this code does gray scale image compression
to use this codes u have to first convert RGB image to grayscale and also its colormap.....
IMComp is an Image COmpression Software based on MATLAB used to compress various JPEG images. This software is primarily useful for compressing images which are being taken with the help of Digital Cameras and Mobile Phones
Image compression using wavelet transform
*wavelet transform give better information about non-stationary signals in time domain
The SPIHT method is not a simple extension of traditional methods for image compression, and represents an important advance in the field. The method deserves special attention because it provides the following:
Highest Image Quality
The image compression routine uses the concept of factorizing the image-matrix & using only the required 'key' values that represent the original image-matrix.
There is loss of data, in the sense that, the original matrix cannot be...
Used in image compression, the haar transform is an alternative to the DCT transformation. This file compute an n*n Haar matrix. (same use as "dctmtx")
Fast Efficient Lossless Image Compression System
This is used for lossless image compression of the images . it is vlsi oriented algorithm
Matlab image reader for almost all types of TGA files
[I,map] = tga_read_image('testimages/test9.tga');
Trio is an Image/video Analysis tool/framework that utilizes the JMF framework to explore image compression algorithms techniques. The framework utilizes image vision algorithms to make image analysis easier.
Improved Gray Scale (IGS) codes are used for the elimination of false contouring in images, and image compression. This Python program generates the IGS codes for a set of input gray level values.
The k-means algorithm is widely used in a number applications like speech processing and image compression.
This script implements the algorithm in a simple but general way. It performs four basic steps.
1. Define k arbitrary...
When images are uploaded Wordpress automatically sets the image compression to 90. This plugin lets you set the compression value; accepted values are from 1 to 100.
1. Unzip the jpg-image-quality directory
Easy to use function. Let's you save the current figure as an image file. A pop-up dialog prompts user where to save the image and what image compression to use. Default dpi is 300. User can specify dpi and whether to use default size or current...
IMCLIPBOARD behaves very much like MATLAB's "CLIPBOARD" function, but it works on image data. You can paste image data from the clipboard to a MATLAB array, and copy MATLAB image data to the clipboard.
AEM RotateImage Flash Applet is a slideshow that will rotate away your images with an optional swaying motion. This Flash applet let's you create Flash movies on the fly It allows you to set the image compression, You can set the rotation speed...
For any structuring element other than 'square' or 'disk' this function is way faster than imerode.m and imdilate.m (more than an order of magnitude). It's also handy when you don't have the Matlab Image Processing Toolbox :-)...
IMAGEROTATION able to rotate an image. You can an image by any angle in degree.
This is a simple implementation of matlab IMROTATE and using affine transformation matrix.
Nothing new about this code.
The Image contains digits of 6 and 9, after removing all the 6, you could see the ecard message.
The program is written and tested under GNU Octave 3.2.3, however, it should be running fine under matlab with image processing toolbox.
Image can be compressed using KL transform the code demonstrates the method
This Technique is very useful for the Programmer/Researcher/Users for color images compression type RGB. This Technique is using three level DWT and one-dimensional DCT.