Piksel
Piksel (ingl. pixel, «Picture'S Element» soʻz birikmasidan qisqartma) — rastr grafikasida raqamli tasvirning eng kichik birligi.Piksel - bu bitta nuqta, yoki ekrandagi kichkina katakchalardan tashkil topgan ko'rinish, displeydagi nuqta. Piksel oʻz navbatida 3 ta rangdan iborat. Bu 3 ta rang: qizil, yashil va koʻk. Shu uchta rang ochlashib-toʻqlashib, bir necha million xil rangni ifoda eta oladi. Koʻpchilik S40 telefonlarda ekran o'lchami 240x320 bo'ladi. Bu degani, eniga 240ta piksel, bo'yiga 320ta piksel degani. Endi telefoniz ekraniga qarab, bir pikselni aniqlashga harakat qiling.. Megapiksel odatda rasmlar o'lchamini (bo'yi va eniga ketgan piksellar hajmini) anglatadi va buni rasm sifatiga hech qanaqa a'loqasi yo'q. 1MP bu bir million piksel demakdir. Aytaylik, 1000x1000 o'lchamdagi rasm bir megapiksel hisoblanadi. U rasm HD sifatli bo'lishi ham, yoki o'ta past sifatli bo'lishi ham mumkin. Misol uchun, 640x480 rasmni olaylik: agar 640ga 480ni koʻpaytirsak, 307 200 pikselni tashkil etarkan. Demak bu rasm 0.3MP demakdir. Yoki 2048×1536 rasm. Bunda 3 145 728 piksel mavjud. Demak, bu 3.2MP ekan! Xo'sh, 5MPlik kamera bilan 12MPlik kamera orasidagi farqni angladizmi? Farqi shu rasm o'lchamida va kamera olgan rasmni sifatida. Telefon kamerasi pikseli qancha yuqori bo'lsa rasm shuncha tiniq va sifatli bo'ladi sababi piksellar soni koʻp bo'lgani uchun ranglar aniq va yaqol, yorqin ko'rinadi. Piksel o'lchami va soni display sifatini aniqlaydi. Manitor ekranidagi har bir santimeterda.koʻproq piksellar yaxshiroq rasm hosil qiladi. Misol uchun, 2.1 MP rasm 2, 073,600 pikseldan iborat.
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