公开(公告)号：CA2035671A1

公开(公告)日：1991-09-13

申请号：CA2035671

申请日：1991-02-05

Applicant: IBM

Inventor： FEDAK JOHN F ,  HICKE JEFFREY A ,  LASCELLES MARTIN C ,  SHERMAN STEPHEN P ,  WONG MICHAEL

IPC: G06F3/048 ,  G06F3/033 ,  G06F3/14 ,  G06F17/50 ,  G06T11/80 ,  G06F9/00

Abstract: B09-89-009 DYNAMIC SELECTIVE CORRELATION OF GRAPHIC ENTITIES System for editing displayed graphic images restricts highlighting only to selected images of a type on which editing is possible or designated. When an edit function is to be executed, a certain image type is specified for editing. A displayed image is selected using a cursor and the normal highlighting that occurs to identify the image being selected is deferred until the system determines that the type of image selected is the certain type specified for editing.

公开(公告)号：CA2036273A1

公开(公告)日：1991-09-13

申请号：CA2036273

申请日：1991-02-13

Applicant: IBM

Inventor： FEDAK JOHN F ,  HICKE JEFFREY A ,  LASCELLES MARTIN C ,  SHERMAN STEPHEN P ,  WONG MICHAEL

IPC: G06F3/153 ,  G06F17/50 ,  G06T3/00 ,  G06T17/00 ,  G06T17/40 ,  G09G5/00

Abstract: The invention relates to the correlation of two-dimensional displayed points of an axonometric projection with corresponding three-dimensional points of the projected shapes. A point on a display screen surface is selected and the screen coordinates of the points of the three-dimensional shape are found by converting successive points of the shape to two-dimensional screen equivalents. Comparing the converted coordinates to those of the selected point identifies the shape point corresponding to the selected shape.

公开(公告)号：CA1209244A

公开(公告)日：1986-08-05

申请号：CA441822

申请日：1983-11-24

Applicant: IBM

Inventor： FEDAK JOHN F ,  FINDLEY GERALD I ,  TORR TERRY A

IPC: H04N1/41 ,  G06K15/00 ,  G09G5/42 ,  H04N1/415 ,  H04N7/12

Abstract: Image or character data in the form of a rectangular array of binary 1s and 0s (bits) are divided into a plurality of segments, such as thirty-two by thirty-two bit segments or one bit by eight bit or byte segments. The image data is scanned for identifying all-zero segments (background) which are ignored and non-zero segments (foreground) which are transmitted or stored with offset and length (number of successive non-zero segments). The compacted image data is suitably indexed for facilitating image expansion using simple techniques. All compaction and decompaction machine operations are independent of bit-significant informational content of the segments. Presentation of the uncompacted data uses any printer or display type of device.