Details about Joint Photographic Experts Group (JPEG)

JPEG means Joint Photographic Experts Group....

JPEG is used for compressing stationary images using compression algorithm defined by joint ISO/CITT experts group.There are two methods in whis JPEG can be utilized 1.As a part of Jpeg and Motion jpeg . If any of the two methods are used , pictures are compressed as though they are motionless pictures.Since the compression chip is cheper,JPWF standard is commonly used for video sequences.With motion jpeg any frame can be easily accessed if it is in a digitized format.

The difference between JPEG and MPEG compression techniques is that,JPEG is fast and has the ability ot capture images that can be displayed on full-screen with full data rate.If the compression retio exceeds 20:1 the degradation in the quality of images becomes visible. Using jpeg it is possible to either compress full-color digital images or gray-scale digital images.It is not responsible for compressing black and white and moving images. JPEG is based on lossy compression technique which means that,data received is not similar to data transmitted.

An important property is Jpeg compression technique is that, the level of lossines can be changed by simply modifying the different parameters of compression.

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