Image analysis – Histogram processing – For setting a threshold
Patent
1990-05-31
1993-01-12
Razavi, Michael T.
Image analysis
Histogram processing
For setting a threshold
382 1, 382 17, 250255, G06K 900
Patent
active
051795981
ABSTRACT:
A method for highlighting particular features of an image photographically captured and stored in a computer is disclosed. The method essentially comprises capturing an image of an object using a video or similar electronic camera and storing the image as a series of numbers in the memory of a computer. The computer contains an image capture board and a graphics board so as to acquire and display the image on a monitor. The operator enlarges a region of the image of interest so as to display the individual pixels comprising the image. The operator, through the computer, selects individual pixels from the image to comprise a test set of pixels to be used to discriminate against all of the pixels comprising the image. Once the test set is defined, the eigenvectors and eigenvalues of the test set are calculated to define an ellipsoid encompassing substantially all of the test set data points. In essence, the ellipsoid defines an envelope in color space. The image is scanned using the test set to either accept or reject each of the pixels comprising the image. The accepted or rejected pixels are assigned a value to be used in producing a second display which highlights the desired pixels. The operator may alter the test set by adding more pixels or change the dimensions of the ellipsoid to produce a different display. Certain operations and calculations may be performed on the second image highlighting characteristics of the first image produced of object.
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patent: 4742233 (1988-05-01), Kuyel
patent: 4791589 (1988-12-01), Blazo et al.
patent: 4876457 (1989-10-01), Bose
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Burleigh Kathryn
DiFoggio Rocco
Jung Yon
Razavi Michael T.
Thigpen E. Eugene
Western Atlas International Inc.
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