A Wavelet-based Interpolation-restoration Method for Superresolution (wavelet Superresolution)*
نویسنده
چکیده
Superresolution produces high-quality, high-resolution images from a set of degraded, low-resolution images where relative frame-to-frame motions provide different looks at the scene. Superresolution translates data temporal bandwidth into enhanced spatial resolution. If considered together on a reference grid, given low-resolution data are nonuniformly sampled. However, data from each frame are sampled regularly on a rectangular grid. This special type of nonuniform sampling is called interlaced sampling. We propose a new wavelet-based interpolation-restoration algorithm for superresolution. Our efficient wavelet interpolation technique takes advantage of the regularity and structure inherent in interlaced data, thereby significantly reducing the computational burden. We present oneand two-dimensional superresolution experiments to demonstrate the effectiveness of our algorithm.
منابع مشابه
An Efficient Wavelet-Based Algorithm for Image Superresolution
Superresolution produces high quality, high resolution images from a set of degraded, low resolution frames. We present a new and eÆcient wavelet-based algorithm for image superresolution. The algorithm is a combination of interpolation and restoration processes. Unlike previous work, our method exploits the interlaced sampling structure in the low resolution data. Numerical experiments and ana...
متن کاملA Framework for Satellite Image Enhancement Using Quantum Genetic and Weighted IHS+Wavelet Fusion Method
this paper examined the applicability of quantum genetic algorithms to solve optimization problems posed by satellite image enhancement techniques, particularly superresolution, and fusion. We introduce a framework starting from reconstructing the higher-resolution panchromatic image by using the subpixel-shifts between a set of lower-resolution images (registration), then interpolation, restor...
متن کاملWavelet Superresolution and Quasi-superresolution in Robot Vision
This article presents results of image enhancement for robot vision. Results are obtained by superresolution techniques in wavelet domain. The calculated motion of wavelet coefficients in stationary image can enhance image quality. It can be used as interpolation information for increasing resolution. This is basis for wavelet quasi-superresolution, where one low-resolution image is interpolate...
متن کاملSingle-Image Superresolution Through Directional Representations
We develop a mathematically-motivated algorithm for image superresolution, based on the discrete shearlet transform. The shearlet transform is strongly directional, and is known to provide nearoptimally sparse representations for a broad class of images. This often leads to superior performance in edge detection and image representation, when compared to other isotropic frames. We justify the u...
متن کاملAlgorithm for Combined Wavelet Quasi- Superresolution
This article gives an outline of the novel algorithm for image superresolution based on wavelets. In this algorithm morphological operations in low-resolution image are combined with approximation of high-resolution wavelet coefficients. Since it involves only a single original low-resolution image, we call it quasi-superresolution. The final result is high-resolution image obtained from a sing...
متن کامل