Jpeg Image Compression Using Discrete Cosine Transform - A Survey

Understand

Due to the increasing requirements for transmission of images in computer, mobile environments, the research in the field of image compression has increased significantly.

• Image compression plays a crucial role in digital image processing, it is also very important for efficient transmission and storage of images.
• When we compute the number of bits per image resulting from typical sampling rates and quantization methods, we find that Image compression is needed.
• Therefore development of efficient techniques for image compression has become necessary .This paper is a survey for lossy image compression using Discrete Cosine Transform, it covers JPEG compression algorithm which is used for full-colour still image applications and describes all the components of it.