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Image fusion algorithm based on wavelet transform was proposed in this paper to improve quality of image and meet the needs of applications of vision. Because of the high frequency component and low frequency component representing different information of an image, two or more images to be fused should be firstly decomposed into sub-images with different frequency. Then, the different rules of fusion...
Speaker lip motion stands out as the most linguistically relevant visual feature for speech recognition. Lip reading is an active field that receives much attention from computer scientists. Its applications take part not only in science, such as a speech recognition system, but also in social activities, such as teaching pronunciation for deaf children in order to recover their speaking ability,...
Due to no navigation in small area of the existing navigation system, we proposed an image-based matching navigation system for people with disabilities can walk in the designated area. Firstly, acquire and process the image captured from specified area by CCD digital video camera to establish Benchmark Image Library. And then pre-process the real-time image captured in walking to get Real-time Image...
A bi-watermarking algorithm basing on Contourlet transform is proposed in this paper. The algorithm adopts different methods to insert watermark into the low frequency and high frequency of the host image respectively. Firstly, perform Contourlet transform to the host image, then choose the low frequency to embed the watermark combined with Singular Value Decomposition(SVD), finally, putting coefficients...
A novel digital image watermarking scheme is proposed in this paper, which embeds a digital watermark into the DCT coefficients of the host image based on human visual system (HVS), and the locations of embedding watermark are saved as key. The proposed algorithm is able to extract the watermark without requiring the original image only through utilizing independent component analysis (ICA) and the...
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