In television, 2:1 interlace is used, giving two vertical scans(fields) per frame; one field scans odd lines, and one field scans the even lines of the frame.
电视中使用2：1的交错率，即每帧分两场，垂直扫描两次，一场扫描奇数行，另一场扫描偶数行。
2
Aiming at the present condition of STB video post-processing, analyze the video post-processing algorithms which include sampling conversion, de-interlace and frame rate up-conversion.