GB/T 3175.4-1987 Transmission skin color test chart

This standard is applicable to the calibration of the color consistency of each channel of a color television camera. It can also be used to balance the television camera channel itself with the help of some instruments. GB/T 3175.4-1987 Transmissive skin color test chart GB/T3175.4-1987 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
GB/T3175.4—1987
Transparency Fleshtone Test Chart
Transparency Fleshtone
test card
Published on March 12, 1987
National Bureau of Standards
Implemented on November 1, 1987
National Standard of the People's Republic of China
Transparency Fleshtone Test Chart
Transparency Fleshtone
test cardbZxz.net
621.397.012
GB/T3175.4—1987
This standard is applicable to the calibration of the color consistency of each channel of a color television camera, and can also be used to balance the television camera channel itself with the help of some instruments. 1 Skin color test chart*
The standard pattern is as shown below.
2 Basic parameters
This standard is tested under the light source of standard illuminant D65. 2.1 Skin color chromaticity value
2.1.1 Color coordinates:
2=0.36±0.01
3=0.34±0.01
2.1.2 Dominant wavelength: dλ=588±3nm.
*This figure is for illustration only.
Approved by the National Bureau of Standards on March 12, 1987
Implemented on November 1, 1987
2.1.3 Transmittance: 18%.
2.1.4 Purity: 24%.
GB/T3175.4—1987
2.2 After the cheek skin color is photographed by the camera, the phase angle presented on the TV vector oscilloscope is 117°±1°3 Test pattern geometric dimensions
3.1 Skin color test pattern size: 240mm×180mm. 3.2 The size of the finished product is the size with the frame. 3.2.1 The size of the large light box is 360mm×280mm. 3.2.2 The size of the small light box is 260mm×200mm. 4 Working environment
4.1 Working temperature: -10~40℃.
4.2 Relative humidity: 40%~80%.
4.3 Light box surface illumination: 15001x or more. 4.4 Light box surface color temperature: 3200±10K. 5 Packaging and Storage
5.1 After use, the test chart should be placed in a box to prevent dust, moisture and shock. Avoid long-term exposure as much as possible.
Additional Notes:
This standard was proposed by the Ministry of Radio, Film and Television of the People's Republic of China. This standard was drafted by the Institute of Broadcasting Science of the Ministry of Radio, Film and Television, the Institute of Psychology of the Chinese Academy of Sciences, and China Photo Agency. The main drafters of this standard are Lu Yao, Lin Zhongxian, Sun Xiuru, and Li Wenming. 2
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