#Colorcross calibration higher qr pdf

238000005516 engineering process Methods 0.000 description 3.230000001131 transforming Effects 0.000 abstract description 4.230000003071 parasitic Effects 0.000 abstract description 7.239000003990 capacitor Substances 0.000 claims abstract description 60.

Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by Xian Microelectronics Technology Institute filed Critical Xian Microelectronics Technology Institute Priority to CN201710488915.5A priority Critical patent/CN107346975B/en Publication of CN107346975A publication Critical patent/CN107346975A/en Application granted granted Critical Publication of CN107346975B publication Critical patent/CN107346975B/en Status Active legal-status Critical Current Anticipated expiration legal-status Critical Links Original Assignee Xian Microelectronics Technology Institute Priority date (The priority date is an assumption and is not a legal conclusion. The test image consists of lines that are straight in fish-eye projection such that any distortion can be contributed to the lens of the viewer. The image is shown in fish-eye projection to closely simulate what the eye sees. The no-parallax point of the camera is set at 18 millimeters from the lens surface. Xian Microelectronics Technology Institute This image shows the right eye view of the ColorCross VR taken with a calibrated camera at a typical pupil-to-lens distance of 18 millimeters.

Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) ( en Inventor 李婷郭仲杰 Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Granted Application number CN201710488915.5A Other languages Chinese ( zh)

#Colorcross calibration higher qr pdf

Google Patents A kind of SAR types ADC high-precision calibration deviceĭownload PDF Info Publication number CN107346975A CN107346975A CN201710488915.5A CN201710488915A CN107346975A CN 107346975 A CN107346975 A CN 107346975A CN 201710488915 A CN201710488915 A CN 201710488915A CN 107346975 A CN107346975 A CN 107346975A Authority CN China Prior art keywords electric capacity calibration order capacitor array error Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents CN107346975A - A kind of SAR types ADC high-precision calibration device The method can overcome the influences of various environments on color information achieved by different digital cameras.CN107346975A - A kind of SAR types ADC high-precision calibration device Thus, by the proposed procedure, any designated digital camera could get its calibrated color information that is the same as that from a target digital camera, involving the forward colorimetric characterization modeling for the designated test camera and the inverse colorimetric characterization modeling for the target camera. The relationships between ( L *, a *, b *) values and digital inputs for individual digital cameras are described mathematically by the forward and inverse colorimetric characterization models, respectively. Afterwards, these tristimulus values XYZ are converted to the coordinates in the CIELAB color space using the white point of test lighting condition, i.e. In the process, the tristimulus values XYZ of the ColorChecker colors are obtained from their spectral reflectance and the spectral power distribution (SPD) of a lighting condition. This method is based on the accurate prediction of color information via colorimetric characterization modeling. In order to achieve the same color information for any digital cameras under the same environment, a color calibration method for adjusting the digital inputs between different digital cameras was presented and then verified by an experiment.