動態解析度測試卡簡介

　　動態解析度測試卡是專門為檢測TV攝像機解析度特性以及TV傳輸系統“串色”干擾而研發的▩☁│。解析度測試卡測試卡由一個波帶片分佈滿整個影象區域☁▩☁，其中影象上的環以線性增加的空間頻率向外擴充套件▩☁│。網格線標誌著垂直和水平方向上的空間頻率☁▩☁，中心位置2MHz☁▩☁，邊緣位置1MHz▩☁│。影象上水平方向邊緣的空間頻率可以達到8MHz☁▩☁，垂直方向邊緣的空間頻率達到6MHz▩☁│。測試卡的角落的空間頻率為10MHz▩☁│。

　　動態解析度測試卡用於確定的TV攝像機和TV傳輸系統的以下特徵

　　水平☁▩☁，垂直和對角方向的解析度

　　解析度取決於掃描的位置

　　水平和垂直光圈校正效果

　　照相機的掃描光束的象散(閥攝像機)

　　帶片和電視光柵對應彩色映象管蔭罩結構之間干涉的影響▩☁│。

　　解析度測試卡PAL編碼的效果(例如“串色”)在水平和垂直方向上照相機(或測試卡)運動過程中反應•·：動態解析度☁▩☁，時間干涉干擾

　　該動態解析度測試卡特別適合與電視訊號濾波器的多維測量裝置(水平◕✘、垂直以及如果可能在時間上)一同使用▩☁│。這些裝置可以是TV攝像機鏡頭光圈矯正器☁▩☁，也可以是標準PAL解碼器(帶線延遲)和梳妝濾波PAL解碼器▩☁│。帶片也可以被使用在MAC系統(根據色彩線序傳輸)的預處理和預過濾效果的測定▩☁│。動態解析度測試卡已經被證實可以可靠的測量CCD攝像機▩☁│。

　　Introduction to Dynamic Resolution Test Cards

　　Dynamic resolution test card is specifically designed to detect TV camera resolution characteristics and TV transmission system "string color" Resolution test card interference and research and development. The test card is distributed over a whole region by a band, where the ring on the image extends outwardly with a linearly increasing spatial frequency. The grid line marks the spatial frequency in the vertical and horizontal directions, the center position is 2MHz, and the edge position is 1MHz. The spatial frequency of the horizontal edge of the image can reach 8MHz, and the spatial frequency of the vertical edge is 6MHz. The corner frequency of the test card is 10MHz.

　　The dynamic resolution test card is used to determine the following characteristics of the TV camera and the TV transmission system

　　Horizontal, vertical and diagonal directions

　　The resolution depends on the position of the scan

　　Resolution test cardHorizontal and vertical aperture correction effects

　　The astigmatism of the camera's scanning beam (the valve camera)

　　The effect of band and TV gratings on the interference between the mask structure of the color picture tube.

　　PAL encoding effects (eg "string color") in the horizontal and vertical directions of the camera (or test card) during the movement of the reaction: dynamic resolution, time interference interference

　　The dynamic resolution test card is particularly suitable for use with multidimensional measuring devices (horizontal, vertical,Resolution test card and possibly in time) of a television signal filter. These devices can be TV camera lens irisizers, also can be standard PAL decoder (with line delay) and dressing filter PAL decoder. The tape can also be used in the determination of the preprocessing and pre-filtering effects of the MAC system (according to color line order). The dynamic resolution test card has been proven to be reliable for measuring CCD cameras.