Image Compression

 

What is image compression?

 Compression is the removal of redundant data. Image compression reduces number of bytes necessary to represent an image, while keeping the visual quality of an image to a desired value.

Why is it necessary?

 Image requires large amount of disk space for storage and bandwidth for transmission. An image of 512x512 pixels with 1 byte of information per pixel results in 0.25 MB file. If several such images are stored, we will soon see that the hard disk is full. Therefore, compression is essential for efficient archiving. Also, to transfer huge size images via internet, we would like to use compression in order to minimize the number of bytes to transfer and make the transfer time shorter.  Image compression is a widely used technique that reduces the storage space associated with the large image files, while preserving the image quality.

SIPL and image compression

Signal and Image Processing Lab is devoted to theoretical issues and practical applications of image compression. Its research team focuses on state of the art compression techniques for different applications. Wavelet based image compression methods are actively pursued by graduate students of SIPL.

 
  Autofocusing
  Digital Watermarking
  Intelligent Digital Satellite Receiver System
  PCB Soldering Inspection
  Digital Signal Processing
  Image Processing
  Machine/Robot Vision
  Statistical Signal Processing
  Pattern Recognition
  Image Compression

 

Digital Video

 

Visual Communications