LZHAM thiab Crunch compression cov tsev qiv ntawv tau raug tso tawm rau pej xeem

Rich Geldreich txhais compression tsev qiv ntawv nws tsim LZHAM и Qoob loo rau qeb pej xeem domain (Public Domain), i.e. tag nrho renounced proprietary copyrights thiab muab lub cib fim rau kev faib thiab siv nyob rau hauv ib daim ntawv los ntawm txhua leej txhua tus tsis muaj kev txwv. Rau kev txiav txim siab uas qeb ntawm pej xeem sau tsis raug lees paub, qhov kev tshwj xeeb tsim nyog raug tso tseg. Yav dhau los, cov haujlwm tau muab faib raws li MIT thiab ZLIB cov ntawv tso cai.

Lub tsev qiv ntawv Crunch muab cov cuab yeej rau compressing thiab transcoding textures yam tsis tau poob zoo siv algorithms DXTn. Crunch txhawb nqa DXT1 / 5 / N thiab 3DC cov qauv kev ntxhib los mos thiab tuaj yeem txuag qhov tshwm sim rau DDS, CRN thiab KTX hom.

LZHAM muab compression algorithm optimized rau cov khoom ntim khoom xa tuaj raws li ib feem ntawm daim ntawv thov kev ua si. Zlib tshaj API tau txais kev txhawb nqa. Ib qho ntawm cov yam ntxwv ntawm LZHAM yog qhov ua tau
siv cov rooj sib tham (txog 64 KB loj), phau ntawv txhais lus (txog 500 MB), ua haujlwm sib luag hauv ntau cov xov thiab siv cov kev hloov pauv delta, uas tso cai rau kev hloov pauv tsis pub rov ntim cov ntaub ntawv compressed lawm.

Nyob rau hauv cov nqe lus ntawm compression theem thiab packing ceev, LZHAM kev siv yog piv rau LZMA, tab sis nyob rau hauv cov nqe lus ntawm decompression ceev nws yog 1.5-8 npaug sai dua LZMA (tab sis qeeb dua zlib). Thaum muab piv nrog ZSTD, LZHAM yog ua ntej ntawm no algorithm nyob rau hauv cov nqe lus ntawm compression efficiency, tab sis yuav luag ib tug txiav txim ntawm qhov loj ntawm qab nyob rau hauv encoding ceev thiab me ntsis qab nyob rau hauv kev txiav txim siab ceev.

Tau qhov twg los: opennet.ru