Image analysis – Histogram processing – For setting a threshold
Patent
1986-02-21
1988-03-15
Boudreau, Leo H.
Image analysis
Histogram processing
For setting a threshold
382 41, 358104, 358 93, 364522, 364518, G06K 900, H04N 1387
Patent
active
047318643
ABSTRACT:
A camera field-of-view is mapped with full depth-of-focus into electronic memory. Data concerning image intensities at selected points in image space are stored, along with data concerning the distances between the camera and these points in image space. Images with any focus and depth-of-focus can be generated by scanning the electronic memory during a reading thereof and convolving the data concerning image intensity with an adjustable-bandwidth low-pass spatial filter. The bandwidth of that filter is adjusted dependent on the data concerning distances between camera and points in image space. This image storage and image retrieval procedure conserves the size of electronic memory required to store and retrieve images with any focus and depth-of-focus.
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Boudreau Leo H.
Brim Steven W.
Herrmann Eric P.
Rasmussen Paul J.
RCA Corporation
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