1 / 39

JPEG-LS

???JPEG-LS. ????????????????????specifies encoder processes for converting source image data to compressed image dataspecifies decoder processes for converting compressed image data to reconstructed image dataprovides guidance on how to implement these processes in practice. JPEG-LS?????. JPEG-LS

africa
Download Presentation

JPEG-LS

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

    1. JPEG-LS ISO 14495

    2. ???JPEG-LS ???????????????????? specifies encoder processes for converting source image data to compressed image data specifies decoder processes for converting compressed image data to reconstructed image data provides guidance on how to implement these processes in practice

    3. JPEG-LS????? JPEG-LS????????????????/???????, ISO-14495-1/ITU-T.87,??????LOCO-I??(LOw COmplexity LOssless COmpression for Images)?(?:http://www.hpl.hp.com/loco/) ?????:????????,?????????????????,???????????(loss, ????);?????loss = 0.

    4. LOCO-I Marcelo J. Weinberger, Gadiel Seroussi, and Guillermo Sapiro(1996) “LOCO-I: A Low Complexity, Context-Based, Lossless Image Compression Algorithm”, in Proceedings of Data Compression Conference, J. Storer, editor, Los Alamitos, CA, IEEE Computer Society Press

    5. LOCO-I ?? ?????Huffman????????????

    6. ?????? ?????????????:???????? ???????????????????,xi=x1x2…xi ,???????????????????p( .|xi)???xi+1. ??????????,????????????: ??,??xi???????xi+1?????xxi+1 ??xi+1????,????????????? ??xi+1?????????ei+1 = xi+1-xxi+1,?????

    7. LOCO-I??? ?? ????? ???? ?????? ?? Golomb-Rice?? ?????? ???? ???????

    8. Causal Template for LOCO-I LOCO-I?????????????: x?????,a b c d e???????

More Related