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This article will explain in detail what are the differences between jpeg and jpeg2000. The editor thinks it is very practical, so I share it for you as a reference. I hope you can get something after reading this article.

Difference: JPEG2000 is an upgraded version of JPEG and its compression ratio is about 30% higher than that of JPEG. JPEG2000 uses wavelet transform and efficient data organization method EB-COT instead of 8X8DCT, and uses arithmetic coding, so that the coding performance is about 2dB higher than that of JPEG at the same compression ratio.

JPEG2000 is an upgraded version of JPEG, its compression ratio is about 30% higher than JPEG, and supports both lossy and lossless compression. An extremely important feature of JPEG2000 format is that it can achieve progressive transmission, that is, first transmit the outline of the image, and then gradually transfer data, constantly improve the image quality, so that the image from hazy to clear display. JPEG2000 can be used not only in the traditional JPEG market, such as scanners and digital cameras, but also in emerging fields, such as network transmission, wireless communication and so on.

JPEG 2000 is an image compression standard based on wavelet transform, which is created and maintained by Joint Photographic Experts Group. JPEG 2000 is generally regarded as the next generation image compression standard to replace JPEG (based on discrete cosine transform) in the future. The file name of a JPEG 2000 file is usually. The jp2,MIME type is image/jp2. JPEG2000 has a higher compression ratio and does not produce block blur defects produced by the original JPEG standard based on discrete cosine transform. JPEG2000 supports both lossy and lossless compression. In addition, JPEG2000 also supports more complex progressive display and downloads.

The difference between JPEG2000 and JPEG

1) efficient coding method. JPEG2000 uses wavelet transform and efficient data organization method EB-COT instead of 8X8DCT, and uses arithmetic coding, so that the coding performance is about 2dB higher than that of JPEG at the same compression ratio.

2) ROI coding. In some applications, one area of the image is more important than other regions (background). This important region is often called interest. JPEG2000 supports higher quality coding of ROI than Yingjing.

3) scalability coding. JPEG2000 supports spatial resolution scalability and signal-to-noise ratio scalability coding similar to hierarchical coding. The latter means that the reconstructed image with different signal-to-noise ratio can be obtained by truncating at different points of the encoded stream.

This is the end of the article on "what are the differences between jpeg and jpeg2000". I hope the above content can be of some help to you, so that you can learn more knowledge. if you think the article is good, please share it for more people to see.

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