![]() ![]() Furthermore, this standard defines a codec which tells how an image can be encoded into a stream of bytes and decoded back into an image. It discards the information of high frequency that has sharp transitions in intensity as well as in colour hue. The DCT actually converts each frame of the video from the spatial domain to a frequency/transform domain. The paintings and photos of realistic scenes that have smooth variations of colour can be best illustrated by this format.Ī technique used in JPEG format to compress files is lossy compression which is based on DCT (Discrete Cosine Transform) as it is the most practical Mathematical operation. ![]() ![]() Digital Cameras and other photographic image capture devices widely use this JPG format. ![]() It is widely used in emails and also when images are to be posted on websites. It has the ability to compress the file to one-tenth of its original size. This extension is compressed using a lossy algorithm that is why there can be a reduction in the quality of the photograph. It takes less time over the internet to upload and download due to smaller size which results in saving of bandwidth. Files stored in this format are small in size that is why they can be uploaded and downloaded with ease. ![]()
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