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In order to improve the effectiveness of remote sensing image enhancement, an enhancement algorithm based on multi-scale Retinex was presented and which can make up the deficiency of traditional wavelet algorithm that losing part information when image enhancement. The principle and realization methods of multi-scale Retinex and wavelet were calculated. The experiment of panchromatic and multicolor...
To further enhance the performance of existing watermarking scheme, watermarking algorithm based on kernel fuzzy clustering and singular value decomposition in the complex wavelet transform domain is proposed in this paper. Firstly, the host image is decomposed by complex wavelet transform. Then, the singular value of the low-frequency coefficients after image complex wavelet is selected as an embedded...
In this paper, it is suggested that the ultrasonic guided wave signal processing based on the distance of lance or angle cosine. In those schemes, the excitation signal is defined as the active detected signal, while the receiving signals is treated as the passive detection signal. The similarity coefficients between the excitation signal and the receiving signals with the help of a sliding window...
Due to enormous information in images and people's increasing demand for it, high-speed sampling causes large date transmission and storage. In order to solve this problem, compressed sensing is proposed to directly acquire the important information about the images. As the use of an efficient representation implies the compactness of the compressed file, in this work, we apply a directional multiresolution...
In the infrared diagnosis of power equipment, the thermal imagery collected from the transmission joint can be affected by several external interferences, which lead to bad contrast and mixed with various types of noise. This phenomena is not conducive to make fault diagnosis accurately, therefore the denoising and enhancement in thr thermal imagery are very important. Several external factors which...
Automatic Chinese handwriting verification is a technique to online verify the handwriting with those in the pattern library by machines. This paper presents an adaptive online Chinese handwriting verification method for personal identification. A group of 4th order B-spline wavelet is developed to make wavelet decomposition for each stroke of the handwriting according to wavelet decomposition formulas...
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