05172419 is referenced by 47 patents and cites 11 patents.

A system and method for processing images viewed on radiographic film. Such images include mammograms, CAT scans, or other standard x-ray type images. The system includes a scanning laser film digitizer for reading the optical density of pixels in an original film image; a controller which analyzes the image data based on input film type and scanned optical density in order to compute an exposure correction factor which enhances the original image quality; and a laser film writer which creates a new copy of the original data in the improved form. The system is capable of writing several proportional non-overlapping images on a single sheet of film. This feature facilitates diagnostic evaluation of related subject matter such as multiple angle views of an injury, simultaneous views of right and left side mammograms, or several CAT scans on a single exposure. The system uses a look-up table to store and access optical density vs. exposure characteristics for several types of radiographic film. This exposure data is used in image processing functions. The look-up table information is also used in the copy writing procedure to insure the correct exposure range is used for a given film type.

Title
Medical image processing system
Application Number
7/665401
Publication Number
5172419
Application Date
March 5, 1991
Publication Date
December 15, 1992
Inventor
Bala S Manian
Saratoga
CA, US
Agent
Schneck & McHugh
Assignee
Lumisys
CA, US
IPC
G06K 9/00
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