opto-electronic conversion function
relationship between the log of the input levels and the corresponding digital output levels for an opto-electronic digital image capture system
Note 1 to entry: If the input log exposure points are very finely spaced and the output noise is small compared to the quantization interval, the opto-electronic conversion function can have a step-like character. Such behaviour is an artefact of the quantization process and should be removed by using an appropriate smoothing algorithm or by fitting a smooth curve to the data.
Note 2 to entry: This entry was numbered 17-852 and 17-839 in CIE S 017:2011.