the performance of downstream applications such as automatic face recognition.
關鍵字Principal Component Analysis (PCA)Canonical Correlation Analysis (CCA)EigenfacesFacial hallucination
語言英文
ISSN
期刊性質國外
收錄於SCI;
產學合作
通訊作者
審稿制度
國別英國
公開徵稿
出版型式,電子版
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