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公开(公告)号：DE2850117A1
公开(公告)日：1979-05-23
申请号：DE2850117
申请日：1978-11-18
Applicant: IBM
Abstract: There is disclosed a method and means for increasing the positional accuracy of operator controlled cursors engaged in the digitized encoding of graphic information such as line drawings. The method steps comprise those of digitizing the instantaneous contact position between the cursor and the data entry surface as reference coordinates; detecting any segment of a colored object upon the surface within a predetermined area about the cursor; ascertaining the location within the area of the centroid or the like of the detected segment; and digitizing said ascertained location as a displacement from the reference coordinates. Apparatus for practicing the method comprises an independently actuable cursor formed from a position encoder and an image scanner, the scanner generating a Boolean coded array of points counterpart to a preselected surface area. The scanned array is first buffered and then used to actuate an operator viewable LED display of the scanned array on one hand and said array is sent to a CPU on the other hand. In turn, the CPU calculates the coordinates of the centroid of that array area of contiguous points having the same designated Boolean (color) 0 or 1 value. Signals representing the calculated coordinates generated by the CPU then cause the LED display to differentially indicate the calculated centroid location to the operator such as by way of a flashing display element.
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Patent Agency Ranking
公开(公告)号：DE3787865D1
公开(公告)日：1993-11-25
申请号：DE3787865
申请日：1987-08-28
Applicant: IBM
Inventor： CASEY RICHARD GEORGE , KING JAMES CORNELIUS
Abstract: A method of facsimile transmission which utilizes pattern matching, whereby the appearance of the transmitted facsimile and the compression performance are enhanced. The appearance of the respective prototype symbols is enhanced by using the average of images that match the same pattern as the prototype. Compression performance is enhanced by incorporating white space parameters into prototypes thereby eliminating the need to send positional identification when each character ID is sent.
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公开(公告)号：DE68925312T2
公开(公告)日：1996-07-11
申请号：DE68925312
申请日：1989-07-12
Applicant: IBM
Inventor： CASEY RICHARD GEORGE , MOHIUDDIN KOTTAPPURAM MOHAMEDA
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4.发明专利
公开(公告)号：AU3829278A
公开(公告)日：1980-01-31
申请号：AU3829278
申请日：1978-07-24
Applicant: IBM
Abstract: There is disclosed a method and means for increasing the positional accuracy of operator controlled cursors engaged in the digitized encoding of graphic information such as line drawings. The method steps comprise those of digitizing the instantaneous contact position between the cursor and the data entry surface as reference coordinates; detecting any segment of a colored object upon the surface within a predetermined area about the cursor; ascertaining the location within the area of the centroid or the like of the detected segment; and digitizing said ascertained location as a displacement from the reference coordinates. Apparatus for practicing the method comprises an independently actuable cursor formed from a position encoder and an image scanner, the scanner generating a Boolean coded array of points counterpart to a preselected surface area. The scanned array is first buffered and then used to actuate an operator viewable LED display of the scanned array on one hand and said array is sent to a CPU on the other hand. In turn, the CPU calculates the coordinates of the centroid of that array area of contiguous points having the same designated Boolean (color) 0 or 1 value. Signals representing the calculated coordinates generated by the CPU then cause the LED display to differentially indicate the calculated centroid location to the operator such as by way of a flashing display element.
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公开(公告)号：DE68925312D1
公开(公告)日：1996-02-15
申请号：DE68925312
申请日：1989-07-12
Applicant: IBM
Inventor： CASEY RICHARD GEORGE , MOHIUDDIN KOTTAPPURAM MOHAMEDA
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公开(公告)号：DE3787865T2
公开(公告)日：1994-05-05
申请号：DE3787865
申请日：1987-08-28
Applicant: IBM
Inventor： CASEY RICHARD GEORGE , KING JAMES CORNELIUS
Abstract: A method of facsimile transmission which utilizes pattern matching, whereby the appearance of the transmitted facsimile and the compression performance are enhanced. The appearance of the respective prototype symbols is enhanced by using the average of images that match the same pattern as the prototype. Compression performance is enhanced by incorporating white space parameters into prototypes thereby eliminating the need to send positional identification when each character ID is sent.
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