三恩時SkypeTM/Lync視頻質(zhì)量MTF檢測測試卡

圖像測試卡

SFRplus圖：40"X60"，5×7，磨砂，雙色

SFRplus圖：24"X34"，5×7，磨砂，雙色

圓點圖案測試圖表-中-大（15點高）

圓點圖案測試圖表-XLL（15點高）

愛色麗色卡經(jīng)典圖

高精度的8x10"膠片36補(bǔ)丁動態(tài)范圍測試圖

ISO-14524數(shù)碼相機(jī)對比圖ST-52-RM

溢出硬幣（枯葉）測試圖-中 -啞光3：1單

溢出硬幣（枯葉）測試圖-大啞光3：1單 

請注意，在2013年Skype的規(guī)范進(jìn)行了修訂。在這次修訂的測試圖的表面類型已從亞光/光澤改為磨砂，作為一項較少鏡面反射的措施。

圖卡是有黑色和白色組成的，其中一個聚焦星、20塊級別卡以及包含10:1和2:1對比度。使用圖卡太小會導(dǎo)致高分辨率傳感器測量MTF攝像系統(tǒng)的圖像MFT退化。

Please note that in 2013, the Skype Specification was revised. In this revision the surface type of the test charts has been changed from Semi-Gloss/Luster to Matte, as a measure to reduce specular reflection.
Charts are black and white, including a focus star, 20 patch step chart, and include 10:1 as well as 2:1 contrast ratios.
As shown on our blog, these charts are first mentioned in Version 5.0 of the Skype™ Hardware Certification Specification.
Skype™ is a registered trademark of Skype Limited.
Lighting Setup for ITDR-36
As written in the specification, "This chart needs an uniform light emitting surface below the chart, such as a dedicated light box." For this purpose we recommend the GL-16E Lightbox Viewer. This lightbox provides even illumination and features a high frequency ballast to eliminate flicker.
Ink Jet Chart Resolution

This chart, and all our ink jet printed charts have an approximate MTF50 of 5 cycles/mm.  Please keep this in mind when choosing the size of chart.  Using a chart that is too small with a high-resolution sensor can result in the MTF of the chart degrading the measured MTF of the camera system.

三恩時SkypeTM/Lync視頻質(zhì)量MTF檢測測試卡