Colorimetric Calibration of a Digital Camera
نویسندگان
چکیده
In this paper, we introduce a novel – physico-chemical – approach for calibration of a digital camera chip. This approach utilizes results of measurement of incident light spectra of calibration films of different levels of gray for construction of calibration curve (number of incident photons vs. image pixel intensity) for each camera pixel. We show spectral characteristics of such corrected digital raw image files (a primary camera signal) and demonstrate their suitability for next image processing and analysis.
منابع مشابه
Automatic colorimetric calibration of human wounds
BACKGROUND Recently, digital photography in medicine is considered an acceptable tool in many clinical domains, e.g. wound care. Although ever higher resolutions are available, reproducibility is still poor and visual comparison of images remains difficult. This is even more the case for measurements performed on such images (colour, area, etc.). This problem is often neglected and images are f...
متن کاملColorimetric Scanner Calibration for Textiles by Neural-Network
In this study, colorimetric calibration of scanner has been done via perceptron neural network with three or four layers by back propagation algorithm for colored polyester fabrics. The results obtained for random training samples are not satisfactory but application of selective training samples for L*a*b* or RGB leads to good results, with better results obtained for the L*a*b* method. On the...
متن کاملAdaptive Colorimetric Characterization of Camera for the Variation of White Balance
The RGB signals generated by different cameras are not equal for the same scene. Therefore, cameras are characterized based on a CIE standard colorimetric observer. One method of deriving a colorimetric characterization matrix between camera RGB output signals and CIE XYZ tristimulus values is least squares polynomial modeling. Yet, this involves tedious experiments to obtain a camera transfer ...
متن کاملColorimetric Scanner Calibration for Textiles by Neural-Network
In this study, colorimetric calibration of scanner has been done via perceptron neural network with three or four layers by back propagation algorithm for colored polyester fabrics. The results obtained for random training samples are not satisfactory but application of selective training samples for L*a*b* or RGB leads to good results, with better results obtained for the L*a*b* method. On the...
متن کاملExperiment on Precision of Camera Calibration of Non-metric Digital Cameras
Although many camera calibration methods for a non-metric digital camera have been proposed, there are few reports on the precision of calibration results. Therefore, we conducted a field experiment in order to examine the precision of calibration results of a non-metric digital camera. We adopted a calibration method using a set of calibration points distributed on the 2-D plane with no ground...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- CoRR
دوره abs/1708.04685 شماره
صفحات -
تاریخ انتشار 2017