Method of determining exposure

Details Method of determining exposure Method of determining exposure

1992-05-21

1994-01-11

Mancuso, Joseph

Image analysis

Histogram processing

For setting a threshold

358527, 382 54, G06K 946

Patent

active

052789217

ABSTRACT:
An exposure determination method for determining exposure by extracting feature image data including person's face data. A color original image is divided into many picture elements, each picture element is resolved into three colors of red, green, and blue to photometrically measure them, a histogram of hue values is obtained in accordance with the data obtained through photometry, and the obtained histogram is divided into mountains. Picture elements are classified into groups corresponding to the divided mountains by judging which divided mountain each picture element of the color original image belongs to, the color original image is divided for each group, and at least one of the divided regions is selected to extract the data for the selected region as feature image data. Then, exposure for a copying material is determined in accordance with the extracted feature image data.

REFERENCES:
patent: 4472736 (1984-09-01), Ushio et al.
patent: 4574393 (1986-03-01), Blackwell et al.
patent: 4745465 (1988-05-01), Kwon
patent: 4847677 (1989-07-01), Mosic et al.
patent: 5119184 (1992-06-01), Hiratsuka et al.
patent: 5142593 (1992-08-01), Kasano
patent: 5177602 (1993-01-01), Fujimori

Affiliated with

Also associated with

Rating

Method of determining exposure does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of determining exposure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of determining exposure will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1637081