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Class Information
Number: 382/199
Name: Image analysis > Pattern recognition > Feature extraction > Local or regional features > Pattern boundary and edge measurements
Description: Subject matter wherein local features are extracted specifically in areas of transition between the pattern* and the background, thereby producing so-called transition, edge, or boundary signals.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 5231674 |
Eye tracking method and apparatus |
Jul. 27, 1993 |
| 5231695 |
Generalized clipping in an extended frame buffer |
Jul. 27, 1993 |
| 5224175 |
Method for analyzing a body tissue ultrasound image |
Jun. 29, 1993 |
| 5214720 |
Image processing method for the detection of the horizon and device for the implementation thereof |
May. 25, 1993 |
| 5210799 |
System and method for ranking and extracting salient contours for target recognition |
May. 11, 1993 |
| 5204920 |
Method and apparatus for region and texture coding |
Apr. 20, 1993 |
| 5199082 |
Method of detecting an amplitude transient in a field of elements having a multivalent amplitude distribution, device suitable for performing the method, and video system including the device |
Mar. 30, 1993 |
| 5197108 |
Smoothing method and apparatus for smoothing contour of character |
Mar. 23, 1993 |
| 5185812 |
Optical pattern inspection system |
Feb. 9, 1993 |
| 5173946 |
Corner-based image matching |
Dec. 22, 1992 |
| 5170440 |
Perceptual grouping by multiple hypothesis probabilistic data association |
Dec. 8, 1992 |
| 5168529 |
Confirmed boundary pattern matching |
Dec. 1, 1992 |
| 5168530 |
Confirmed boundary pattern matching |
Dec. 1, 1992 |
| 5157735 |
Chipping detection system and method |
Oct. 20, 1992 |
| 5151952 |
Character recognition apparatus which obtains distance ratios between edges in a character for identification |
Sep. 29, 1992 |
| 5150433 |
Histogram/variance mechanism for detecting presence of an edge within block of image data |
Sep. 22, 1992 |
| 5144682 |
Method and an apparatus for isolating an area corresponding to a character or word |
Sep. 1, 1992 |
| 5144684 |
Parallel image processing apparatus using edge detection layer |
Sep. 1, 1992 |
| 5142591 |
High resolution camera with hardware data compaction |
Aug. 25, 1992 |
| 5140646 |
Pattern detector for detecting a reference mark or marks formed on a printed circuit board |
Aug. 18, 1992 |
| 5137362 |
Automatic package inspection method |
Aug. 11, 1992 |
| 5131058 |
Method for obtaining output-adjusted color separations |
Jul. 14, 1992 |
| 5119439 |
Method of and apparatus for extracting image contour data |
Jun. 2, 1992 |
| 5119440 |
Method and apparatus for preparing picture masks and for digitizing line edges |
Jun. 2, 1992 |
| 5115476 |
Edge finding method and apparatus |
May. 19, 1992 |
| 5115477 |
Image recognition edge detection method and system |
May. 19, 1992 |
| 5105472 |
Graphic reproduction method |
Apr. 14, 1992 |
| 5103488 |
Method of and device for moving image contour recognition |
Apr. 7, 1992 |
| 5093869 |
Pattern recognition apparatus utilizing area linking and region growth techniques |
Mar. 3, 1992 |
| 5093870 |
Smoothing method and apparatus for smoothing contour of character |
Mar. 3, 1992 |
| 5093871 |
Method and apparatus for effecting background suppression of image data |
Mar. 3, 1992 |
| 5091963 |
Method and apparatus for inspecting surfaces for contrast variations |
Feb. 25, 1992 |
| 5086478 |
Finding fiducials on printed circuit boards to sub pixel accuracy |
Feb. 4, 1992 |
| 5081689 |
Apparatus and method for extracting edges and lines |
Jan. 14, 1992 |
| 5073960 |
Image processing method using improved Bresenham algorithm in creating an outline of a figure to be painted and apparatus adopting the method |
Dec. 17, 1991 |
| 5072384 |
Method and system for automated computerized analysis of sizes of hearts and lungs in digital chest radiographs |
Dec. 10, 1991 |
| 5060281 |
Method and apparatus for detecting disparity of cyclic length of printed patterns |
Oct. 22, 1991 |
| 5058181 |
Hardware and software image processing system |
Oct. 15, 1991 |
| 5052045 |
Confirmed boundary pattern matching |
Sep. 24, 1991 |
| 5050097 |
Boundary detector and graphic processing system incorporating the same |
Sep. 17, 1991 |
| 5046115 |
Method of processing image data on crack |
Sep. 3, 1991 |
| 5041961 |
Two dimensional generating system for the geometry of a model using artificial vision |
Aug. 20, 1991 |
| 5040229 |
Contour feature-based method for identification and segmentation of touching characters |
Aug. 13, 1991 |
| 5040231 |
Vertical vector pattern recognition algorithm |
Aug. 13, 1991 |
| 5033096 |
Non-contact determination of the position of a rectilinear feature of an article |
Jul. 16, 1991 |
| 5031226 |
Arrangement for determining contrasting objects in a picture |
Jul. 9, 1991 |
| 5031227 |
Edge enhancement and smoothing in digital images |
Jul. 9, 1991 |
| 5029224 |
Marked region recognition apparatus |
Jul. 2, 1991 |
| 5029227 |
Image processing apparatus |
Jul. 2, 1991 |
| 5027422 |
Confirmed boundary pattern matching |
Jun. 25, 1991 |
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