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Digital image processing technology presents new challenges for the security of the image information, which makes image authentication as a problem to be addressed. Digital watermarking plays an important role in multimedia information security. This paper proposed a dual watermarking method to do tamper location and self-recovery, which utilizes self-embedding technology to hide eigenface into the...
The face image database is essential to evaluate the face detection and recognition algorithms. Out-of-focus blur is one of the important factors which may influence the detection and recognition results. To investigate the effect of out-of-focus blur on the performance of face recognition system, a new face database concentrating on the factor of out-of-focus blur was built. Two typical acquisition...
Face Image Retrieval is an important application of Content-Based Image Retrieval. A more practical model of face image retrieval system is analyzed in this paper. Moreover a suitable algorithm based on power law transformation(PLT) is introduced. The feature space is spanned by the training set enlarged from the input query image rather than images in the retrieving dataset. Experiments and comparison...
Digital ID images are getting wide use in our social life. The automatic evaluation of the images’ quality is an important technique in the applications. An evaluation method on the content-related quality of ID images is introduced in this paper. The important attributes and their evaluating methods are analyzed in accordance with the ISO/IEC and ICAO standards. Considering the special features and...
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