DEVICE FOR THE DYNAMIC ADJUSTMENT OF A BLACK/WHITE DISCRIMINATION THRESHOLD FOR THE PROCESSING OF IMAGES CONTAINING GREY VALUES
Patent №
US 4,501,016
Granted
1985-02-19
Filed 1982
Owner
U.S. PHILIPS CORPORATION, A CORP OF DE.
Lab
—
AI components
3
ml · vision · hardware
Assignment
Recorded
Dataset
AIPD
2023_r1 edition
Application
06443768
A device for binarizing an image consisting of grey values by means of a dynamically adjusted black/white discrimination threshold comprises: PA1 a. a generator (74) for determining a discrimination threshold each time for a first local sub-set of pixels; PA1 b. an edge detector (90) for determining a local edge between darker and lighter pixels from a second local sub-set of pixels, associated with a first local sub-set of pixels, in order to form an accept signal, and otherwise a reject signal; and PA1 c. a discriminator (64) for presenting, on the basis of a grey value and the relevant discrimination threshold, alternatively a black or a white signal.
AI classification
Ownership
U.S. PHILIPS CORPORATION, A CORP OF DE.
assignment · 40840579
Assignors
PERSOON, ERIC H. J., ABEYSEKERA, RATNAYAKE M. S. S.
On an employer assignment, the assignors are typically the inventors.