DATA ENCODING AND DECODING

摘要

A video data encoding method for encoding an array of video data values includes frequency-transforming the video data values according to a frequency transform, to generate an array of frequency-transformed values by a matrix-multiplication process using a transform matrix having a data precision greater than six bits.

主权项

1. A video data encoding method for encoding an array of video data values, the method comprising the steps of:
frequency-transforming the video data values according to a frequency transform, to generate an array of frequency-transformed values by a matrix-multiplication process using a transform matrix having a data precision greater than six bits, the transform matrix having coefficients defined by at least a subset of the following values: (a) for the case that the frequency transform is a discrete cosine transform: (b) for the case that the frequency transform is a discrete sine transform:abcdcce-cd-a-cbb-dc-a  the coefficient values being selected according to the data precision from values substantially equal to values listed in the following tables: (a) for the case that the frequency transform is a discrete cosine transform:7-bit8-bit9-bit10-bit11-bit12-bit13-bit14-bita128256512102420484096819216384b1663326651329265853171063321266c721442885761153230646129224d1783567131426285257031140722813e150301601120324064811962219244f10020039979815963192638512769g3671143285570114122824563h1813617221445289057801156023120i1723456891379275855161103222063j1603206391278255651131022520450k140281562112322464493898617972l11422945891518303660732114642m8717434769413892777555511109n50101201403806161232236446o18367214529057911582316p1813617221444288857771155323106q1793577141428285657131142622852r1753517011403280656111122222445s1713416831365273154621092421848t1643286561312262452491049720995u155310619123824764952990519810v145291581116323254650930118601w134268536107121434286857117143x12324649198219653929785915718y10821643386617323463692713853z9218436773414692937587511749A771543086151231246149239846B62124247494988197739547908C4487174348697139327875573D265110320541082016413281E715305911823647394615-bit16-bit17-bit18-bit19-bita3276865536131072262144524288b4253285065170129340259680517c184483689673791147582295164d4562791253182507365014730028e3848976977153954307909615817f2553851077102153204306408612g9126182523650473009146018h4624092479184958369917739833i4412688253176506353011706022j4090181802163603327207654413k3594471887143775287550575099l2928358566117132234265468530m222194443788874177749355498n128922578451569103137206275o46329264185283705774113p4621292424184849369697739394q4570491407182815365630731260r4489089779179559359118718236s4369587391174781349562699125t4199083979167959335918671836u3961979239158477316955633909v3720274404148808297616595233w3428568570137140274281548561x3143662871125743251486502971y2770655412110825221650443299z234984699793993187986375972A196923938478767157535315070B158163163163263126525253051C11146222924458489168178337D6562131242624852497104993E189137827564151293025820-bit21-bit22-bit23-bit24-bita104857620971524194304838860816777216b1361035272207054441401088828021776560c5903281180657236131447226279445255d1460056292011258402241168044823360895e123163524632694926539985307719706155f81722516344503268899653779913075597g292035584070116814123362824672564h1479667295933359186671183733423674667i1412045282409056481791129635822592717j1308827261765352353071047061320941227k115019923003974600795920159018403179l93706018741193748238749647714992954m71099514219912843981568796211375925n412549825098165019633003936600785o14822729645459290811858152371630p1478788295757659151521183030523660609q1462520292504058500801170016023400319r1436472287294457458881149177522983550s1398249279649855929961118599222371984t1343671268734253746841074936821498736u1267818253563650712721014254520285089v119046623809314761862952372419047449w109712321942464388491877698217553965x100594220118844023769804753716095074y88659817731973546394709278714185574z75194415038893007778601555512031111A63013912602782520556504111210082224B5061011012202202440540488098097618C356674713348142669628533915706783D20998741997383994716798943359787E60515121030242061484122968243 (b) for the case that the frequency transform is a discrete sine transform:7-bit8-bit9-bit10-bit11-bit12-bit13-bit14-bita58116232464928185637127424b11022044088017603520704014081c148295590118123624723944718893d1683366721344268853761075321505e0000000015-bit16-bit17-bit18-bit19-bita148492969859396118791237583b2816256323112647225294450588c3778775573151146302292604584d4301186021172043344085688170e0000020-bit21-bit22-bit23-bit24-bita475165950330190066038013207602640b90117518023503604700720940014418800c120916924183374836675967335019346700d1376340275268055053601101072022021440e00000