Wavelet compression algorithm applied to abdominal ultrasound images

Compression of ultrasound images using wavelet based space- frequency partitions

This paper describes the compression of grayscale medical ultrasound images using a new compression technique, space-frequency segmentation. This method finds the rate-distortion optimal representation of an image from a large set of possible space-frequency partitions and quantizer combinations. The method is especially effective when the images to code are statistically inhomogeneous, which i...

Wavelet Compression of Multispectral Images

Image compression has been one of the mainstream research topics in image processing. The compression methods are usually developed for images visible to humans , i.e. for gray-scale or RGB images. Recent advances in the eld of remote sensing, however, require us to compress multispectral images. Many methods used in the traditional lossy image compression can be reused also in the compression ...

The Wavelet Transform as a Classification Criterion Applied to Improve Compression of Hyperspectral Images

Genetic Algorithm Applied to Fractal Image Compression

In this paper the technique of Genetic Algorithm (GA) is applied for Fractal Image Compression (FIC). With the help of this evolutionary algorithm effort is made to reduce the search complexity of matching between range block and domain block. One of the image compression techniques in the spatial domain is Fractal Image Compression but the main drawback of FIC is that it involves more computat...

Parallel Beamformation Method to Enhance Ultrasound Images

Contrast resolution and detail resolution are two important parameters in ultrasound imaging. This paper presents a new method to enhance these parameters, simultaneously. A parallel auxiliary beamformer has been employed whose weightings are such that an estimation of the leaked signal through the main beamformer is obtained. Then the output of main beamformer is modified according to the ...