Ka helu helu helu ʻo Pixel
He aha ka nuʻa o nā pika
ʻO nā pika i kēlā me kēia ʻīniha (PPI) kahi ana o ka pixel density (hoʻonā) o nā hāmeʻa i nā ʻano like ʻole: ʻo ka maʻamau ka hōʻike ʻana i nā kamepiula, nā kiʻina kiʻi, a me nā kiʻi kiʻi paʻi kiʻi uila. ʻO ka PPI o kahi hōʻike kamepiula e pili ana i ka nui o ka hōʻike i nā ʻīniha a me ka helu o nā pika i nā ʻaoʻao papamoe a me nā kiko.
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ʻO nā mea hou aʻe ma ka nui o ka pixel
Inā makemake ʻoe e helu i ka nui o ka pika o kāu pakuhi, pono ʻoe e ʻike: ka helu kiko a me ka pika kiko a me ka nui o ka maka diagonal. A laila e hoʻopili i kēia hana, a i ʻole hoʻohana i kā mākou calculator;)
\(
d_p = \sqrt{w^2 + h^2}
\)
\(
PPI = \dfrac{d_p}{d_i} \ \
\)
where| \( w \) | ka hoʻonā ākea i nā pika |
| \( h \) | ka hoʻonā kiʻekiʻe ma nā pika |
| \( d_p \) | he hoʻonā diagonal i nā pika |
| \( d_i \) | he diagonal ka nui i nā ʻīniha (ʻo kēia ka helu i hoʻolaha ʻia e like me ka nui o ka hōʻike) |
Inā makemake ʻoe e ʻike hou aku, e nānā i kēia wikiō Linus Kōkua maikaʻi loa ma lalo nei.