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Synthetic Aperture Radar (SAR) images despeckling technique has been developed for many years. Most methods cannot strike a good balance between smoothing speckle noise and preserving structure. In order to both smoothing speckle and preserving structure, we proposed a despeckling method using singular value thresholding and iterative regularization which inspires from spatially adaptive iterative...
In this paper, a fast view scheme of mass remote sensing images based on image pyramid is described and implemented. The key techniques in this scheme are tiling, image pyramid, and cache scheduling management. This scheme employs tiling to break the limit of the Windows process memory and improve the I/O speed of hard disk. A wavelet based image pyramid is built for multi-resolution displaying. Cache...
The study of driver fatigue can contribute greatly to avoiding road accidents. Localized energy analysis was performed on the vehicle state information, such as, steering angle and trace profile. Before the energy analysis, wavelet analysis is used to reduce the effect of noise. The experimental results indicate that the trend of power changes with the drivers' state of mind, which present possibility...
A pixel-level image fusion method based on multi-to-multi turbo iterative is proposed. An innovative multi-to-multi image fusion idea is introduced in this paper. Undoubtedly, it's impossible to cover all the information contained in several images by one image. So multi-to-multi image fusion system is much more reasonable than multi-to-one image fusion system. Based on this idea, getting several...
In this paper we present the enhanced translation-invariance contourlet transform based on alpha-stable model and its application in edge detection of synthetic aperture radar (SAR) images. The translation-invariance contourlet transform is built upon the translation-invariance wavelet decomposition and nonsubsampled directional filter banks (DFB). Due to the impulsive nature of multi-revolution coefficients...
Images of remote-sensor (RS) become to be an important way on Earth observation. However, the high resolution of most RS images causes that the images contain magnanimity data sets, which makes it difficult to browse using usual schemes. In this paper, a fast browsing scheme based on pyramid decomposition is presented. Unavoidably losing information after pyramid decomposition, it is expected not...
With the high resolution instruments, the data collected by the space solar telescope (SST) satellite will be a large volume. Meanwhile, due to the limited storage and down-link capacity, onboard data compression is needed. In this paper, a real time image compression scheme is proposed. According to the requirement of SST and the space environment restriction condition, we adopt the compression algorithm...
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