Koppel & Jacobs
Method of reading an image recorded in a photographic film tone characteristic correcting method in reproducing an image recorded in a photographic film
 A frame of photographic film is optoelectronically scanned after development to produce an electronic image which is analayzed to determine the exposure and development conditions of the film. Tone conversion signals are generated in accordance with the analyzed conditions to convert the tone characteristics of the electronic image to optimal values and thereby compensate for non-standard exposure and development. The electronic image of the entire frame, or alternatively only a part of the electronic image corresponding to an unexposed area of the frame, may be used to determine the development conditions. 
Victor Company of Japan, Ltd.
H
H04N
inventional
Shigeaki Hiroshi Ichiro Hiromitsu Takashi Tadayoshi
Tada Nishiyama Shishido Kurokawa Kuriyama Miyoshi