The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 16, 1983
Filed:
Mar. 12, 1982
Philip G Powell, Pinner, GB;
Eastman Kodak Company, Rochester, NY (US);
Abstract
An electronic image processing system, using image dissection by solid state devices or by scanning and sampling, applies a signal representing a succession of signal values on an array of picture elements to complementary high and low pass electronic filters to produce an output signal in which a desired image feature is enhanced and noise is suppressed. The high pass filter, e.g. FIG. 1, comprises at least one matched pair of signal weighting gradient detectors, e.g. FIGS. 3 and 5, arranged back-to-back to detect a brightness transition 10, as shown in FIGS. 4 and 6, and having their outputs cored independently. Each pair will be sensitive to gradients in a particular direction in the array, e.g. horizontal, vertical or diagonal. The system is applicable to two-dimensional spatial arrays, three dimensional spatial arrays, and also to the temporal dimension, e.g. succession of moving pictures.