TE279解析度測試圖卡是為快速評估（主要是視覺評估）4K超高畫質電視相機的傳輸特性而設計的↟◕✘✘│。
4K(UHD TV)解析度測試圖卡簡介
TE279測試卡是以灰色為背景（D=0.75;透射率=18%）│·✘，在中間有個白色的大圓圈│·✘，裡面分佈了灰階條和解析度楔形線條↟◕✘✘│。在中間圓圈的兩邊│·✘，排列了四個帶有解析度楔形線條的小圓圈↟◕✘✘│。
16:9的格式是由位於水平和豎直中間線上的四個箭頭所標示的↟◕✘✘│。另外│·✘，在圖片的上部和底部邊緣處│·✘，四個箭頭靠近圓圈的位置標示了4:3的格式↟◕✘✘│。
在白色圓圈的四個方向上各有一個11階灰階條↟◕✘✘│。這些灰階條從D=0.15到D=1.65以同等的線性距離增長│·✘，用於測試相機半色調再現性↟◕✘✘│。然而由於周圍的白色區域│·✘，測試結果會更有質量↟◕✘✘│。
解析度測試卡上的所有頻率值都用cph（每單位像高的線數）表示↟◕✘✘│。在中央大圓圈裡│·✘，水平及豎直地排列了三條不同頻率的解析度楔形線條↟◕✘✘│。它們的頻率分別是從200到500,400到1000,800到2000cph↟◕✘✘│。另外│·✘，在45度角交叉的兩條解析度楔形線條產生頻率為400到1000cph↟◕✘✘│。
在解析度測試卡的正中心及左右兩側│·✘，有四個線光柵方格│·✘，傾斜的角度分別 為0°│·✘，45°│·✘，90°│·✘，135°↟◕✘✘│。它們產生了一個400cph的頻率↟◕✘✘│。那些傾斜角度為45°及135°的線光柵方格在水平及豎直方向上（由於他們的傾向）生成了不同的頻率↟◕✘✘│。
中央大圓外面的八個小圓分別安排用於16:9 和4:3格式↟◕✘✘│。其中較大的圓有十字形解析度楔形線條↟◕✘✘│。這些圓環用來標示水平和豎直方向上的解析度│·✘，同時也可以用於檢測幾何失真↟◕✘✘│。分別可顯示400│·✘，600│·✘，800│·✘，1200及1600cph的解析度↟◕✘✘│。位於角落的四個圓有更長的解析度楔形線條│·✘，它們的交叉點是640cph│·✘，並且標有從400到1600cph的刻度↟◕✘✘│。
在解析度測試卡的中間│·✘，白色和灰色區域內排列有七條杆元圖│·✘，長度依次為1（=像高的一半）│·✘，2,4,8,16,32及64cph↟◕✘✘│。從左到右的豎直灰階條那有5個額外的短條│·✘，範圍從100到900及從200到1800cph↟◕✘✘│。
TE279 resolution test card is designed for rapid evaluation (mainly visual assessment) 4K ultra-high definition TV camera transmission characteristics.
4K (UHD TV) resolution test card
TE279 test card is gray background (D = 0.75; transmittance = 18%), in the middle there is a large white circle,
Resolution test cardwhich distributed gray scale and resolution wedge lines. On both sides of the middle circle, four small circles with resolution wedge lines are arranged.
The 16: 9 format is indicated by four arrows on the horizontal and vertical middle lines. Also, at the top and bottom edges of the picture, the four arrows near the circle indicate the 4: 3 format.
In the four directions of the white circle each has an 11-order grayscale. These gray bars grow from D = 0.15 to D = 1.65 at the same linear distance for testing camera halftone reproducibility. However, due to the surrounding white area, the test results will be more quality.
Resolution test card values on the test card are represented by cph (the number of lines per unit high). In the central circle, three different frequency resolution wedge lines are arranged horizontally and vertically. Their frequencies are from 200 to 500, 400 to 1000,800 to 2000 cph, respectively. In addition, the two resolution wedge lines at the 45 degree angle intersect the frequency of 400 to 1000 cph.
In the center of the resolution test card and the left and right sides, there are four line grating grid, tilt angle of 0 °, 45 °, 90 °, 135 °. They produced a frequency of 400cph.
Resolution test cardThe line gratings with tilt angles of 45 ° and 135 ° produce different frequencies in the horizontal and vertical directions (due to their inclination).
The eight small circles outside the central circle are arranged for 16: 9 and 4: 3 formats, respectively. Where the larger circle has a cross-shaped wedge-shaped line. These rings are used to indicate the resolution in the horizontal and vertical directions, and can also be used to detect geometric distortions. Respectively, can display 400,600,800,1200 and 1600cph resolution. The four circles in the corner have longer resolution wedge lines, their intersection is 640cph, and marked with a scale from 400 to 1600cph.
There are seven bar graphs in the middle of the resolution test card, with a length of 1 (= half of the height), 2,4,8,16,32 and 64cph. From left to right vertical gray bars there are 5 extra short strips ranging from 100 to 900 and from 200 to 1800cph.
Resolution test card TE279
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