Makanzura anobudisazve upenyu hwako munyika ye digital ...
Hungu, kune dzakawanda zvekuongorora, asi vazhinji vavo (kunze kwekuti, zvichida, matanho emakambani anoshandiswa mukudhinda mabhizimusi) data "sei" -kuve magwaro epafesti, mabhizinesi mafirimu, kana mapikicha, kusanganisira mafirimu, mashizha, mashizha , uye zvikanganiso-nenzira imwecheteyo, iyo inyaya yenyaya ino. Kungoshandiswa kwe scanner kunotora sei peji pepaji, kubereka zvayo, uye zvino kutumira dhidhi iyo kumakombiyuta faira iwe neni zvingaita nayo sezvatinofarira?
Mhosva-Yakabatana Dhidhiyo (CCD) Array
Kunyange zvazvo scanji yakaumbwa nezvikamu zvakasiyana-siyana, zvakadai semirazi, lenzi, motors, nezvimwewo. Pamusoro pezvinyorwa zvemazuva ano, kunyange zvakadaro, nheyo yepamusoro ndiyo inowanikwa-yakabatanidzwa (CCD) array. Chikwata che didi-light-sensitive iyo inoshandura photons (chiedza) kumagetsi, kana mishonga yemagetsi, idzi diode dzinozivikanwa kakawanda se photosites .
Photosites ndeyechiedza kune chiedza; chinopenya chiedza icho chikuru chikuru chemagetsi. Zvichienderana nemuenzaniso we scanner, chinyorwa chakacherechedza kana chibvumirano chinowana nzira yeCCD yakawanda kuburikidza nemakwikwi lenses, filters, uye mirati. Izvo zvikamu zvinoumba musoro wecheka . Munguva yekutsvaga, musoro wecheka unopfuurirwa pane chinangwa (chinhu chinoshandiswa).
Zvichienderana ne-scanner, dzimwe dzisina kuroorwa-imwe uye imwe inotatu-inopfuura, izvo zvinoreva kuti vanotora chinhu chinotaridzwa mune imwe kana kupfuura imwe, maererano. Pane imwe nhatu-pass scanner, pfupa imwe neimwe inotakura rumwe ruvara (ruvara, ruvara, ruvara rwebhuruu), uye purogiramu yacho inoshandisazve mitatu yeRGB mifananidzo, kudzorera chifananidzo chepakutanga.
Mazuva ano, vazhinji vanopenya vari-single-pass, uye lens iri kuita chaiyo kuparadzanisa mitambo mitatu yemirasi, kunze kwekushandiswa kwemushandisi.
Bata Image Sensor
Imwe, iyo inodhura yakawanda inodhura teknolojia yakawanda yekuwana imwe nzvimbo munguva pfupi yapfuura inosangana nechitinha chemufananidzo (CIS). CIS inotora nzvimbo yeCCD array, ine urongwa hwezvioni, mafiritsi, mwenje, uye lenzi, nemitsara yakatsvuka, yakasvibirira, uye yebhuruu (RGB) chiedza chinonzi emitting diodes (LEDs). Pano, mufananidzo wemagetsi unogadzirwa nemasero mazana matatu kusvika ku600 anowedzera hupamhi hwependi kana kuti kupenya. Kunyange zvazvo mufananidzo uri kuongororwa, ma LED anobatanidza kupa chiedza chakachena, chichijekesa chifananidzo, icho zvino chinotorwa ne sensor.
CIS scanners hazviwanzopa huwandu hwakafanana hwehutano nekugadziriswa kunoendeswa neCCD-based machine, asi izvo zvekare zvinowanzoita zvishoma, zvishoma, uye zvinodhura.
Kugadzirisa uye Kurara Kwemavara
Izvisarudzo zvipi zvaunofanira kuongorora pane zvinoenderana neunotarisira kushandisa chifananidzo. Makombiyuta anotarisa, mahwendefa, uye ma-smartphone anonyatsokwanisa kuratidza mazano kunze kweanenge 72 mazai ne inch (dpi), nevanotarisa HD vachitsigira 96dpi. Chinhu bedzi chinoitika kana iwe uchiongorora mufananidzo pane zvakasarudzwa kupfuura zvinogona kuratidzirwa pazviri, data yakanyanyisa inodzingwa kunze, iyo, zvechokwadi, inotora nguva.
Mifananidzo iri mumabhurocha enyu ekupedzisira uye mamwe masvikiro, kune rumwe rutivi, ndeye nyaya yakasiyana. Nokuda kwemigumisiro yakanakisisa, iwe unofanirwa kuaongorora nguva dzose pa 300dpi, uye yakakwirira, yakareba kwazvo, kana zvichibvira-kungoitika kana iwe uchida kuwedzera chimiro panguva yekugadzirisa.
Kuyerera kwemavara kunotsanangura nhamba yemirau mufananidzo chaiwo (kana kuti scan) ine. Mikana iyi ndeye 8-bit, 16-bit, 24-bit, 36-bit, 48-bit, uye 64-bit, neyakambotanga, 8-bit, inotsigira 256 mavara kana shades ye gray uye 64-bit mabhiriyoni emabhiriyoni e mavara-kure kwazvo kupfuura ziso revanhu rinogona kunzwisisa.
Zviri pachena, mukati mekufunga, zvakasarudzwa uye zvakadzika kumera zvakadzika zvinowedzera unhu hwe scan, nechikonzero, hongu. Mavara, unhu, uye tsanangudzo dzinofanira kuvapo usati watarisa. Hazvina mhosva kuti yakanaka sei scanner yako, inogona kuita zvishamiso.