Introduction
Compression of different things is important because it reduce the file size and allows more images to be stored in a given amount of disk or memory space. Digital image contains large number of bits but image compression is the key technique to overcome this problem.
Image compression is the application of data compression on digital compression that is minimizing the size in bytes of a graphics file without degrading the quality of the image, the reduction in file size allows more images to be store in a given amount of disk or memory space.
Objective is to reduce redundancy and time of the image to be sent over the internet downloaded in order to be able to store or transmit data in efficient form. Also it makes transfer of image through network, it saves space in storage devices and it saves time for image downloaded.
Types of image compression
· Lossy
· Lossless that is reducing the file size without losing image quality.
Image format
There are several different format in which image file can be compressed,The format of image includes:
· TIFF (Tagged Image File Format)
· JPEG (Joint Photographic Experts Group)
· PNG (Portable Network Graphics)
· GIF(Graphical Interchange Format)
· BMP(Bitmap)
Advantages of image compression are Reduce the data storage requirements, reduce the time for images downloaded-mail attachment, Wed pages, Photo sharing websites.
Disadvantage of image compression, Reduce reliability of image records, Reduction of information or bits, Time consuming, Disruption of data properties
Conclusion
In compressing an image, start from the original image since compression from compressed image leads to poor image quality.
Do not save to the new format if you think you need to still proceed in compressing and image. The image compression is very important in IT technology regardless of few discussed disadvantages that is having.
