Ko te tukanga o te kōpeketanga raraunga ki te whakaiti i tona rōrahi

I tčnei wā, whakaaro nui e pā ana ki te āhua o te tukanga kōpeketanga raraunga i roto i te tikanga ki te whakaora mokowā kōpae mārō, he reira tetahi o te whakamahi whai hua te nuinga o te wāhi nui i roto i tetahi pūrere rokiroki maha iwi. Tino maha, ngā kaiwhakamahi matatau nei e fehangahangai ki te kore o te wāhi noa i runga i tou puku, he tika te reira ki te tango i tetahi raraunga i roto i te whakamātau ki te wewete i te wahi e tika ana, i te maha te whakamahi i ngā kaiwhakamahi atu matatau kōpeketanga raraunga i roto i te tikanga ki te whakaiti i tona rōrahi.

Heoi, e kore e maha noa mohio te ingoa o te tukanga o te kōpeketanga o te mōhiohio, e kore ki te whakahua he aha hātepe e whakamahia, me e homai te tono o ia o ratou.

Ahakoa ki te kōpeke raraunga?

He nui nui ki te rā kōpeketanga Raraunga, a he mea e tika ana mo tetahi kaiwhakamahi. O te akoranga, ka taea e enei tata tetahi hoko rokiroki raraunga matatau, whakarato te taea o te whakamahi i te nui makona nui o wāhi noa, ka rite rawa ki tiketike-tere takere pāpāho raraunga.

Heoi, me tika matau ai ko e te rōrahi o te raraunga e me tuku faarahi hoki i runga i te wā. A, ki te tika kotahi tekau nga tau ki muri, i whakaaro te paerewa mō te kiriata tikanga ki te hei i te rōrahi o 700MB, nga kiriata rā, i hanga i roto i te HD-kounga, kia whai i te rōrahi rite ki te maha tekau o gigabytes, e kore ki te whakahua te nui wāhi nohoia e-kounga teitei pikitia i roto i te hōputu Blu-ray.

A, no te he e tika ana kōpeketanga raraunga?

O te akoranga, e kore e kotahi e mahara e ka kawea i te tukanga kōpeketanga raraunga koutou maha painga, engari i reira he he tetahi maha o ngā āhuatanga i roto i nei e tino whai hua, a tae noa tika etahi tikanga kōpeketanga raraunga:

• Whakawhiti o etahi tuhinga i roto i ī-mēra. Ko rawa pono hoki aua āhuatanga tenei ina e hiahia ana koe ki te kawe i ngā mōhiohio i runga i te tauine nui, mā te whakamahi i te momo o ngā pūrere pūkoro.
• E mea pinepine te tukanga kōpeketanga raraunga i roto i te tikanga ki te whakaiti i te wāhi nohoia e whakamahia ai i roto i te whakaputanga o etahi raraunga i runga i ngā pae e rapua e anake hōkaiipurangi;
• Whakaora wāhi i runga i tou puku mārō i roto i te kaupapa e kore e taea ki te whakakapi tāpiri ranei nga rauhanga rokiroki hou. I roto i ngā, i te āhuatanga tino noa ko e kore e ka i reira e etahi whāititanga i roto i te pūtea e wātea ana, engari i reira nui te mokowā kōpae free.

O te akoranga, i roto i te tua ki te runga ake, i reira e he rota o ngā āhuatanga rerekē e ai rapu utu i te tukanga kōpeketanga raraunga i roto i te tikanga ki te whakaiti i tona rōrahi, engari ko te nuinga noa te i tenei ra enei.

Me pehea ahau e taea e kōpeke nga raraunga?

I teie mahana, i reira e he momo o tikanga o kōpeketanga raraunga, engari kua wehea ratou ki e rua ngā rōpū matua - tenei kōpeketanga ki etahi parekura, me te Ngarokore kōpeketanga.

He hāngai Whakamahi o te rōpū muri o tikanga ina kia whakahokia nga raraunga ki pū tino nui, ki runga ki te kotahi moka. he hāngai anake i roto i te take tenei huarahi ka whakamana te te kōpeketanga i te tuhinga kuputuhi.

E tano ia tapao e i roto i te tahi mau āhuatanga i reira he kore hiahia i roto i te hangaia anō tika te nuinga o ngā raraunga kōpeke pera whakarato mo te whakamahi o taua hātepe, i roto i nei kawea te kōpeketanga kōpae raraunga i roto i te etahi parekura. Ko te painga o te kōpeketanga rōhi ko e tenei hangarau, ko te nui ake ngāwari ki te whakatinana, me te whakarato i te faito teitei roa taea o te pūranga.

kōpeketanga rōhi

Hātepe mō te kōpeketanga raraunga ki te parekura whakarato te tikanga o te nui kōpeketanga pai i te pupuri i ngā mōhiohio o te kounga rawaka. I roto i te nuinga o te wā, kawea te whakamahi o taua hātepe te atu ki kōpeke te raraunga tairitenga, pērā i nga mea katoa o whakapakoko oro ranei. I roto i taua āhuatanga, kia te kōnae tangohia rerekē tino i te mōhiohio taketake, engari ki te kanohi taringa ranei tangata e tata indistinguishable.

Ngarokore

hātepe Kōpeketanga mōhiohio Ngarokore whakarato te whakaora raraunga tika te nuinga, kaitouo tetahi mate o ngā kōnae kōpeke. Heoi, he mea e tika ana ki te mahino tika te meka e i roto i tenei take e kore e whakaratohia e rite kōpeketanga kōnae whai hua.

tikanga Universal

I tua atu, i reira he he tetahi maha o ngā tikanga ao, i hanga te tukanga kōpeketanga raraunga whai hua ki te whakaiti i te wāhi nohoia e te reira. I roto i te whānui, ka taea e koe te tīpako i katoa hangarau matua e toru:

• Tahuri awa. I roto i tenei take, te whakaahuatanga o te raraunga kōpeke taumai hou i roto i ngā kōnae kua tukatuka, te tātai te kore kawea i roto i tetahi tūponotanga, me encodes nga tohu i runga i te pūtake o te anake aua kōnae e kua waiho i raro ki etahi maimoatanga.
• kōpeketanga Statistical. Tenei tukanga kōpeketanga raraunga ki te whakaiti i te reira noho tohaina mokowā kōpae ki rua i kāwai-roto - tikanga urutau me te modular. whakarato kōwhiringa urutau te tātaitanga o te tūponotanga mō ngā kōnae hou i runga i te kōrero kei te tukatuka e i roto i te tukanga waehere. I roto i ngā, kia hoki ngā taua tikanga rerekē o ngā hātepe urutau Shannon-Fano me Huffman. Poraka hātepe whakarato vyschityvanie motuhake ia kōwae kōrero aru mā te tāpiri ki te poraka kōpeke.
• tahuringa Unit. Kei te wehea mōhiohio Taumai ki te maha poraka, a muri puta huringa wāhi. I roto i tenei take, kia tuhia te reira e etahi tikanga, rawa te hunga e kua hāngai i runga i te transposition o te maha wae, kia te mutunga arahi ki te whakaiti nui i roto i te rōrahi o ngā raraunga kōpeke. Heoi, e hiahia ana koe ki te tika matau e muri i tenei maimoatanga, te mutunga i reira ko te whakapai ake nui i roto i te hanganga raraunga, ai te whakahaere o te kōpeketanga muri i te tahi atu hātepe whakatinana nui atu hohoro a ngāwari.

Kōpeketanga ka tārua

Ko tētahi o nga wāhanga tino nui o te pūrua ko te whakaaro i ai ki te neke i te mōhiohio kaiwhakamahi e hiahiatia ana. Ko te atu raraunga ka neke koe, te atu rōrahi te pūrere e hiahia ana koe ki te whakamahi i. Heoi, ki te whai koe e tukanga kōpeketanga raraunga kia kawea ki waho, ka te raruraru o te kore o te wāhi, ko te pea ki te noho hāngai hoki koutou.

He aha te mahi i te reira?

Ko te taea o te kōpeketanga raraunga i roto i pūrua tino e taea te whakaiti i te wa ka waiho te reira e tika ana ki te tārua i te kōnae e tika ana, me i te wa taua ki te whakatutuki i penapena tōtika o te wāhi noa i runga i te puku. I roto i te mau parau te tahi atu, ka whakamahi i ngā mōhiohio kōpeketanga ka tāruatia ki te nui ake kiato, me te nohopuku, a ka taea e koe te whakaora i tō moni me pūtea, i hiahiatia nei ki te hoko rōrahi rokiroki atu. I roto i te tahi atu mea, e mau ana i roto i kōpeketanga raraunga, tapahia koe ano te wa e hiahiatia ana mō te transportation o ngā raraunga katoa i runga i te tūmau, ranei tārua ratou i runga i te whatunga.

Ka taea te whakamana kōpeketanga raraunga mō te tārua i roto i te kotahi, neke atu rānei ngā kōnae - i roto i tenei take, ka whakawhirinaki nga mea katoa i runga i te aha te huru o te hōtaka e koe te whakamahi i me he aha ngā mōhiohio kōpeke te.

A, no te kōwhiri i te taputapu, kia tino ki te titiro i te whānuitanga ki e taea te hōtaka kōpeke te raraunga kua tīpakohia e koe. Tei te reira i runga i te momo o te mōhiohio, ai te tōtika kōpeketanga o tuhinga kuputuhi e taea e neke atu i te 90%, i pikitia kōpeketanga ka whai hua hoki e kore neke atu i te 5%.