A METHOD OF REAL TIME HISTOGRAM FORMATION
Original Publication Date: 1993-Feb-28
Included in the Prior Art Database: 2004-Apr-06
Xerox Disclosure Journal
The concept described here is a real time hardware method which can be utilized by an imaging system scanner for forming a histogram of video (i-e., grey) data. The histogram thus created could then be used by the scanner to optimize the subsequent scan to a particular document. This system is unique in that a full resolution histogram of the video data is created during a prescan of the document without the aid of software processing. Other scanning systems which attempt to perform this function typically use simple peak detector circuits, either analog or digital, and are therefore extremely sensitive to noise.