Subjective Vs Objective Image Quality

Image quality demands have been investigated for different applications of stereoscopic evaluation. For that purpose, the quality of image pairs was judged by experienced stereo operators in subjective sc ales for contrast, sharpness, granularity, interpretability and overall quality. The judgment was made in real working situations with the images oriented in stereo instruments. The result showed different demands for different applications. It is being used for deriving frequency weight functions for integration of modulation transfer functions into image quality marks. The frequency weight functions will be a useful basis for further investigations into the dependence of subjective quality upon the frequency content of images.