A Colorimetric Measuring Instrument for Color Television Cameras
In the design or evaluation of color television cameras, one of the important considerations is measuring and assessing the reproducibility of colors. However, measurement of signals from the camera and calculations of colorimetric coordinates of reproduced colors is very troublesome. And quantitative assessment of its results also is very difficult because of psychological complexity in color recognition by the human eye. On the other hand, color picture quality needs to be improved in daily broadcasting by eliminating differences between cameras, programs and stations. Therefore, a colorimetric measuring instrument has been developed; it consists of a channel scanner, a picture element pointer, a sample holder, an A-D converter and a small computer. This instrument can automatically estimate the colorimetric distortion caused by a camera with reasonable precision, and quickly enough for the estimation to be applied to succeeding improvement tests. Details of the design of the instrument and the results of testing with cameras are given.
- Print ISSN
- 0361-4573
- Published
- 1971-04
- Content type
- Original Research
- DOI
- 10.5594/J08904